/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/sum_invariant.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-2abb09bbbae98a04ae2fcc735832bfdba44f6fbc-2abb09b [2021-06-05 20:33:38,892 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-06-05 20:33:38,893 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-06-05 20:33:38,910 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-06-05 20:33:38,949 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf [2021-06-05 20:33:38,964 INFO L113 SettingsManager]: Loading preferences was successful [2021-06-05 20:33:38,965 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-06-05 20:33:38,965 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-06-05 20:33:38,965 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-06-05 20:33:38,965 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-06-05 20:33:38,966 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-06-05 20:33:38,966 INFO L138 SettingsManager]: * Use SBE=true [2021-06-05 20:33:38,966 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-06-05 20:33:38,966 INFO L138 SettingsManager]: * sizeof long=4 [2021-06-05 20:33:38,966 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-06-05 20:33:38,966 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-06-05 20:33:38,966 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-06-05 20:33:38,966 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-06-05 20:33:38,966 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-06-05 20:33:38,966 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-06-05 20:33:38,966 INFO L138 SettingsManager]: * sizeof long double=12 [2021-06-05 20:33:38,967 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-06-05 20:33:38,967 INFO L138 SettingsManager]: * Use constant arrays=true [2021-06-05 20:33:38,967 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-06-05 20:33:38,967 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-06-05 20:33:38,967 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-06-05 20:33:38,967 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-06-05 20:33:38,967 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-06-05 20:33:38,967 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-05 20:33:38,967 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-06-05 20:33:38,967 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-06-05 20:33:38,967 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-06-05 20:33:38,968 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-06-05 20:33:38,968 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-06-05 20:33:38,970 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-06-05 20:33:38,970 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-06-05 20:33:38,970 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-06-05 20:33:39,192 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-06-05 20:33:39,206 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-06-05 20:33:39,208 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-06-05 20:33:39,210 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-06-05 20:33:39,211 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-06-05 20:33:39,212 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/sum_invariant.bpl [2021-06-05 20:33:39,212 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/sum_invariant.bpl' [2021-06-05 20:33:39,237 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-06-05 20:33:39,238 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-06-05 20:33:39,239 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-06-05 20:33:39,239 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-06-05 20:33:39,239 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-06-05 20:33:39,248 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "sum_invariant.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 08:33:39" (1/1) ... [2021-06-05 20:33:39,253 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "sum_invariant.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 08:33:39" (1/1) ... [2021-06-05 20:33:39,259 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-06-05 20:33:39,260 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-06-05 20:33:39,260 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-06-05 20:33:39,261 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-06-05 20:33:39,266 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "sum_invariant.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 08:33:39" (1/1) ... [2021-06-05 20:33:39,266 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "sum_invariant.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 08:33:39" (1/1) ... [2021-06-05 20:33:39,266 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "sum_invariant.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 08:33:39" (1/1) ... [2021-06-05 20:33:39,266 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "sum_invariant.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 08:33:39" (1/1) ... [2021-06-05 20:33:39,267 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "sum_invariant.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 08:33:39" (1/1) ... [2021-06-05 20:33:39,268 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "sum_invariant.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 08:33:39" (1/1) ... [2021-06-05 20:33:39,268 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "sum_invariant.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 08:33:39" (1/1) ... [2021-06-05 20:33:39,269 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-06-05 20:33:39,271 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-06-05 20:33:39,271 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-06-05 20:33:39,271 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-06-05 20:33:39,273 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "sum_invariant.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 08:33:39" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-05 20:33:39,333 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-06-05 20:33:39,334 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-06-05 20:33:39,334 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-06-05 20:33:39,334 INFO L124 BoogieDeclarations]: Specification and implementation of procedure Thread given in one single declaration [2021-06-05 20:33:39,334 INFO L130 BoogieDeclarations]: Found specification of procedure Thread [2021-06-05 20:33:39,334 INFO L138 BoogieDeclarations]: Found implementation of procedure Thread [2021-06-05 20:33:39,335 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-06-05 20:33:39,423 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-06-05 20:33:39,423 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-06-05 20:33:39,424 INFO L202 PluginConnector]: Adding new model sum_invariant.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.06 08:33:39 BoogieIcfgContainer [2021-06-05 20:33:39,424 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-06-05 20:33:39,425 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-06-05 20:33:39,425 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-06-05 20:33:39,427 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-06-05 20:33:39,427 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "sum_invariant.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 08:33:39" (1/2) ... [2021-06-05 20:33:39,428 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@fab54dc and model type sum_invariant.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.06 08:33:39, skipping insertion in model container [2021-06-05 20:33:39,428 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "sum_invariant.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.06 08:33:39" (2/2) ... [2021-06-05 20:33:39,429 INFO L111 eAbstractionObserver]: Analyzing ICFG sum_invariant.bpl [2021-06-05 20:33:39,432 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-06-05 20:33:39,432 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-06-05 20:33:39,432 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-06-05 20:33:39,432 INFO L471 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-06-05 20:33:39,446 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork1_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 20:33:39,447 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork1_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 20:33:39,447 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork1_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 20:33:39,447 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork1_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 20:33:39,447 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork1_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 20:33:39,447 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork1_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 20:33:39,448 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 20:33:39,448 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 20:33:39,448 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 20:33:39,448 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 20:33:39,448 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 20:33:39,448 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 20:33:39,449 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork3_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 20:33:39,449 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork3_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 20:33:39,449 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork3_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 20:33:39,449 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork3_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 20:33:39,449 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork3_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 20:33:39,450 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork3_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 20:33:39,450 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork2_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 20:33:39,450 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork2_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 20:33:39,450 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork2_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 20:33:39,450 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork2_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 20:33:39,450 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork2_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 20:33:39,451 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork2_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 20:33:39,452 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 20:33:39,454 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork1_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 20:33:39,456 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork2_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 20:33:39,457 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork3_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 20:33:39,471 INFO L149 ThreadInstanceAdder]: Constructed 16 joinOtherThreadTransitions. [2021-06-05 20:33:39,485 INFO L255 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2021-06-05 20:33:39,502 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-05 20:33:39,502 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-05 20:33:39,502 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-05 20:33:39,502 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-05 20:33:39,502 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-05 20:33:39,502 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-05 20:33:39,502 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-05 20:33:39,502 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.start======== [2021-06-05 20:33:39,510 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 45 places, 44 transitions, 156 flow [2021-06-05 20:33:39,652 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 1456 states, 1454 states have (on average 3.3177441540577717) internal successors, (4824), 1455 states have internal predecessors, (4824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:33:39,656 INFO L276 IsEmpty]: Start isEmpty. Operand has 1456 states, 1454 states have (on average 3.3177441540577717) internal successors, (4824), 1455 states have internal predecessors, (4824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:33:39,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:33:39,675 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:33:39,675 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:33:39,676 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:33:39,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:33:39,679 INFO L82 PathProgramCache]: Analyzing trace with hash -725316694, now seen corresponding path program 1 times [2021-06-05 20:33:39,684 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:33:39,684 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [63306978] [2021-06-05 20:33:39,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:33:39,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:33:39,789 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:33:39,789 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:33:39,790 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [63306978] [2021-06-05 20:33:39,791 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [63306978] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:33:39,791 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:33:39,791 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-05 20:33:39,792 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2033716982] [2021-06-05 20:33:39,794 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-05 20:33:39,795 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:33:39,806 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-05 20:33:39,807 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-05 20:33:39,811 INFO L87 Difference]: Start difference. First operand has 1456 states, 1454 states have (on average 3.3177441540577717) internal successors, (4824), 1455 states have internal predecessors, (4824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:33:39,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:33:39,856 INFO L93 Difference]: Finished difference Result 1331 states and 4324 transitions. [2021-06-05 20:33:39,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-05 20:33:39,858 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:33:39,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:33:39,882 INFO L225 Difference]: With dead ends: 1331 [2021-06-05 20:33:39,882 INFO L226 Difference]: Without dead ends: 1329 [2021-06-05 20:33:39,884 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 15.4ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-05 20:33:39,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1329 states. [2021-06-05 20:33:39,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1329 to 1329. [2021-06-05 20:33:39,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1329 states, 1328 states have (on average 3.2545180722891565) internal successors, (4322), 1328 states have internal predecessors, (4322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:33:39,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1329 states to 1329 states and 4322 transitions. [2021-06-05 20:33:39,985 INFO L78 Accepts]: Start accepts. Automaton has 1329 states and 4322 transitions. Word has length 26 [2021-06-05 20:33:39,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:33:39,985 INFO L482 AbstractCegarLoop]: Abstraction has 1329 states and 4322 transitions. [2021-06-05 20:33:39,985 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:33:39,985 INFO L276 IsEmpty]: Start isEmpty. Operand 1329 states and 4322 transitions. [2021-06-05 20:33:39,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:33:39,990 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:33:39,990 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:33:39,990 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-06-05 20:33:39,990 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:33:39,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:33:39,993 INFO L82 PathProgramCache]: Analyzing trace with hash 992295916, now seen corresponding path program 1 times [2021-06-05 20:33:39,993 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:33:39,994 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1689381372] [2021-06-05 20:33:39,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:33:40,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:33:40,030 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:33:40,031 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:33:40,031 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1689381372] [2021-06-05 20:33:40,031 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1689381372] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:33:40,031 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:33:40,031 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-05 20:33:40,031 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [736355035] [2021-06-05 20:33:40,032 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-05 20:33:40,032 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:33:40,033 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-05 20:33:40,033 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-05 20:33:40,033 INFO L87 Difference]: Start difference. First operand 1329 states and 4322 transitions. Second operand has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:33:40,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:33:40,046 INFO L93 Difference]: Finished difference Result 1114 states and 3592 transitions. [2021-06-05 20:33:40,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-05 20:33:40,046 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:33:40,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:33:40,051 INFO L225 Difference]: With dead ends: 1114 [2021-06-05 20:33:40,051 INFO L226 Difference]: Without dead ends: 1114 [2021-06-05 20:33:40,052 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.5ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-05 20:33:40,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1114 states. [2021-06-05 20:33:40,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1114 to 1114. [2021-06-05 20:33:40,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1114 states, 1113 states have (on average 3.2273135669362083) internal successors, (3592), 1113 states have internal predecessors, (3592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:33:40,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1114 states to 1114 states and 3592 transitions. [2021-06-05 20:33:40,085 INFO L78 Accepts]: Start accepts. Automaton has 1114 states and 3592 transitions. Word has length 26 [2021-06-05 20:33:40,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:33:40,085 INFO L482 AbstractCegarLoop]: Abstraction has 1114 states and 3592 transitions. [2021-06-05 20:33:40,085 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:33:40,085 INFO L276 IsEmpty]: Start isEmpty. Operand 1114 states and 3592 transitions. [2021-06-05 20:33:40,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:33:40,088 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:33:40,088 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:33:40,088 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-06-05 20:33:40,089 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:33:40,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:33:40,089 INFO L82 PathProgramCache]: Analyzing trace with hash 1308189016, now seen corresponding path program 1 times [2021-06-05 20:33:40,089 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:33:40,089 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1158847025] [2021-06-05 20:33:40,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:33:40,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:33:40,204 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:33:40,204 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:33:40,205 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1158847025] [2021-06-05 20:33:40,205 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1158847025] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:33:40,206 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:33:40,206 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-06-05 20:33:40,206 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1626795249] [2021-06-05 20:33:40,206 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-05 20:33:40,207 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:33:40,208 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-05 20:33:40,208 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-06-05 20:33:40,208 INFO L87 Difference]: Start difference. First operand 1114 states and 3592 transitions. Second operand has 7 states, 6 states have (on average 4.333333333333333) internal successors, (26), 6 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:33:40,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:33:40,360 INFO L93 Difference]: Finished difference Result 1876 states and 5924 transitions. [2021-06-05 20:33:40,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-06-05 20:33:40,360 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 4.333333333333333) internal successors, (26), 6 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:33:40,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:33:40,367 INFO L225 Difference]: With dead ends: 1876 [2021-06-05 20:33:40,367 INFO L226 Difference]: Without dead ends: 1614 [2021-06-05 20:33:40,368 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 47.8ms TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-06-05 20:33:40,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1614 states. [2021-06-05 20:33:40,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1614 to 1614. [2021-06-05 20:33:40,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1614 states, 1613 states have (on average 3.135771853688779) internal successors, (5058), 1613 states have internal predecessors, (5058), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:33:40,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1614 states to 1614 states and 5058 transitions. [2021-06-05 20:33:40,407 INFO L78 Accepts]: Start accepts. Automaton has 1614 states and 5058 transitions. Word has length 26 [2021-06-05 20:33:40,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:33:40,408 INFO L482 AbstractCegarLoop]: Abstraction has 1614 states and 5058 transitions. [2021-06-05 20:33:40,408 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 6 states have (on average 4.333333333333333) internal successors, (26), 6 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:33:40,408 INFO L276 IsEmpty]: Start isEmpty. Operand 1614 states and 5058 transitions. [2021-06-05 20:33:40,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:33:40,412 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:33:40,412 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:33:40,412 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-06-05 20:33:40,412 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:33:40,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:33:40,413 INFO L82 PathProgramCache]: Analyzing trace with hash 448604022, now seen corresponding path program 2 times [2021-06-05 20:33:40,413 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:33:40,413 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1602891807] [2021-06-05 20:33:40,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:33:40,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:33:40,525 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:33:40,525 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:33:40,525 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1602891807] [2021-06-05 20:33:40,525 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1602891807] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:33:40,525 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:33:40,525 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-05 20:33:40,525 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2006479241] [2021-06-05 20:33:40,526 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:33:40,526 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:33:40,526 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:33:40,526 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:33:40,527 INFO L87 Difference]: Start difference. First operand 1614 states and 5058 transitions. Second operand has 8 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 7 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:33:40,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:33:40,664 INFO L93 Difference]: Finished difference Result 1887 states and 5832 transitions. [2021-06-05 20:33:40,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:33:40,665 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 7 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:33:40,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:33:40,671 INFO L225 Difference]: With dead ends: 1887 [2021-06-05 20:33:40,671 INFO L226 Difference]: Without dead ends: 1628 [2021-06-05 20:33:40,672 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 42.0ms TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:33:40,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1628 states. [2021-06-05 20:33:40,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1628 to 1508. [2021-06-05 20:33:40,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1508 states, 1507 states have (on average 3.1360318513603187) internal successors, (4726), 1507 states have internal predecessors, (4726), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:33:40,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1508 states to 1508 states and 4726 transitions. [2021-06-05 20:33:40,713 INFO L78 Accepts]: Start accepts. Automaton has 1508 states and 4726 transitions. Word has length 26 [2021-06-05 20:33:40,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:33:40,714 INFO L482 AbstractCegarLoop]: Abstraction has 1508 states and 4726 transitions. [2021-06-05 20:33:40,714 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 7 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:33:40,714 INFO L276 IsEmpty]: Start isEmpty. Operand 1508 states and 4726 transitions. [2021-06-05 20:33:40,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:33:40,717 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:33:40,718 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:33:40,718 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-06-05 20:33:40,718 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:33:40,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:33:40,719 INFO L82 PathProgramCache]: Analyzing trace with hash -601874730, now seen corresponding path program 3 times [2021-06-05 20:33:40,719 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:33:40,719 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [528827327] [2021-06-05 20:33:40,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:33:40,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:33:40,808 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:33:40,808 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:33:40,808 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [528827327] [2021-06-05 20:33:40,808 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [528827327] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:33:40,809 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:33:40,809 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-05 20:33:40,809 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [108764017] [2021-06-05 20:33:40,809 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:33:40,809 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:33:40,809 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:33:40,810 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:33:40,810 INFO L87 Difference]: Start difference. First operand 1508 states and 4726 transitions. Second operand has 8 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 7 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:33:40,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:33:40,930 INFO L93 Difference]: Finished difference Result 1901 states and 5814 transitions. [2021-06-05 20:33:40,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:33:40,931 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 7 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:33:40,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:33:40,937 INFO L225 Difference]: With dead ends: 1901 [2021-06-05 20:33:40,937 INFO L226 Difference]: Without dead ends: 1646 [2021-06-05 20:33:40,937 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 39.3ms TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:33:40,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1646 states. [2021-06-05 20:33:40,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1646 to 1458. [2021-06-05 20:33:40,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1458 states, 1457 states have (on average 3.1256005490734386) internal successors, (4554), 1457 states have internal predecessors, (4554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:33:40,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1458 states to 1458 states and 4554 transitions. [2021-06-05 20:33:40,966 INFO L78 Accepts]: Start accepts. Automaton has 1458 states and 4554 transitions. Word has length 26 [2021-06-05 20:33:40,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:33:40,966 INFO L482 AbstractCegarLoop]: Abstraction has 1458 states and 4554 transitions. [2021-06-05 20:33:40,966 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 7 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:33:40,966 INFO L276 IsEmpty]: Start isEmpty. Operand 1458 states and 4554 transitions. [2021-06-05 20:33:40,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:33:40,969 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:33:40,969 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:33:40,969 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-06-05 20:33:40,969 INFO L430 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:33:40,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:33:40,969 INFO L82 PathProgramCache]: Analyzing trace with hash -1461459724, now seen corresponding path program 4 times [2021-06-05 20:33:40,970 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:33:40,970 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1292729215] [2021-06-05 20:33:40,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:33:40,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:33:41,072 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:33:41,072 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:33:41,072 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1292729215] [2021-06-05 20:33:41,073 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1292729215] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:33:41,075 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:33:41,075 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:33:41,075 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [443390913] [2021-06-05 20:33:41,075 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-05 20:33:41,077 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:33:41,078 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-05 20:33:41,079 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:33:41,079 INFO L87 Difference]: Start difference. First operand 1458 states and 4554 transitions. Second operand has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:33:41,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:33:41,222 INFO L93 Difference]: Finished difference Result 1678 states and 5178 transitions. [2021-06-05 20:33:41,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-05 20:33:41,222 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:33:41,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:33:41,228 INFO L225 Difference]: With dead ends: 1678 [2021-06-05 20:33:41,228 INFO L226 Difference]: Without dead ends: 1484 [2021-06-05 20:33:41,228 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 48.6ms TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:33:41,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1484 states. [2021-06-05 20:33:41,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1484 to 1406. [2021-06-05 20:33:41,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1406 states, 1405 states have (on average 3.1302491103202845) internal successors, (4398), 1405 states have internal predecessors, (4398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:33:41,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1406 states to 1406 states and 4398 transitions. [2021-06-05 20:33:41,254 INFO L78 Accepts]: Start accepts. Automaton has 1406 states and 4398 transitions. Word has length 26 [2021-06-05 20:33:41,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:33:41,254 INFO L482 AbstractCegarLoop]: Abstraction has 1406 states and 4398 transitions. [2021-06-05 20:33:41,254 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:33:41,254 INFO L276 IsEmpty]: Start isEmpty. Operand 1406 states and 4398 transitions. [2021-06-05 20:33:41,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:33:41,257 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:33:41,257 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:33:41,257 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-06-05 20:33:41,257 INFO L430 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:33:41,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:33:41,257 INFO L82 PathProgramCache]: Analyzing trace with hash -47437838, now seen corresponding path program 5 times [2021-06-05 20:33:41,258 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:33:41,258 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [498751037] [2021-06-05 20:33:41,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:33:41,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:33:41,326 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:33:41,326 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:33:41,326 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [498751037] [2021-06-05 20:33:41,326 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [498751037] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:33:41,326 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:33:41,326 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-05 20:33:41,326 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [444768271] [2021-06-05 20:33:41,327 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:33:41,327 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:33:41,327 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:33:41,327 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:33:41,327 INFO L87 Difference]: Start difference. First operand 1406 states and 4398 transitions. Second operand has 8 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 7 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:33:41,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:33:41,452 INFO L93 Difference]: Finished difference Result 1788 states and 5480 transitions. [2021-06-05 20:33:41,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:33:41,452 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 7 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:33:41,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:33:41,458 INFO L225 Difference]: With dead ends: 1788 [2021-06-05 20:33:41,458 INFO L226 Difference]: Without dead ends: 1647 [2021-06-05 20:33:41,458 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 36.8ms TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:33:41,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1647 states. [2021-06-05 20:33:41,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1647 to 1463. [2021-06-05 20:33:41,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1463 states, 1462 states have (on average 3.1299589603283176) internal successors, (4576), 1462 states have internal predecessors, (4576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:33:41,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1463 states to 1463 states and 4576 transitions. [2021-06-05 20:33:41,486 INFO L78 Accepts]: Start accepts. Automaton has 1463 states and 4576 transitions. Word has length 26 [2021-06-05 20:33:41,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:33:41,486 INFO L482 AbstractCegarLoop]: Abstraction has 1463 states and 4576 transitions. [2021-06-05 20:33:41,486 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 7 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:33:41,486 INFO L276 IsEmpty]: Start isEmpty. Operand 1463 states and 4576 transitions. [2021-06-05 20:33:41,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:33:41,489 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:33:41,489 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:33:41,489 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-06-05 20:33:41,489 INFO L430 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:33:41,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:33:41,489 INFO L82 PathProgramCache]: Analyzing trace with hash 1711235668, now seen corresponding path program 6 times [2021-06-05 20:33:41,490 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:33:41,490 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [259581194] [2021-06-05 20:33:41,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:33:41,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:33:41,551 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:33:41,551 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:33:41,552 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [259581194] [2021-06-05 20:33:41,552 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [259581194] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:33:41,552 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:33:41,552 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:33:41,552 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [388792015] [2021-06-05 20:33:41,552 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-05 20:33:41,552 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:33:41,552 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-05 20:33:41,553 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:33:41,553 INFO L87 Difference]: Start difference. First operand 1463 states and 4576 transitions. Second operand has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:33:41,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:33:41,706 INFO L93 Difference]: Finished difference Result 1778 states and 5460 transitions. [2021-06-05 20:33:41,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-05 20:33:41,706 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:33:41,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:33:41,712 INFO L225 Difference]: With dead ends: 1778 [2021-06-05 20:33:41,712 INFO L226 Difference]: Without dead ends: 1649 [2021-06-05 20:33:41,713 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 42.8ms TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:33:41,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1649 states. [2021-06-05 20:33:41,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1649 to 1488. [2021-06-05 20:33:41,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1488 states, 1487 states have (on average 3.129791526563551) internal successors, (4654), 1487 states have internal predecessors, (4654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:33:41,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1488 states to 1488 states and 4654 transitions. [2021-06-05 20:33:41,752 INFO L78 Accepts]: Start accepts. Automaton has 1488 states and 4654 transitions. Word has length 26 [2021-06-05 20:33:41,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:33:41,753 INFO L482 AbstractCegarLoop]: Abstraction has 1488 states and 4654 transitions. [2021-06-05 20:33:41,754 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:33:41,754 INFO L276 IsEmpty]: Start isEmpty. Operand 1488 states and 4654 transitions. [2021-06-05 20:33:41,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:33:41,757 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:33:41,757 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:33:41,757 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-06-05 20:33:41,757 INFO L430 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:33:41,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:33:41,758 INFO L82 PathProgramCache]: Analyzing trace with hash -1714287020, now seen corresponding path program 7 times [2021-06-05 20:33:41,758 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:33:41,758 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [284715069] [2021-06-05 20:33:41,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:33:41,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:33:41,841 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:33:41,841 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:33:41,841 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [284715069] [2021-06-05 20:33:41,841 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [284715069] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:33:41,841 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:33:41,841 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:33:41,841 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1442777960] [2021-06-05 20:33:41,841 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-05 20:33:41,842 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:33:41,842 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-05 20:33:41,842 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:33:41,842 INFO L87 Difference]: Start difference. First operand 1488 states and 4654 transitions. Second operand has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:33:41,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:33:41,983 INFO L93 Difference]: Finished difference Result 1806 states and 5565 transitions. [2021-06-05 20:33:41,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-05 20:33:41,984 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:33:41,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:33:41,990 INFO L225 Difference]: With dead ends: 1806 [2021-06-05 20:33:41,990 INFO L226 Difference]: Without dead ends: 1647 [2021-06-05 20:33:41,990 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 42.5ms TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:33:41,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1647 states. [2021-06-05 20:33:42,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1647 to 1509. [2021-06-05 20:33:42,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1509 states, 1508 states have (on average 3.126657824933687) internal successors, (4715), 1508 states have internal predecessors, (4715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:33:42,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1509 states to 1509 states and 4715 transitions. [2021-06-05 20:33:42,017 INFO L78 Accepts]: Start accepts. Automaton has 1509 states and 4715 transitions. Word has length 26 [2021-06-05 20:33:42,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:33:42,018 INFO L482 AbstractCegarLoop]: Abstraction has 1509 states and 4715 transitions. [2021-06-05 20:33:42,018 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:33:42,018 INFO L276 IsEmpty]: Start isEmpty. Operand 1509 states and 4715 transitions. [2021-06-05 20:33:42,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:33:42,020 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:33:42,021 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:33:42,021 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-06-05 20:33:42,021 INFO L430 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:33:42,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:33:42,021 INFO L82 PathProgramCache]: Analyzing trace with hash 1111969046, now seen corresponding path program 8 times [2021-06-05 20:33:42,021 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:33:42,021 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [882198985] [2021-06-05 20:33:42,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:33:42,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:33:42,080 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:33:42,080 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:33:42,080 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [882198985] [2021-06-05 20:33:42,081 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [882198985] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:33:42,081 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:33:42,081 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:33:42,081 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1325163246] [2021-06-05 20:33:42,081 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-05 20:33:42,081 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:33:42,081 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-05 20:33:42,081 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:33:42,082 INFO L87 Difference]: Start difference. First operand 1509 states and 4715 transitions. Second operand has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:33:42,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:33:42,223 INFO L93 Difference]: Finished difference Result 1852 states and 5672 transitions. [2021-06-05 20:33:42,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-05 20:33:42,224 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:33:42,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:33:42,231 INFO L225 Difference]: With dead ends: 1852 [2021-06-05 20:33:42,231 INFO L226 Difference]: Without dead ends: 1713 [2021-06-05 20:33:42,231 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 43.0ms TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:33:42,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1713 states. [2021-06-05 20:33:42,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1713 to 1499. [2021-06-05 20:33:42,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1499 states, 1498 states have (on average 3.1275033377837116) internal successors, (4685), 1498 states have internal predecessors, (4685), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:33:42,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1499 states to 1499 states and 4685 transitions. [2021-06-05 20:33:42,259 INFO L78 Accepts]: Start accepts. Automaton has 1499 states and 4685 transitions. Word has length 26 [2021-06-05 20:33:42,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:33:42,259 INFO L482 AbstractCegarLoop]: Abstraction has 1499 states and 4685 transitions. [2021-06-05 20:33:42,259 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:33:42,259 INFO L276 IsEmpty]: Start isEmpty. Operand 1499 states and 4685 transitions. [2021-06-05 20:33:42,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:33:42,262 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:33:42,262 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:33:42,262 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-06-05 20:33:42,262 INFO L430 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:33:42,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:33:42,263 INFO L82 PathProgramCache]: Analyzing trace with hash 1102566680, now seen corresponding path program 9 times [2021-06-05 20:33:42,263 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:33:42,263 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [754215541] [2021-06-05 20:33:42,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:33:42,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:33:42,313 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:33:42,313 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:33:42,314 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [754215541] [2021-06-05 20:33:42,314 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [754215541] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:33:42,314 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:33:42,314 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-05 20:33:42,314 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [175955628] [2021-06-05 20:33:42,314 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:33:42,314 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:33:42,314 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:33:42,323 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:33:42,323 INFO L87 Difference]: Start difference. First operand 1499 states and 4685 transitions. Second operand has 8 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 7 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:33:42,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:33:42,439 INFO L93 Difference]: Finished difference Result 1849 states and 5664 transitions. [2021-06-05 20:33:42,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:33:42,440 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 7 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:33:42,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:33:42,451 INFO L225 Difference]: With dead ends: 1849 [2021-06-05 20:33:42,451 INFO L226 Difference]: Without dead ends: 1708 [2021-06-05 20:33:42,451 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 32.5ms TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:33:42,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1708 states. [2021-06-05 20:33:42,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1708 to 1525. [2021-06-05 20:33:42,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1525 states, 1524 states have (on average 3.1266404199475066) internal successors, (4765), 1524 states have internal predecessors, (4765), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:33:42,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1525 states to 1525 states and 4765 transitions. [2021-06-05 20:33:42,490 INFO L78 Accepts]: Start accepts. Automaton has 1525 states and 4765 transitions. Word has length 26 [2021-06-05 20:33:42,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:33:42,490 INFO L482 AbstractCegarLoop]: Abstraction has 1525 states and 4765 transitions. [2021-06-05 20:33:42,490 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 7 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:33:42,490 INFO L276 IsEmpty]: Start isEmpty. Operand 1525 states and 4765 transitions. [2021-06-05 20:33:42,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:33:42,493 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:33:42,493 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:33:42,493 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-06-05 20:33:42,493 INFO L430 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:33:42,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:33:42,493 INFO L82 PathProgramCache]: Analyzing trace with hash 1972011288, now seen corresponding path program 10 times [2021-06-05 20:33:42,494 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:33:42,494 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [440306082] [2021-06-05 20:33:42,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:33:42,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:33:42,599 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:33:42,599 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:33:42,599 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [440306082] [2021-06-05 20:33:42,599 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [440306082] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:33:42,599 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:33:42,599 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:33:42,600 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [302324633] [2021-06-05 20:33:42,600 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-05 20:33:42,600 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:33:42,600 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-05 20:33:42,600 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:33:42,600 INFO L87 Difference]: Start difference. First operand 1525 states and 4765 transitions. Second operand has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:33:42,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:33:42,734 INFO L93 Difference]: Finished difference Result 1932 states and 5906 transitions. [2021-06-05 20:33:42,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-05 20:33:42,735 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:33:42,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:33:42,738 INFO L225 Difference]: With dead ends: 1932 [2021-06-05 20:33:42,738 INFO L226 Difference]: Without dead ends: 1665 [2021-06-05 20:33:42,739 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 56.8ms TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:33:42,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1665 states. [2021-06-05 20:33:42,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1665 to 1415. [2021-06-05 20:33:42,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1415 states, 1414 states have (on average 3.0912305516265914) internal successors, (4371), 1414 states have internal predecessors, (4371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:33:42,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1415 states to 1415 states and 4371 transitions. [2021-06-05 20:33:42,766 INFO L78 Accepts]: Start accepts. Automaton has 1415 states and 4371 transitions. Word has length 26 [2021-06-05 20:33:42,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:33:42,766 INFO L482 AbstractCegarLoop]: Abstraction has 1415 states and 4371 transitions. [2021-06-05 20:33:42,766 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:33:42,766 INFO L276 IsEmpty]: Start isEmpty. Operand 1415 states and 4371 transitions. [2021-06-05 20:33:42,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:33:42,768 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:33:42,768 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:33:42,768 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-06-05 20:33:42,768 INFO L430 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:33:42,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:33:42,769 INFO L82 PathProgramCache]: Analyzing trace with hash -615174090, now seen corresponding path program 11 times [2021-06-05 20:33:42,769 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:33:42,769 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1820013884] [2021-06-05 20:33:42,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:33:42,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:33:42,836 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:33:42,837 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:33:42,837 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1820013884] [2021-06-05 20:33:42,837 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1820013884] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:33:42,837 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:33:42,837 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:33:42,837 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [778180974] [2021-06-05 20:33:42,837 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-05 20:33:42,838 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:33:42,838 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-05 20:33:42,838 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:33:42,838 INFO L87 Difference]: Start difference. First operand 1415 states and 4371 transitions. Second operand has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:33:43,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:33:43,010 INFO L93 Difference]: Finished difference Result 1661 states and 5048 transitions. [2021-06-05 20:33:43,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-05 20:33:43,010 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:33:43,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:33:43,013 INFO L225 Difference]: With dead ends: 1661 [2021-06-05 20:33:43,013 INFO L226 Difference]: Without dead ends: 1528 [2021-06-05 20:33:43,014 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 47.6ms TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:33:43,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1528 states. [2021-06-05 20:33:43,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1528 to 1405. [2021-06-05 20:33:43,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1405 states, 1404 states have (on average 3.0868945868945867) internal successors, (4334), 1404 states have internal predecessors, (4334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:33:43,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1405 states to 1405 states and 4334 transitions. [2021-06-05 20:33:43,038 INFO L78 Accepts]: Start accepts. Automaton has 1405 states and 4334 transitions. Word has length 26 [2021-06-05 20:33:43,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:33:43,038 INFO L482 AbstractCegarLoop]: Abstraction has 1405 states and 4334 transitions. [2021-06-05 20:33:43,038 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:33:43,038 INFO L276 IsEmpty]: Start isEmpty. Operand 1405 states and 4334 transitions. [2021-06-05 20:33:43,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:33:43,040 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:33:43,040 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:33:43,040 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-06-05 20:33:43,040 INFO L430 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:33:43,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:33:43,041 INFO L82 PathProgramCache]: Analyzing trace with hash 254270518, now seen corresponding path program 12 times [2021-06-05 20:33:43,041 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:33:43,041 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [437760394] [2021-06-05 20:33:43,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:33:43,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:33:43,102 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:33:43,102 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:33:43,102 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [437760394] [2021-06-05 20:33:43,102 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [437760394] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:33:43,102 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:33:43,102 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:33:43,102 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1968210141] [2021-06-05 20:33:43,103 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-05 20:33:43,103 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:33:43,103 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-05 20:33:43,103 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:33:43,103 INFO L87 Difference]: Start difference. First operand 1405 states and 4334 transitions. Second operand has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:33:43,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:33:43,271 INFO L93 Difference]: Finished difference Result 1871 states and 5674 transitions. [2021-06-05 20:33:43,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-05 20:33:43,272 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:33:43,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:33:43,275 INFO L225 Difference]: With dead ends: 1871 [2021-06-05 20:33:43,275 INFO L226 Difference]: Without dead ends: 1726 [2021-06-05 20:33:43,275 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 41.7ms TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:33:43,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1726 states. [2021-06-05 20:33:43,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1726 to 1433. [2021-06-05 20:33:43,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1433 states, 1432 states have (on average 3.0858938547486034) internal successors, (4419), 1432 states have internal predecessors, (4419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:33:43,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1433 states to 1433 states and 4419 transitions. [2021-06-05 20:33:43,303 INFO L78 Accepts]: Start accepts. Automaton has 1433 states and 4419 transitions. Word has length 26 [2021-06-05 20:33:43,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:33:43,304 INFO L482 AbstractCegarLoop]: Abstraction has 1433 states and 4419 transitions. [2021-06-05 20:33:43,304 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:33:43,304 INFO L276 IsEmpty]: Start isEmpty. Operand 1433 states and 4419 transitions. [2021-06-05 20:33:43,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:33:43,306 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:33:43,306 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:33:43,306 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-06-05 20:33:43,306 INFO L430 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:33:43,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:33:43,306 INFO L82 PathProgramCache]: Analyzing trace with hash -1201287140, now seen corresponding path program 13 times [2021-06-05 20:33:43,306 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:33:43,306 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [4471730] [2021-06-05 20:33:43,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:33:43,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:33:43,361 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:33:43,361 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:33:43,361 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [4471730] [2021-06-05 20:33:43,361 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [4471730] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:33:43,361 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:33:43,361 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:33:43,361 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [59165026] [2021-06-05 20:33:43,361 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-05 20:33:43,361 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:33:43,362 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-05 20:33:43,362 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:33:43,362 INFO L87 Difference]: Start difference. First operand 1433 states and 4419 transitions. Second operand has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:33:43,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:33:43,512 INFO L93 Difference]: Finished difference Result 1746 states and 5285 transitions. [2021-06-05 20:33:43,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-05 20:33:43,512 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:33:43,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:33:43,516 INFO L225 Difference]: With dead ends: 1746 [2021-06-05 20:33:43,516 INFO L226 Difference]: Without dead ends: 1561 [2021-06-05 20:33:43,516 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 41.1ms TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:33:43,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1561 states. [2021-06-05 20:33:43,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1561 to 1389. [2021-06-05 20:33:43,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1389 states, 1388 states have (on average 3.0871757925072045) internal successors, (4285), 1388 states have internal predecessors, (4285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:33:43,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1389 states to 1389 states and 4285 transitions. [2021-06-05 20:33:43,540 INFO L78 Accepts]: Start accepts. Automaton has 1389 states and 4285 transitions. Word has length 26 [2021-06-05 20:33:43,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:33:43,540 INFO L482 AbstractCegarLoop]: Abstraction has 1389 states and 4285 transitions. [2021-06-05 20:33:43,540 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:33:43,540 INFO L276 IsEmpty]: Start isEmpty. Operand 1389 states and 4285 transitions. [2021-06-05 20:33:43,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:33:43,542 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:33:43,542 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:33:43,542 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-06-05 20:33:43,543 INFO L430 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:33:43,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:33:43,543 INFO L82 PathProgramCache]: Analyzing trace with hash 1140197304, now seen corresponding path program 14 times [2021-06-05 20:33:43,543 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:33:43,543 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1417696243] [2021-06-05 20:33:43,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:33:43,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:33:43,599 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:33:43,599 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:33:43,599 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1417696243] [2021-06-05 20:33:43,600 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1417696243] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:33:43,600 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:33:43,600 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:33:43,600 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [983626144] [2021-06-05 20:33:43,600 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-05 20:33:43,600 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:33:43,600 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-05 20:33:43,600 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:33:43,600 INFO L87 Difference]: Start difference. First operand 1389 states and 4285 transitions. Second operand has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:33:43,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:33:43,744 INFO L93 Difference]: Finished difference Result 1686 states and 5109 transitions. [2021-06-05 20:33:43,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-05 20:33:43,744 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:33:43,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:33:43,747 INFO L225 Difference]: With dead ends: 1686 [2021-06-05 20:33:43,747 INFO L226 Difference]: Without dead ends: 1511 [2021-06-05 20:33:43,748 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 40.0ms TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:33:43,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1511 states. [2021-06-05 20:33:43,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1511 to 1339. [2021-06-05 20:33:43,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1339 states, 1338 states have (on average 3.0904334828101643) internal successors, (4135), 1338 states have internal predecessors, (4135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:33:43,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1339 states to 1339 states and 4135 transitions. [2021-06-05 20:33:43,773 INFO L78 Accepts]: Start accepts. Automaton has 1339 states and 4135 transitions. Word has length 26 [2021-06-05 20:33:43,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:33:43,773 INFO L482 AbstractCegarLoop]: Abstraction has 1339 states and 4135 transitions. [2021-06-05 20:33:43,774 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:33:43,774 INFO L276 IsEmpty]: Start isEmpty. Operand 1339 states and 4135 transitions. [2021-06-05 20:33:43,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:33:43,775 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:33:43,776 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:33:43,776 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-06-05 20:33:43,776 INFO L430 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:33:43,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:33:43,776 INFO L82 PathProgramCache]: Analyzing trace with hash -1396096486, now seen corresponding path program 15 times [2021-06-05 20:33:43,776 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:33:43,776 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [382604045] [2021-06-05 20:33:43,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:33:43,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:33:43,837 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:33:43,838 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:33:43,838 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [382604045] [2021-06-05 20:33:43,838 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [382604045] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:33:43,838 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:33:43,838 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:33:43,838 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1583706049] [2021-06-05 20:33:43,838 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-05 20:33:43,838 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:33:43,838 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-05 20:33:43,838 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:33:43,839 INFO L87 Difference]: Start difference. First operand 1339 states and 4135 transitions. Second operand has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:33:43,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:33:43,996 INFO L93 Difference]: Finished difference Result 1627 states and 4941 transitions. [2021-06-05 20:33:43,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-05 20:33:43,996 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:33:43,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:33:43,999 INFO L225 Difference]: With dead ends: 1627 [2021-06-05 20:33:43,999 INFO L226 Difference]: Without dead ends: 1462 [2021-06-05 20:33:44,000 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 43.9ms TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:33:44,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1462 states. [2021-06-05 20:33:44,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1462 to 1322. [2021-06-05 20:33:44,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1322 states, 1321 states have (on average 3.093111279333838) internal successors, (4086), 1321 states have internal predecessors, (4086), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:33:44,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1322 states to 1322 states and 4086 transitions. [2021-06-05 20:33:44,027 INFO L78 Accepts]: Start accepts. Automaton has 1322 states and 4086 transitions. Word has length 26 [2021-06-05 20:33:44,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:33:44,027 INFO L482 AbstractCegarLoop]: Abstraction has 1322 states and 4086 transitions. [2021-06-05 20:33:44,027 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:33:44,027 INFO L276 IsEmpty]: Start isEmpty. Operand 1322 states and 4086 transitions. [2021-06-05 20:33:44,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:33:44,029 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:33:44,029 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:33:44,029 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-06-05 20:33:44,029 INFO L430 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:33:44,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:33:44,029 INFO L82 PathProgramCache]: Analyzing trace with hash -1995363108, now seen corresponding path program 16 times [2021-06-05 20:33:44,030 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:33:44,030 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1067562407] [2021-06-05 20:33:44,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:33:44,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:33:44,087 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:33:44,087 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:33:44,087 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1067562407] [2021-06-05 20:33:44,087 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1067562407] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:33:44,087 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:33:44,087 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:33:44,087 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1747589816] [2021-06-05 20:33:44,088 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-05 20:33:44,088 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:33:44,089 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-05 20:33:44,089 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:33:44,089 INFO L87 Difference]: Start difference. First operand 1322 states and 4086 transitions. Second operand has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:33:44,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:33:44,222 INFO L93 Difference]: Finished difference Result 1728 states and 5256 transitions. [2021-06-05 20:33:44,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-05 20:33:44,222 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:33:44,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:33:44,225 INFO L225 Difference]: With dead ends: 1728 [2021-06-05 20:33:44,225 INFO L226 Difference]: Without dead ends: 1573 [2021-06-05 20:33:44,225 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 43.8ms TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:33:44,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1573 states. [2021-06-05 20:33:44,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1573 to 1301. [2021-06-05 20:33:44,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1301 states, 1300 states have (on average 3.0930769230769233) internal successors, (4021), 1300 states have internal predecessors, (4021), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:33:44,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1301 states to 1301 states and 4021 transitions. [2021-06-05 20:33:44,246 INFO L78 Accepts]: Start accepts. Automaton has 1301 states and 4021 transitions. Word has length 26 [2021-06-05 20:33:44,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:33:44,246 INFO L482 AbstractCegarLoop]: Abstraction has 1301 states and 4021 transitions. [2021-06-05 20:33:44,246 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:33:44,246 INFO L276 IsEmpty]: Start isEmpty. Operand 1301 states and 4021 transitions. [2021-06-05 20:33:44,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:33:44,248 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:33:44,248 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:33:44,248 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-06-05 20:33:44,248 INFO L430 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:33:44,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:33:44,248 INFO L82 PathProgramCache]: Analyzing trace with hash 1729596350, now seen corresponding path program 17 times [2021-06-05 20:33:44,248 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:33:44,248 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [169271388] [2021-06-05 20:33:44,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:33:44,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:33:44,302 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:33:44,303 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:33:44,303 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [169271388] [2021-06-05 20:33:44,303 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [169271388] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:33:44,303 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:33:44,303 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:33:44,303 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2109062956] [2021-06-05 20:33:44,303 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-05 20:33:44,303 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:33:44,303 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-05 20:33:44,303 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:33:44,304 INFO L87 Difference]: Start difference. First operand 1301 states and 4021 transitions. Second operand has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:33:44,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:33:44,438 INFO L93 Difference]: Finished difference Result 1527 states and 4646 transitions. [2021-06-05 20:33:44,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-05 20:33:44,438 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:33:44,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:33:44,441 INFO L225 Difference]: With dead ends: 1527 [2021-06-05 20:33:44,441 INFO L226 Difference]: Without dead ends: 1316 [2021-06-05 20:33:44,441 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 41.5ms TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:33:44,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1316 states. [2021-06-05 20:33:44,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1316 to 1138. [2021-06-05 20:33:44,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1138 states, 1137 states have (on average 3.1213720316622693) internal successors, (3549), 1137 states have internal predecessors, (3549), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:33:44,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1138 states to 1138 states and 3549 transitions. [2021-06-05 20:33:44,459 INFO L78 Accepts]: Start accepts. Automaton has 1138 states and 3549 transitions. Word has length 26 [2021-06-05 20:33:44,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:33:44,460 INFO L482 AbstractCegarLoop]: Abstraction has 1138 states and 3549 transitions. [2021-06-05 20:33:44,460 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:33:44,460 INFO L276 IsEmpty]: Start isEmpty. Operand 1138 states and 3549 transitions. [2021-06-05 20:33:44,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:33:44,461 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:33:44,461 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:33:44,461 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-06-05 20:33:44,461 INFO L430 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:33:44,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:33:44,462 INFO L82 PathProgramCache]: Analyzing trace with hash 1175403642, now seen corresponding path program 18 times [2021-06-05 20:33:44,462 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:33:44,462 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2023293466] [2021-06-05 20:33:44,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:33:44,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:33:44,513 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:33:44,513 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:33:44,513 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2023293466] [2021-06-05 20:33:44,513 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2023293466] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:33:44,513 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:33:44,514 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-05 20:33:44,514 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [80352190] [2021-06-05 20:33:44,514 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:33:44,514 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:33:44,514 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:33:44,514 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:33:44,514 INFO L87 Difference]: Start difference. First operand 1138 states and 3549 transitions. Second operand has 8 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 7 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:33:44,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:33:44,617 INFO L93 Difference]: Finished difference Result 1698 states and 5175 transitions. [2021-06-05 20:33:44,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:33:44,617 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 7 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:33:44,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:33:44,620 INFO L225 Difference]: With dead ends: 1698 [2021-06-05 20:33:44,620 INFO L226 Difference]: Without dead ends: 1446 [2021-06-05 20:33:44,620 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 38.3ms TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:33:44,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1446 states. [2021-06-05 20:33:44,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1446 to 1252. [2021-06-05 20:33:44,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1252 states, 1251 states have (on average 3.079136690647482) internal successors, (3852), 1251 states have internal predecessors, (3852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:33:44,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1252 states to 1252 states and 3852 transitions. [2021-06-05 20:33:44,639 INFO L78 Accepts]: Start accepts. Automaton has 1252 states and 3852 transitions. Word has length 26 [2021-06-05 20:33:44,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:33:44,640 INFO L482 AbstractCegarLoop]: Abstraction has 1252 states and 3852 transitions. [2021-06-05 20:33:44,640 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 7 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:33:44,640 INFO L276 IsEmpty]: Start isEmpty. Operand 1252 states and 3852 transitions. [2021-06-05 20:33:44,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:33:44,641 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:33:44,641 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:33:44,641 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-06-05 20:33:44,641 INFO L430 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:33:44,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:33:44,642 INFO L82 PathProgramCache]: Analyzing trace with hash 315818648, now seen corresponding path program 19 times [2021-06-05 20:33:44,642 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:33:44,642 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1361960052] [2021-06-05 20:33:44,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:33:44,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:33:44,692 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:33:44,693 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:33:44,693 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1361960052] [2021-06-05 20:33:44,693 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1361960052] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:33:44,693 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:33:44,693 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:33:44,693 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [475904700] [2021-06-05 20:33:44,693 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-05 20:33:44,693 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:33:44,693 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-05 20:33:44,693 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:33:44,693 INFO L87 Difference]: Start difference. First operand 1252 states and 3852 transitions. Second operand has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:33:44,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:33:44,851 INFO L93 Difference]: Finished difference Result 1559 states and 4705 transitions. [2021-06-05 20:33:44,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-05 20:33:44,852 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:33:44,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:33:44,854 INFO L225 Difference]: With dead ends: 1559 [2021-06-05 20:33:44,854 INFO L226 Difference]: Without dead ends: 1310 [2021-06-05 20:33:44,855 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 38.3ms TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:33:44,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1310 states. [2021-06-05 20:33:44,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1310 to 1106. [2021-06-05 20:33:44,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1106 states, 1105 states have (on average 3.08868778280543) internal successors, (3413), 1105 states have internal predecessors, (3413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:33:44,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1106 states to 1106 states and 3413 transitions. [2021-06-05 20:33:44,871 INFO L78 Accepts]: Start accepts. Automaton has 1106 states and 3413 transitions. Word has length 26 [2021-06-05 20:33:44,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:33:44,872 INFO L482 AbstractCegarLoop]: Abstraction has 1106 states and 3413 transitions. [2021-06-05 20:33:44,872 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:33:44,872 INFO L276 IsEmpty]: Start isEmpty. Operand 1106 states and 3413 transitions. [2021-06-05 20:33:44,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:33:44,873 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:33:44,873 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:33:44,873 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-06-05 20:33:44,873 INFO L430 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:33:44,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:33:44,873 INFO L82 PathProgramCache]: Analyzing trace with hash -734660104, now seen corresponding path program 20 times [2021-06-05 20:33:44,874 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:33:44,874 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [511465592] [2021-06-05 20:33:44,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:33:44,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:33:44,938 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:33:44,938 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:33:44,938 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [511465592] [2021-06-05 20:33:44,938 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [511465592] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:33:44,938 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:33:44,938 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:33:44,938 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1653113135] [2021-06-05 20:33:44,939 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-05 20:33:44,939 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:33:44,939 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-05 20:33:44,939 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:33:44,939 INFO L87 Difference]: Start difference. First operand 1106 states and 3413 transitions. Second operand has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:33:45,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:33:45,060 INFO L93 Difference]: Finished difference Result 1455 states and 4380 transitions. [2021-06-05 20:33:45,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-05 20:33:45,061 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:33:45,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:33:45,063 INFO L225 Difference]: With dead ends: 1455 [2021-06-05 20:33:45,063 INFO L226 Difference]: Without dead ends: 1268 [2021-06-05 20:33:45,063 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 52.3ms TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:33:45,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1268 states. [2021-06-05 20:33:45,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1268 to 1116. [2021-06-05 20:33:45,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1116 states, 1115 states have (on average 3.077130044843049) internal successors, (3431), 1115 states have internal predecessors, (3431), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:33:45,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1116 states to 1116 states and 3431 transitions. [2021-06-05 20:33:45,079 INFO L78 Accepts]: Start accepts. Automaton has 1116 states and 3431 transitions. Word has length 26 [2021-06-05 20:33:45,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:33:45,079 INFO L482 AbstractCegarLoop]: Abstraction has 1116 states and 3431 transitions. [2021-06-05 20:33:45,079 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:33:45,079 INFO L276 IsEmpty]: Start isEmpty. Operand 1116 states and 3431 transitions. [2021-06-05 20:33:45,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:33:45,080 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:33:45,080 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:33:45,081 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-06-05 20:33:45,081 INFO L430 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:33:45,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:33:45,081 INFO L82 PathProgramCache]: Analyzing trace with hash -1594245098, now seen corresponding path program 21 times [2021-06-05 20:33:45,081 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:33:45,081 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [387658952] [2021-06-05 20:33:45,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:33:45,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:33:45,145 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:33:45,146 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:33:45,146 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [387658952] [2021-06-05 20:33:45,146 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [387658952] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:33:45,146 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:33:45,146 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 20:33:45,146 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1157338563] [2021-06-05 20:33:45,146 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 20:33:45,146 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:33:45,146 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 20:33:45,146 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:33:45,147 INFO L87 Difference]: Start difference. First operand 1116 states and 3431 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:33:45,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:33:45,334 INFO L93 Difference]: Finished difference Result 1381 states and 4160 transitions. [2021-06-05 20:33:45,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 20:33:45,334 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:33:45,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:33:45,337 INFO L225 Difference]: With dead ends: 1381 [2021-06-05 20:33:45,337 INFO L226 Difference]: Without dead ends: 1226 [2021-06-05 20:33:45,337 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 51.8ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:33:45,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1226 states. [2021-06-05 20:33:45,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1226 to 1090. [2021-06-05 20:33:45,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1090 states, 1089 states have (on average 3.0899908172635446) internal successors, (3365), 1089 states have internal predecessors, (3365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:33:45,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1090 states to 1090 states and 3365 transitions. [2021-06-05 20:33:45,352 INFO L78 Accepts]: Start accepts. Automaton has 1090 states and 3365 transitions. Word has length 26 [2021-06-05 20:33:45,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:33:45,352 INFO L482 AbstractCegarLoop]: Abstraction has 1090 states and 3365 transitions. [2021-06-05 20:33:45,353 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:33:45,353 INFO L276 IsEmpty]: Start isEmpty. Operand 1090 states and 3365 transitions. [2021-06-05 20:33:45,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:33:45,354 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:33:45,354 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:33:45,354 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-06-05 20:33:45,354 INFO L430 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:33:45,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:33:45,355 INFO L82 PathProgramCache]: Analyzing trace with hash -180223212, now seen corresponding path program 22 times [2021-06-05 20:33:45,355 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:33:45,355 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1180899752] [2021-06-05 20:33:45,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:33:45,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:33:45,409 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:33:45,409 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:33:45,410 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1180899752] [2021-06-05 20:33:45,410 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1180899752] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:33:45,410 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:33:45,410 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:33:45,410 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [402231887] [2021-06-05 20:33:45,410 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-05 20:33:45,410 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:33:45,410 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-05 20:33:45,410 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:33:45,411 INFO L87 Difference]: Start difference. First operand 1090 states and 3365 transitions. Second operand has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:33:45,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:33:45,547 INFO L93 Difference]: Finished difference Result 1426 states and 4315 transitions. [2021-06-05 20:33:45,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-05 20:33:45,547 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:33:45,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:33:45,549 INFO L225 Difference]: With dead ends: 1426 [2021-06-05 20:33:45,549 INFO L226 Difference]: Without dead ends: 1303 [2021-06-05 20:33:45,549 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 40.7ms TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:33:45,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1303 states. [2021-06-05 20:33:45,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1303 to 1149. [2021-06-05 20:33:45,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1149 states, 1148 states have (on average 3.0888501742160277) internal successors, (3546), 1148 states have internal predecessors, (3546), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:33:45,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1149 states to 1149 states and 3546 transitions. [2021-06-05 20:33:45,565 INFO L78 Accepts]: Start accepts. Automaton has 1149 states and 3546 transitions. Word has length 26 [2021-06-05 20:33:45,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:33:45,565 INFO L482 AbstractCegarLoop]: Abstraction has 1149 states and 3546 transitions. [2021-06-05 20:33:45,565 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:33:45,565 INFO L276 IsEmpty]: Start isEmpty. Operand 1149 states and 3546 transitions. [2021-06-05 20:33:45,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:33:45,567 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:33:45,567 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:33:45,567 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-06-05 20:33:45,567 INFO L430 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:33:45,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:33:45,567 INFO L82 PathProgramCache]: Analyzing trace with hash 1578450294, now seen corresponding path program 23 times [2021-06-05 20:33:45,567 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:33:45,567 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [512387025] [2021-06-05 20:33:45,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:33:45,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:33:45,623 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:33:45,623 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:33:45,623 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [512387025] [2021-06-05 20:33:45,623 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [512387025] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:33:45,623 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:33:45,624 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 20:33:45,624 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1822555508] [2021-06-05 20:33:45,624 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 20:33:45,624 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:33:45,624 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 20:33:45,624 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:33:45,624 INFO L87 Difference]: Start difference. First operand 1149 states and 3546 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:33:45,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:33:45,807 INFO L93 Difference]: Finished difference Result 1438 states and 4359 transitions. [2021-06-05 20:33:45,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 20:33:45,807 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:33:45,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:33:45,809 INFO L225 Difference]: With dead ends: 1438 [2021-06-05 20:33:45,809 INFO L226 Difference]: Without dead ends: 1327 [2021-06-05 20:33:45,809 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 45.1ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:33:45,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1327 states. [2021-06-05 20:33:45,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1327 to 1164. [2021-06-05 20:33:45,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1164 states, 1163 states have (on average 3.0885640584694753) internal successors, (3592), 1163 states have internal predecessors, (3592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:33:45,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1164 states to 1164 states and 3592 transitions. [2021-06-05 20:33:45,847 INFO L78 Accepts]: Start accepts. Automaton has 1164 states and 3592 transitions. Word has length 26 [2021-06-05 20:33:45,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:33:45,847 INFO L482 AbstractCegarLoop]: Abstraction has 1164 states and 3592 transitions. [2021-06-05 20:33:45,847 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:33:45,847 INFO L276 IsEmpty]: Start isEmpty. Operand 1164 states and 3592 transitions. [2021-06-05 20:33:45,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:33:45,849 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:33:45,849 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:33:45,849 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-06-05 20:33:45,849 INFO L430 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:33:45,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:33:45,850 INFO L82 PathProgramCache]: Analyzing trace with hash -1847072394, now seen corresponding path program 24 times [2021-06-05 20:33:45,850 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:33:45,850 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1413957077] [2021-06-05 20:33:45,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:33:45,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:33:45,916 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:33:45,916 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:33:45,916 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1413957077] [2021-06-05 20:33:45,916 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1413957077] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:33:45,916 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:33:45,916 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 20:33:45,916 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [960224954] [2021-06-05 20:33:45,916 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 20:33:45,916 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:33:45,917 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 20:33:45,917 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:33:45,917 INFO L87 Difference]: Start difference. First operand 1164 states and 3592 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:33:46,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:33:46,085 INFO L93 Difference]: Finished difference Result 1343 states and 4063 transitions. [2021-06-05 20:33:46,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 20:33:46,086 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:33:46,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:33:46,088 INFO L225 Difference]: With dead ends: 1343 [2021-06-05 20:33:46,088 INFO L226 Difference]: Without dead ends: 1209 [2021-06-05 20:33:46,088 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 50.4ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:33:46,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1209 states. [2021-06-05 20:33:46,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1209 to 1153. [2021-06-05 20:33:46,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1153 states, 1152 states have (on average 3.087673611111111) internal successors, (3557), 1152 states have internal predecessors, (3557), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:33:46,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1153 states to 1153 states and 3557 transitions. [2021-06-05 20:33:46,107 INFO L78 Accepts]: Start accepts. Automaton has 1153 states and 3557 transitions. Word has length 26 [2021-06-05 20:33:46,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:33:46,107 INFO L482 AbstractCegarLoop]: Abstraction has 1153 states and 3557 transitions. [2021-06-05 20:33:46,107 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:33:46,107 INFO L276 IsEmpty]: Start isEmpty. Operand 1153 states and 3557 transitions. [2021-06-05 20:33:46,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:33:46,108 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:33:46,108 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:33:46,109 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-06-05 20:33:46,109 INFO L430 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:33:46,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:33:46,109 INFO L82 PathProgramCache]: Analyzing trace with hash 979183672, now seen corresponding path program 25 times [2021-06-05 20:33:46,109 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:33:46,109 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1041161021] [2021-06-05 20:33:46,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:33:46,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:33:46,173 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:33:46,173 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:33:46,173 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1041161021] [2021-06-05 20:33:46,173 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1041161021] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:33:46,173 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:33:46,173 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 20:33:46,173 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2125533105] [2021-06-05 20:33:46,173 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 20:33:46,173 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:33:46,174 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 20:33:46,174 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:33:46,174 INFO L87 Difference]: Start difference. First operand 1153 states and 3557 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:33:46,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:33:46,335 INFO L93 Difference]: Finished difference Result 1431 states and 4320 transitions. [2021-06-05 20:33:46,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 20:33:46,337 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:33:46,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:33:46,338 INFO L225 Difference]: With dead ends: 1431 [2021-06-05 20:33:46,338 INFO L226 Difference]: Without dead ends: 1310 [2021-06-05 20:33:46,339 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 51.5ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:33:46,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1310 states. [2021-06-05 20:33:46,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1310 to 1143. [2021-06-05 20:33:46,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1143 states, 1142 states have (on average 3.088441330998249) internal successors, (3527), 1142 states have internal predecessors, (3527), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:33:46,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1143 states to 1143 states and 3527 transitions. [2021-06-05 20:33:46,354 INFO L78 Accepts]: Start accepts. Automaton has 1143 states and 3527 transitions. Word has length 26 [2021-06-05 20:33:46,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:33:46,354 INFO L482 AbstractCegarLoop]: Abstraction has 1143 states and 3527 transitions. [2021-06-05 20:33:46,354 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:33:46,354 INFO L276 IsEmpty]: Start isEmpty. Operand 1143 states and 3527 transitions. [2021-06-05 20:33:46,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:33:46,356 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:33:46,356 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:33:46,356 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-06-05 20:33:46,356 INFO L430 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:33:46,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:33:46,356 INFO L82 PathProgramCache]: Analyzing trace with hash 969781306, now seen corresponding path program 26 times [2021-06-05 20:33:46,356 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:33:46,356 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1449548494] [2021-06-05 20:33:46,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:33:46,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:33:46,408 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:33:46,408 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:33:46,408 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1449548494] [2021-06-05 20:33:46,408 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1449548494] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:33:46,408 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:33:46,408 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:33:46,408 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [400657803] [2021-06-05 20:33:46,409 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-05 20:33:46,409 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:33:46,409 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-05 20:33:46,409 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:33:46,409 INFO L87 Difference]: Start difference. First operand 1143 states and 3527 transitions. Second operand has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:33:46,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:33:46,556 INFO L93 Difference]: Finished difference Result 1389 states and 4203 transitions. [2021-06-05 20:33:46,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-05 20:33:46,556 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:33:46,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:33:46,558 INFO L225 Difference]: With dead ends: 1389 [2021-06-05 20:33:46,558 INFO L226 Difference]: Without dead ends: 1278 [2021-06-05 20:33:46,558 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 40.2ms TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:33:46,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1278 states. [2021-06-05 20:33:46,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1278 to 1180. [2021-06-05 20:33:46,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1180 states, 1179 states have (on average 3.082273112807464) internal successors, (3634), 1179 states have internal predecessors, (3634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:33:46,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1180 states to 1180 states and 3634 transitions. [2021-06-05 20:33:46,574 INFO L78 Accepts]: Start accepts. Automaton has 1180 states and 3634 transitions. Word has length 26 [2021-06-05 20:33:46,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:33:46,574 INFO L482 AbstractCegarLoop]: Abstraction has 1180 states and 3634 transitions. [2021-06-05 20:33:46,575 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:33:46,575 INFO L276 IsEmpty]: Start isEmpty. Operand 1180 states and 3634 transitions. [2021-06-05 20:33:46,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:33:46,576 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:33:46,576 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:33:46,576 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-06-05 20:33:46,576 INFO L430 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:33:46,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:33:46,577 INFO L82 PathProgramCache]: Analyzing trace with hash 1839225914, now seen corresponding path program 27 times [2021-06-05 20:33:46,577 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:33:46,577 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [387249110] [2021-06-05 20:33:46,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:33:46,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:33:46,632 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:33:46,632 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:33:46,632 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [387249110] [2021-06-05 20:33:46,632 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [387249110] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:33:46,632 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:33:46,632 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 20:33:46,632 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1265377096] [2021-06-05 20:33:46,632 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 20:33:46,632 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:33:46,633 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 20:33:46,633 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:33:46,633 INFO L87 Difference]: Start difference. First operand 1180 states and 3634 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:33:46,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:33:46,791 INFO L93 Difference]: Finished difference Result 1506 states and 4529 transitions. [2021-06-05 20:33:46,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 20:33:46,792 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:33:46,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:33:46,793 INFO L225 Difference]: With dead ends: 1506 [2021-06-05 20:33:46,793 INFO L226 Difference]: Without dead ends: 1281 [2021-06-05 20:33:46,793 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 44.7ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:33:46,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1281 states. [2021-06-05 20:33:46,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1281 to 1143. [2021-06-05 20:33:46,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1143 states, 1142 states have (on average 3.0674255691768826) internal successors, (3503), 1142 states have internal predecessors, (3503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:33:46,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1143 states to 1143 states and 3503 transitions. [2021-06-05 20:33:46,808 INFO L78 Accepts]: Start accepts. Automaton has 1143 states and 3503 transitions. Word has length 26 [2021-06-05 20:33:46,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:33:46,808 INFO L482 AbstractCegarLoop]: Abstraction has 1143 states and 3503 transitions. [2021-06-05 20:33:46,808 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:33:46,808 INFO L276 IsEmpty]: Start isEmpty. Operand 1143 states and 3503 transitions. [2021-06-05 20:33:46,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:33:46,810 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:33:46,810 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:33:46,810 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-06-05 20:33:46,810 INFO L430 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:33:46,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:33:46,810 INFO L82 PathProgramCache]: Analyzing trace with hash -747959464, now seen corresponding path program 28 times [2021-06-05 20:33:46,810 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:33:46,810 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [965891157] [2021-06-05 20:33:46,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:33:46,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:33:46,893 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:33:46,893 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:33:46,893 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [965891157] [2021-06-05 20:33:46,893 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [965891157] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:33:46,893 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:33:46,893 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 20:33:46,894 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [763292343] [2021-06-05 20:33:46,894 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 20:33:46,894 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:33:46,894 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 20:33:46,894 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:33:46,894 INFO L87 Difference]: Start difference. First operand 1143 states and 3503 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:33:47,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:33:47,067 INFO L93 Difference]: Finished difference Result 1303 states and 3927 transitions. [2021-06-05 20:33:47,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 20:33:47,068 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:33:47,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:33:47,069 INFO L225 Difference]: With dead ends: 1303 [2021-06-05 20:33:47,069 INFO L226 Difference]: Without dead ends: 1192 [2021-06-05 20:33:47,069 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 49.5ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:33:47,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1192 states. [2021-06-05 20:33:47,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1192 to 1154. [2021-06-05 20:33:47,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1154 states, 1153 states have (on average 3.065047701647875) internal successors, (3534), 1153 states have internal predecessors, (3534), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:33:47,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1154 states to 1154 states and 3534 transitions. [2021-06-05 20:33:47,084 INFO L78 Accepts]: Start accepts. Automaton has 1154 states and 3534 transitions. Word has length 26 [2021-06-05 20:33:47,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:33:47,084 INFO L482 AbstractCegarLoop]: Abstraction has 1154 states and 3534 transitions. [2021-06-05 20:33:47,084 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:33:47,084 INFO L276 IsEmpty]: Start isEmpty. Operand 1154 states and 3534 transitions. [2021-06-05 20:33:47,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:33:47,085 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:33:47,085 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:33:47,085 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-06-05 20:33:47,085 INFO L430 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:33:47,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:33:47,086 INFO L82 PathProgramCache]: Analyzing trace with hash 121485144, now seen corresponding path program 29 times [2021-06-05 20:33:47,086 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:33:47,086 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [854123826] [2021-06-05 20:33:47,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:33:47,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:33:47,156 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:33:47,157 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:33:47,157 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [854123826] [2021-06-05 20:33:47,157 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [854123826] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:33:47,157 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:33:47,157 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 20:33:47,157 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1297421563] [2021-06-05 20:33:47,157 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 20:33:47,157 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:33:47,157 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 20:33:47,157 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:33:47,158 INFO L87 Difference]: Start difference. First operand 1154 states and 3534 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:33:47,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:33:47,323 INFO L93 Difference]: Finished difference Result 1496 states and 4503 transitions. [2021-06-05 20:33:47,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 20:33:47,323 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:33:47,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:33:47,325 INFO L225 Difference]: With dead ends: 1496 [2021-06-05 20:33:47,325 INFO L226 Difference]: Without dead ends: 1369 [2021-06-05 20:33:47,325 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 50.5ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:33:47,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1369 states. [2021-06-05 20:33:47,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1369 to 1143. [2021-06-05 20:33:47,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1143 states, 1142 states have (on average 3.0656742556917687) internal successors, (3501), 1142 states have internal predecessors, (3501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:33:47,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1143 states to 1143 states and 3501 transitions. [2021-06-05 20:33:47,340 INFO L78 Accepts]: Start accepts. Automaton has 1143 states and 3501 transitions. Word has length 26 [2021-06-05 20:33:47,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:33:47,340 INFO L482 AbstractCegarLoop]: Abstraction has 1143 states and 3501 transitions. [2021-06-05 20:33:47,340 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:33:47,340 INFO L276 IsEmpty]: Start isEmpty. Operand 1143 states and 3501 transitions. [2021-06-05 20:33:47,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:33:47,342 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:33:47,342 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:33:47,342 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-06-05 20:33:47,342 INFO L430 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:33:47,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:33:47,342 INFO L82 PathProgramCache]: Analyzing trace with hash -1334072514, now seen corresponding path program 30 times [2021-06-05 20:33:47,342 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:33:47,342 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [294741604] [2021-06-05 20:33:47,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:33:47,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:33:47,402 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:33:47,402 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:33:47,402 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [294741604] [2021-06-05 20:33:47,402 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [294741604] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:33:47,402 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:33:47,402 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 20:33:47,402 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [325268688] [2021-06-05 20:33:47,402 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 20:33:47,403 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:33:47,403 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 20:33:47,403 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:33:47,403 INFO L87 Difference]: Start difference. First operand 1143 states and 3501 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:33:47,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:33:47,562 INFO L93 Difference]: Finished difference Result 1406 states and 4227 transitions. [2021-06-05 20:33:47,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 20:33:47,563 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:33:47,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:33:47,564 INFO L225 Difference]: With dead ends: 1406 [2021-06-05 20:33:47,564 INFO L226 Difference]: Without dead ends: 1239 [2021-06-05 20:33:47,564 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 48.7ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:33:47,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1239 states. [2021-06-05 20:33:47,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1239 to 1113. [2021-06-05 20:33:47,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1113 states, 1112 states have (on average 3.085431654676259) internal successors, (3431), 1112 states have internal predecessors, (3431), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:33:47,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1113 states to 1113 states and 3431 transitions. [2021-06-05 20:33:47,579 INFO L78 Accepts]: Start accepts. Automaton has 1113 states and 3431 transitions. Word has length 26 [2021-06-05 20:33:47,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:33:47,579 INFO L482 AbstractCegarLoop]: Abstraction has 1113 states and 3431 transitions. [2021-06-05 20:33:47,579 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:33:47,579 INFO L276 IsEmpty]: Start isEmpty. Operand 1113 states and 3431 transitions. [2021-06-05 20:33:47,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:33:47,580 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:33:47,580 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:33:47,581 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2021-06-05 20:33:47,581 INFO L430 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:33:47,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:33:47,581 INFO L82 PathProgramCache]: Analyzing trace with hash 1104301336, now seen corresponding path program 31 times [2021-06-05 20:33:47,581 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:33:47,581 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1636606244] [2021-06-05 20:33:47,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:33:47,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:33:47,621 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:33:47,621 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:33:47,621 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1636606244] [2021-06-05 20:33:47,621 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1636606244] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:33:47,621 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:33:47,622 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-05 20:33:47,622 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1371094220] [2021-06-05 20:33:47,622 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:33:47,622 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:33:47,622 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:33:47,622 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:33:47,622 INFO L87 Difference]: Start difference. First operand 1113 states and 3431 transitions. Second operand has 8 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 7 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:33:47,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:33:47,723 INFO L93 Difference]: Finished difference Result 1453 states and 4359 transitions. [2021-06-05 20:33:47,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:33:47,723 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 7 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:33:47,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:33:47,724 INFO L225 Difference]: With dead ends: 1453 [2021-06-05 20:33:47,724 INFO L226 Difference]: Without dead ends: 1292 [2021-06-05 20:33:47,725 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 29.5ms TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:33:47,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1292 states. [2021-06-05 20:33:47,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1292 to 1206. [2021-06-05 20:33:47,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1206 states, 1205 states have (on average 3.0539419087136928) internal successors, (3680), 1205 states have internal predecessors, (3680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:33:47,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1206 states to 1206 states and 3680 transitions. [2021-06-05 20:33:47,739 INFO L78 Accepts]: Start accepts. Automaton has 1206 states and 3680 transitions. Word has length 26 [2021-06-05 20:33:47,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:33:47,739 INFO L482 AbstractCegarLoop]: Abstraction has 1206 states and 3680 transitions. [2021-06-05 20:33:47,739 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 7 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:33:47,740 INFO L276 IsEmpty]: Start isEmpty. Operand 1206 states and 3680 transitions. [2021-06-05 20:33:47,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:33:47,741 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:33:47,741 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:33:47,741 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2021-06-05 20:33:47,741 INFO L430 AbstractCegarLoop]: === Iteration 34 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:33:47,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:33:47,741 INFO L82 PathProgramCache]: Analyzing trace with hash 244716342, now seen corresponding path program 32 times [2021-06-05 20:33:47,741 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:33:47,742 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1788775901] [2021-06-05 20:33:47,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:33:47,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:33:47,802 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:33:47,802 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:33:47,802 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1788775901] [2021-06-05 20:33:47,802 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1788775901] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:33:47,802 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:33:47,802 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:33:47,802 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1102467693] [2021-06-05 20:33:47,803 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-05 20:33:47,803 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:33:47,803 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-05 20:33:47,803 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:33:47,803 INFO L87 Difference]: Start difference. First operand 1206 states and 3680 transitions. Second operand has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:33:47,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:33:47,949 INFO L93 Difference]: Finished difference Result 1409 states and 4234 transitions. [2021-06-05 20:33:47,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-05 20:33:47,950 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:33:47,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:33:47,951 INFO L225 Difference]: With dead ends: 1409 [2021-06-05 20:33:47,951 INFO L226 Difference]: Without dead ends: 1286 [2021-06-05 20:33:47,951 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 42.5ms TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:33:47,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1286 states. [2021-06-05 20:33:47,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1286 to 1180. [2021-06-05 20:33:47,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1180 states, 1179 states have (on average 3.063613231552163) internal successors, (3612), 1179 states have internal predecessors, (3612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:33:47,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1180 states to 1180 states and 3612 transitions. [2021-06-05 20:33:47,966 INFO L78 Accepts]: Start accepts. Automaton has 1180 states and 3612 transitions. Word has length 26 [2021-06-05 20:33:47,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:33:47,966 INFO L482 AbstractCegarLoop]: Abstraction has 1180 states and 3612 transitions. [2021-06-05 20:33:47,966 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:33:47,966 INFO L276 IsEmpty]: Start isEmpty. Operand 1180 states and 3612 transitions. [2021-06-05 20:33:47,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:33:47,968 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:33:47,968 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:33:47,968 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2021-06-05 20:33:47,968 INFO L430 AbstractCegarLoop]: === Iteration 35 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:33:47,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:33:47,968 INFO L82 PathProgramCache]: Analyzing trace with hash -657753510, now seen corresponding path program 33 times [2021-06-05 20:33:47,968 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:33:47,968 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [723240842] [2021-06-05 20:33:47,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:33:47,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:33:48,011 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:33:48,011 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:33:48,011 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [723240842] [2021-06-05 20:33:48,011 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [723240842] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:33:48,011 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:33:48,011 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-05 20:33:48,012 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [234313691] [2021-06-05 20:33:48,012 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:33:48,012 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:33:48,012 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:33:48,012 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:33:48,012 INFO L87 Difference]: Start difference. First operand 1180 states and 3612 transitions. Second operand has 8 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 7 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:33:48,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:33:48,120 INFO L93 Difference]: Finished difference Result 1516 states and 4589 transitions. [2021-06-05 20:33:48,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:33:48,121 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 7 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:33:48,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:33:48,122 INFO L225 Difference]: With dead ends: 1516 [2021-06-05 20:33:48,122 INFO L226 Difference]: Without dead ends: 1419 [2021-06-05 20:33:48,122 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 31.7ms TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:33:48,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1419 states. [2021-06-05 20:33:48,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1419 to 1247. [2021-06-05 20:33:48,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1247 states, 1246 states have (on average 3.0698234349919744) internal successors, (3825), 1246 states have internal predecessors, (3825), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:33:48,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1247 states to 1247 states and 3825 transitions. [2021-06-05 20:33:48,138 INFO L78 Accepts]: Start accepts. Automaton has 1247 states and 3825 transitions. Word has length 26 [2021-06-05 20:33:48,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:33:48,138 INFO L482 AbstractCegarLoop]: Abstraction has 1247 states and 3825 transitions. [2021-06-05 20:33:48,138 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 7 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:33:48,138 INFO L276 IsEmpty]: Start isEmpty. Operand 1247 states and 3825 transitions. [2021-06-05 20:33:48,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:33:48,139 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:33:48,140 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:33:48,140 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2021-06-05 20:33:48,140 INFO L430 AbstractCegarLoop]: === Iteration 36 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:33:48,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:33:48,140 INFO L82 PathProgramCache]: Analyzing trace with hash -1566004646, now seen corresponding path program 34 times [2021-06-05 20:33:48,140 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:33:48,140 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2011111621] [2021-06-05 20:33:48,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:33:48,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:33:48,188 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:33:48,189 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:33:48,189 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2011111621] [2021-06-05 20:33:48,189 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2011111621] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:33:48,189 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:33:48,189 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:33:48,189 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [922388861] [2021-06-05 20:33:48,189 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-05 20:33:48,189 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:33:48,189 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-05 20:33:48,189 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:33:48,189 INFO L87 Difference]: Start difference. First operand 1247 states and 3825 transitions. Second operand has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:33:48,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:33:48,329 INFO L93 Difference]: Finished difference Result 1463 states and 4440 transitions. [2021-06-05 20:33:48,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-05 20:33:48,330 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:33:48,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:33:48,331 INFO L225 Difference]: With dead ends: 1463 [2021-06-05 20:33:48,331 INFO L226 Difference]: Without dead ends: 1384 [2021-06-05 20:33:48,331 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 37.2ms TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:33:48,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1384 states. [2021-06-05 20:33:48,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1384 to 1263. [2021-06-05 20:33:48,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1263 states, 1262 states have (on average 3.0705229793977815) internal successors, (3875), 1262 states have internal predecessors, (3875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:33:48,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1263 states to 1263 states and 3875 transitions. [2021-06-05 20:33:48,350 INFO L78 Accepts]: Start accepts. Automaton has 1263 states and 3875 transitions. Word has length 26 [2021-06-05 20:33:48,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:33:48,351 INFO L482 AbstractCegarLoop]: Abstraction has 1263 states and 3875 transitions. [2021-06-05 20:33:48,351 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:33:48,351 INFO L276 IsEmpty]: Start isEmpty. Operand 1263 states and 3875 transitions. [2021-06-05 20:33:48,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:33:48,352 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:33:48,352 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:33:48,352 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2021-06-05 20:33:48,352 INFO L430 AbstractCegarLoop]: === Iteration 37 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:33:48,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:33:48,353 INFO L82 PathProgramCache]: Analyzing trace with hash -696560038, now seen corresponding path program 35 times [2021-06-05 20:33:48,353 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:33:48,353 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [740175882] [2021-06-05 20:33:48,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:33:48,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:33:48,407 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:33:48,407 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:33:48,407 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [740175882] [2021-06-05 20:33:48,407 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [740175882] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:33:48,407 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:33:48,407 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:33:48,408 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1049915055] [2021-06-05 20:33:48,408 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-05 20:33:48,408 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:33:48,408 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-05 20:33:48,409 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:33:48,409 INFO L87 Difference]: Start difference. First operand 1263 states and 3875 transitions. Second operand has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:33:48,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:33:48,543 INFO L93 Difference]: Finished difference Result 1486 states and 4488 transitions. [2021-06-05 20:33:48,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-05 20:33:48,543 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:33:48,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:33:48,544 INFO L225 Difference]: With dead ends: 1486 [2021-06-05 20:33:48,545 INFO L226 Difference]: Without dead ends: 1382 [2021-06-05 20:33:48,545 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 37.9ms TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:33:48,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1382 states. [2021-06-05 20:33:48,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1382 to 1252. [2021-06-05 20:33:48,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1252 states, 1251 states have (on average 3.0679456434852117) internal successors, (3838), 1251 states have internal predecessors, (3838), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:33:48,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1252 states to 1252 states and 3838 transitions. [2021-06-05 20:33:48,560 INFO L78 Accepts]: Start accepts. Automaton has 1252 states and 3838 transitions. Word has length 26 [2021-06-05 20:33:48,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:33:48,560 INFO L482 AbstractCegarLoop]: Abstraction has 1252 states and 3838 transitions. [2021-06-05 20:33:48,560 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:33:48,560 INFO L276 IsEmpty]: Start isEmpty. Operand 1252 states and 3838 transitions. [2021-06-05 20:33:48,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:33:48,562 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:33:48,562 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:33:48,562 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2021-06-05 20:33:48,562 INFO L430 AbstractCegarLoop]: === Iteration 38 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:33:48,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:33:48,562 INFO L82 PathProgramCache]: Analyzing trace with hash -645428680, now seen corresponding path program 36 times [2021-06-05 20:33:48,562 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:33:48,562 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [76588520] [2021-06-05 20:33:48,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:33:48,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:33:48,611 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:33:48,611 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:33:48,611 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [76588520] [2021-06-05 20:33:48,611 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [76588520] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:33:48,611 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:33:48,611 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:33:48,611 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2014127809] [2021-06-05 20:33:48,611 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-05 20:33:48,611 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:33:48,612 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-05 20:33:48,612 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:33:48,612 INFO L87 Difference]: Start difference. First operand 1252 states and 3838 transitions. Second operand has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:33:48,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:33:48,740 INFO L93 Difference]: Finished difference Result 1521 states and 4598 transitions. [2021-06-05 20:33:48,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-05 20:33:48,740 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:33:48,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:33:48,742 INFO L225 Difference]: With dead ends: 1521 [2021-06-05 20:33:48,742 INFO L226 Difference]: Without dead ends: 1427 [2021-06-05 20:33:48,756 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 36.9ms TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:33:48,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1427 states. [2021-06-05 20:33:48,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1427 to 1240. [2021-06-05 20:33:48,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1240 states, 1239 states have (on average 3.069410815173527) internal successors, (3803), 1239 states have internal predecessors, (3803), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:33:48,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1240 states to 1240 states and 3803 transitions. [2021-06-05 20:33:48,772 INFO L78 Accepts]: Start accepts. Automaton has 1240 states and 3803 transitions. Word has length 26 [2021-06-05 20:33:48,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:33:48,772 INFO L482 AbstractCegarLoop]: Abstraction has 1240 states and 3803 transitions. [2021-06-05 20:33:48,772 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:33:48,772 INFO L276 IsEmpty]: Start isEmpty. Operand 1240 states and 3803 transitions. [2021-06-05 20:33:48,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:33:48,774 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:33:48,774 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:33:48,774 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2021-06-05 20:33:48,774 INFO L430 AbstractCegarLoop]: === Iteration 39 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:33:48,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:33:48,774 INFO L82 PathProgramCache]: Analyzing trace with hash -1493519084, now seen corresponding path program 37 times [2021-06-05 20:33:48,774 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:33:48,774 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [528088158] [2021-06-05 20:33:48,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:33:48,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:33:48,815 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:33:48,816 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:33:48,816 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [528088158] [2021-06-05 20:33:48,816 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [528088158] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:33:48,816 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:33:48,816 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-05 20:33:48,816 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1619575502] [2021-06-05 20:33:48,816 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:33:48,816 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:33:48,816 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:33:48,816 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:33:48,817 INFO L87 Difference]: Start difference. First operand 1240 states and 3803 transitions. Second operand has 8 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 7 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:33:48,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:33:48,927 INFO L93 Difference]: Finished difference Result 1472 states and 4446 transitions. [2021-06-05 20:33:48,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:33:48,927 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 7 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:33:48,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:33:48,929 INFO L225 Difference]: With dead ends: 1472 [2021-06-05 20:33:48,929 INFO L226 Difference]: Without dead ends: 1393 [2021-06-05 20:33:48,929 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 31.3ms TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:33:48,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1393 states. [2021-06-05 20:33:48,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1393 to 1277. [2021-06-05 20:33:48,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1277 states, 1276 states have (on average 3.0642633228840124) internal successors, (3910), 1276 states have internal predecessors, (3910), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:33:48,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1277 states to 1277 states and 3910 transitions. [2021-06-05 20:33:48,945 INFO L78 Accepts]: Start accepts. Automaton has 1277 states and 3910 transitions. Word has length 26 [2021-06-05 20:33:48,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:33:48,945 INFO L482 AbstractCegarLoop]: Abstraction has 1277 states and 3910 transitions. [2021-06-05 20:33:48,945 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 7 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:33:48,945 INFO L276 IsEmpty]: Start isEmpty. Operand 1277 states and 3910 transitions. [2021-06-05 20:33:48,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:33:48,946 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:33:48,946 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:33:48,947 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2021-06-05 20:33:48,947 INFO L430 AbstractCegarLoop]: === Iteration 40 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:33:48,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:33:48,947 INFO L82 PathProgramCache]: Analyzing trace with hash -624074476, now seen corresponding path program 38 times [2021-06-05 20:33:48,947 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:33:48,947 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [697298320] [2021-06-05 20:33:48,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:33:48,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:33:49,009 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:33:49,009 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:33:49,009 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [697298320] [2021-06-05 20:33:49,009 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [697298320] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:33:49,009 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:33:49,009 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:33:49,009 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1423302587] [2021-06-05 20:33:49,009 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-05 20:33:49,010 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:33:49,010 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-05 20:33:49,010 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:33:49,010 INFO L87 Difference]: Start difference. First operand 1277 states and 3910 transitions. Second operand has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:33:49,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:33:49,160 INFO L93 Difference]: Finished difference Result 1553 states and 4668 transitions. [2021-06-05 20:33:49,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-05 20:33:49,161 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:33:49,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:33:49,162 INFO L225 Difference]: With dead ends: 1553 [2021-06-05 20:33:49,162 INFO L226 Difference]: Without dead ends: 1354 [2021-06-05 20:33:49,162 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 42.0ms TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:33:49,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1354 states. [2021-06-05 20:33:49,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1354 to 1244. [2021-06-05 20:33:49,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1244 states, 1243 states have (on average 3.0402252614641996) internal successors, (3779), 1243 states have internal predecessors, (3779), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:33:49,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1244 states to 1244 states and 3779 transitions. [2021-06-05 20:33:49,177 INFO L78 Accepts]: Start accepts. Automaton has 1244 states and 3779 transitions. Word has length 26 [2021-06-05 20:33:49,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:33:49,178 INFO L482 AbstractCegarLoop]: Abstraction has 1244 states and 3779 transitions. [2021-06-05 20:33:49,178 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:33:49,178 INFO L276 IsEmpty]: Start isEmpty. Operand 1244 states and 3779 transitions. [2021-06-05 20:33:49,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:33:49,180 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:33:49,180 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:33:49,180 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2021-06-05 20:33:49,180 INFO L430 AbstractCegarLoop]: === Iteration 41 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:33:49,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:33:49,180 INFO L82 PathProgramCache]: Analyzing trace with hash 1264028982, now seen corresponding path program 39 times [2021-06-05 20:33:49,180 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:33:49,181 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1300677857] [2021-06-05 20:33:49,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:33:49,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:33:49,229 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:33:49,229 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:33:49,229 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1300677857] [2021-06-05 20:33:49,229 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1300677857] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:33:49,229 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:33:49,229 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:33:49,229 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [367867359] [2021-06-05 20:33:49,229 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-05 20:33:49,229 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:33:49,230 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-05 20:33:49,230 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:33:49,231 INFO L87 Difference]: Start difference. First operand 1244 states and 3779 transitions. Second operand has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:33:49,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:33:49,368 INFO L93 Difference]: Finished difference Result 1430 states and 4297 transitions. [2021-06-05 20:33:49,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-05 20:33:49,368 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:33:49,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:33:49,369 INFO L225 Difference]: With dead ends: 1430 [2021-06-05 20:33:49,370 INFO L226 Difference]: Without dead ends: 1351 [2021-06-05 20:33:49,370 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 36.2ms TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:33:49,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1351 states. [2021-06-05 20:33:49,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1351 to 1255. [2021-06-05 20:33:49,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1255 states, 1254 states have (on average 3.0382775119617227) internal successors, (3810), 1254 states have internal predecessors, (3810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:33:49,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1255 states to 1255 states and 3810 transitions. [2021-06-05 20:33:49,385 INFO L78 Accepts]: Start accepts. Automaton has 1255 states and 3810 transitions. Word has length 26 [2021-06-05 20:33:49,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:33:49,385 INFO L482 AbstractCegarLoop]: Abstraction has 1255 states and 3810 transitions. [2021-06-05 20:33:49,385 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:33:49,385 INFO L276 IsEmpty]: Start isEmpty. Operand 1255 states and 3810 transitions. [2021-06-05 20:33:49,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:33:49,386 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:33:49,386 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:33:49,387 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2021-06-05 20:33:49,387 INFO L430 AbstractCegarLoop]: === Iteration 42 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:33:49,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:33:49,387 INFO L82 PathProgramCache]: Analyzing trace with hash 2133473590, now seen corresponding path program 40 times [2021-06-05 20:33:49,387 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:33:49,387 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1587283199] [2021-06-05 20:33:49,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:33:49,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:33:49,446 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:33:49,447 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:33:49,447 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1587283199] [2021-06-05 20:33:49,447 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1587283199] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:33:49,447 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:33:49,447 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:33:49,447 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [467957301] [2021-06-05 20:33:49,447 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-05 20:33:49,447 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:33:49,448 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-05 20:33:49,448 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:33:49,448 INFO L87 Difference]: Start difference. First operand 1255 states and 3810 transitions. Second operand has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:33:49,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:33:49,580 INFO L93 Difference]: Finished difference Result 1537 states and 4623 transitions. [2021-06-05 20:33:49,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-05 20:33:49,580 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:33:49,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:33:49,582 INFO L225 Difference]: With dead ends: 1537 [2021-06-05 20:33:49,582 INFO L226 Difference]: Without dead ends: 1442 [2021-06-05 20:33:49,582 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 39.4ms TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:33:49,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1442 states. [2021-06-05 20:33:49,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1442 to 1244. [2021-06-05 20:33:49,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1244 states, 1243 states have (on average 3.0378117457763474) internal successors, (3776), 1243 states have internal predecessors, (3776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:33:49,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1244 states to 1244 states and 3776 transitions. [2021-06-05 20:33:49,599 INFO L78 Accepts]: Start accepts. Automaton has 1244 states and 3776 transitions. Word has length 26 [2021-06-05 20:33:49,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:33:49,599 INFO L482 AbstractCegarLoop]: Abstraction has 1244 states and 3776 transitions. [2021-06-05 20:33:49,599 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:33:49,599 INFO L276 IsEmpty]: Start isEmpty. Operand 1244 states and 3776 transitions. [2021-06-05 20:33:49,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:33:49,601 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:33:49,601 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:33:49,601 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2021-06-05 20:33:49,601 INFO L430 AbstractCegarLoop]: === Iteration 43 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:33:49,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:33:49,602 INFO L82 PathProgramCache]: Analyzing trace with hash 9575344, now seen corresponding path program 41 times [2021-06-05 20:33:49,602 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:33:49,602 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [529513156] [2021-06-05 20:33:49,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:33:49,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:33:49,664 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:33:49,664 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:33:49,664 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [529513156] [2021-06-05 20:33:49,664 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [529513156] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:33:49,664 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:33:49,664 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:33:49,664 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [306172666] [2021-06-05 20:33:49,665 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-05 20:33:49,665 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:33:49,665 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-05 20:33:49,665 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:33:49,665 INFO L87 Difference]: Start difference. First operand 1244 states and 3776 transitions. Second operand has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:33:49,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:33:49,810 INFO L93 Difference]: Finished difference Result 1525 states and 4571 transitions. [2021-06-05 20:33:49,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-05 20:33:49,811 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:33:49,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:33:49,812 INFO L225 Difference]: With dead ends: 1525 [2021-06-05 20:33:49,813 INFO L226 Difference]: Without dead ends: 1377 [2021-06-05 20:33:49,813 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 42.0ms TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:33:49,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1377 states. [2021-06-05 20:33:49,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1377 to 1245. [2021-06-05 20:33:49,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1245 states, 1244 states have (on average 3.0434083601286175) internal successors, (3786), 1244 states have internal predecessors, (3786), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:33:49,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1245 states to 1245 states and 3786 transitions. [2021-06-05 20:33:49,828 INFO L78 Accepts]: Start accepts. Automaton has 1245 states and 3786 transitions. Word has length 26 [2021-06-05 20:33:49,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:33:49,828 INFO L482 AbstractCegarLoop]: Abstraction has 1245 states and 3786 transitions. [2021-06-05 20:33:49,828 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:33:49,828 INFO L276 IsEmpty]: Start isEmpty. Operand 1245 states and 3786 transitions. [2021-06-05 20:33:49,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:33:49,829 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:33:49,830 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:33:49,830 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2021-06-05 20:33:49,830 INFO L430 AbstractCegarLoop]: === Iteration 44 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:33:49,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:33:49,830 INFO L82 PathProgramCache]: Analyzing trace with hash -886209770, now seen corresponding path program 42 times [2021-06-05 20:33:49,830 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:33:49,830 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1259315570] [2021-06-05 20:33:49,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:33:49,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:33:49,897 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:33:49,897 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:33:49,897 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1259315570] [2021-06-05 20:33:49,898 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1259315570] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:33:49,898 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:33:49,898 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:33:49,898 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1834180683] [2021-06-05 20:33:49,898 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-05 20:33:49,898 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:33:49,898 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-05 20:33:49,898 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:33:49,898 INFO L87 Difference]: Start difference. First operand 1245 states and 3786 transitions. Second operand has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:33:50,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:33:50,043 INFO L93 Difference]: Finished difference Result 1531 states and 4573 transitions. [2021-06-05 20:33:50,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-05 20:33:50,043 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:33:50,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:33:50,045 INFO L225 Difference]: With dead ends: 1531 [2021-06-05 20:33:50,045 INFO L226 Difference]: Without dead ends: 1401 [2021-06-05 20:33:50,045 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 39.4ms TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:33:50,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1401 states. [2021-06-05 20:33:50,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1401 to 1297. [2021-06-05 20:33:50,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1297 states, 1296 states have (on average 3.029320987654321) internal successors, (3926), 1296 states have internal predecessors, (3926), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:33:50,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1297 states to 1297 states and 3926 transitions. [2021-06-05 20:33:50,062 INFO L78 Accepts]: Start accepts. Automaton has 1297 states and 3926 transitions. Word has length 26 [2021-06-05 20:33:50,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:33:50,063 INFO L482 AbstractCegarLoop]: Abstraction has 1297 states and 3926 transitions. [2021-06-05 20:33:50,063 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:33:50,063 INFO L276 IsEmpty]: Start isEmpty. Operand 1297 states and 3926 transitions. [2021-06-05 20:33:50,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:33:50,064 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:33:50,064 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:33:50,064 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2021-06-05 20:33:50,064 INFO L430 AbstractCegarLoop]: === Iteration 45 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:33:50,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:33:50,065 INFO L82 PathProgramCache]: Analyzing trace with hash -1745794764, now seen corresponding path program 43 times [2021-06-05 20:33:50,065 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:33:50,065 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1577739843] [2021-06-05 20:33:50,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:33:50,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:33:50,122 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:33:50,123 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:33:50,123 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1577739843] [2021-06-05 20:33:50,123 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1577739843] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:33:50,123 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:33:50,123 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 20:33:50,123 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1371042437] [2021-06-05 20:33:50,123 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 20:33:50,123 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:33:50,123 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 20:33:50,123 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:33:50,123 INFO L87 Difference]: Start difference. First operand 1297 states and 3926 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:33:50,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:33:50,287 INFO L93 Difference]: Finished difference Result 1518 states and 4526 transitions. [2021-06-05 20:33:50,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 20:33:50,288 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:33:50,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:33:50,289 INFO L225 Difference]: With dead ends: 1518 [2021-06-05 20:33:50,289 INFO L226 Difference]: Without dead ends: 1395 [2021-06-05 20:33:50,289 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 45.6ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:33:50,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1395 states. [2021-06-05 20:33:50,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1395 to 1271. [2021-06-05 20:33:50,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1271 states, 1270 states have (on average 3.0393700787401574) internal successors, (3860), 1270 states have internal predecessors, (3860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:33:50,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1271 states to 1271 states and 3860 transitions. [2021-06-05 20:33:50,319 INFO L78 Accepts]: Start accepts. Automaton has 1271 states and 3860 transitions. Word has length 26 [2021-06-05 20:33:50,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:33:50,319 INFO L482 AbstractCegarLoop]: Abstraction has 1271 states and 3860 transitions. [2021-06-05 20:33:50,319 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:33:50,319 INFO L276 IsEmpty]: Start isEmpty. Operand 1271 states and 3860 transitions. [2021-06-05 20:33:50,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:33:50,321 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:33:50,321 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:33:50,321 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2021-06-05 20:33:50,321 INFO L430 AbstractCegarLoop]: === Iteration 46 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:33:50,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:33:50,321 INFO L82 PathProgramCache]: Analyzing trace with hash -1255815848, now seen corresponding path program 44 times [2021-06-05 20:33:50,321 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:33:50,321 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [532034753] [2021-06-05 20:33:50,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:33:50,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:33:50,367 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:33:50,367 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:33:50,367 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [532034753] [2021-06-05 20:33:50,367 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [532034753] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:33:50,367 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:33:50,367 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:33:50,367 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [706576796] [2021-06-05 20:33:50,368 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-05 20:33:50,368 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:33:50,368 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-05 20:33:50,368 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:33:50,369 INFO L87 Difference]: Start difference. First operand 1271 states and 3860 transitions. Second operand has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:33:50,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:33:50,516 INFO L93 Difference]: Finished difference Result 1636 states and 4901 transitions. [2021-06-05 20:33:50,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-05 20:33:50,516 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:33:50,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:33:50,518 INFO L225 Difference]: With dead ends: 1636 [2021-06-05 20:33:50,518 INFO L226 Difference]: Without dead ends: 1496 [2021-06-05 20:33:50,518 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 36.2ms TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:33:50,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1496 states. [2021-06-05 20:33:50,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1496 to 1331. [2021-06-05 20:33:50,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1331 states, 1330 states have (on average 3.03609022556391) internal successors, (4038), 1330 states have internal predecessors, (4038), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:33:50,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1331 states to 1331 states and 4038 transitions. [2021-06-05 20:33:50,534 INFO L78 Accepts]: Start accepts. Automaton has 1331 states and 4038 transitions. Word has length 26 [2021-06-05 20:33:50,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:33:50,534 INFO L482 AbstractCegarLoop]: Abstraction has 1331 states and 4038 transitions. [2021-06-05 20:33:50,534 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:33:50,534 INFO L276 IsEmpty]: Start isEmpty. Operand 1331 states and 4038 transitions. [2021-06-05 20:33:50,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:33:50,535 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:33:50,535 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:33:50,536 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2021-06-05 20:33:50,536 INFO L430 AbstractCegarLoop]: === Iteration 47 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:33:50,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:33:50,536 INFO L82 PathProgramCache]: Analyzing trace with hash -331772878, now seen corresponding path program 45 times [2021-06-05 20:33:50,536 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:33:50,536 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1315003073] [2021-06-05 20:33:50,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:33:50,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:33:50,603 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:33:50,603 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:33:50,603 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1315003073] [2021-06-05 20:33:50,603 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1315003073] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:33:50,603 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:33:50,603 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 20:33:50,603 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1606865608] [2021-06-05 20:33:50,603 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 20:33:50,603 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:33:50,603 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 20:33:50,604 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:33:50,604 INFO L87 Difference]: Start difference. First operand 1331 states and 4038 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:33:50,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:33:50,767 INFO L93 Difference]: Finished difference Result 1514 states and 4527 transitions. [2021-06-05 20:33:50,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 20:33:50,768 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:33:50,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:33:50,769 INFO L225 Difference]: With dead ends: 1514 [2021-06-05 20:33:50,769 INFO L226 Difference]: Without dead ends: 1403 [2021-06-05 20:33:50,770 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 52.5ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:33:50,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1403 states. [2021-06-05 20:33:50,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1403 to 1295. [2021-06-05 20:33:50,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1295 states, 1294 states have (on average 3.030139103554869) internal successors, (3921), 1294 states have internal predecessors, (3921), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:33:50,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1295 states to 1295 states and 3921 transitions. [2021-06-05 20:33:50,785 INFO L78 Accepts]: Start accepts. Automaton has 1295 states and 3921 transitions. Word has length 26 [2021-06-05 20:33:50,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:33:50,785 INFO L482 AbstractCegarLoop]: Abstraction has 1295 states and 3921 transitions. [2021-06-05 20:33:50,785 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:33:50,785 INFO L276 IsEmpty]: Start isEmpty. Operand 1295 states and 3921 transitions. [2021-06-05 20:33:50,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:33:50,787 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:33:50,787 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:33:50,787 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2021-06-05 20:33:50,787 INFO L430 AbstractCegarLoop]: === Iteration 48 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:33:50,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:33:50,787 INFO L82 PathProgramCache]: Analyzing trace with hash 1426900628, now seen corresponding path program 46 times [2021-06-05 20:33:50,787 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:33:50,787 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2008646990] [2021-06-05 20:33:50,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:33:50,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:33:50,847 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:33:50,848 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:33:50,848 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2008646990] [2021-06-05 20:33:50,848 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2008646990] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:33:50,848 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:33:50,848 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 20:33:50,848 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [96906039] [2021-06-05 20:33:50,848 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 20:33:50,848 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:33:50,848 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 20:33:50,848 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:33:50,849 INFO L87 Difference]: Start difference. First operand 1295 states and 3921 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:33:51,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:33:51,024 INFO L93 Difference]: Finished difference Result 1453 states and 4342 transitions. [2021-06-05 20:33:51,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 20:33:51,024 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:33:51,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:33:51,025 INFO L225 Difference]: With dead ends: 1453 [2021-06-05 20:33:51,025 INFO L226 Difference]: Without dead ends: 1374 [2021-06-05 20:33:51,026 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 49.2ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:33:51,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1374 states. [2021-06-05 20:33:51,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1374 to 1319. [2021-06-05 20:33:51,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1319 states, 1318 states have (on average 3.030349013657056) internal successors, (3994), 1318 states have internal predecessors, (3994), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:33:51,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1319 states to 1319 states and 3994 transitions. [2021-06-05 20:33:51,041 INFO L78 Accepts]: Start accepts. Automaton has 1319 states and 3994 transitions. Word has length 26 [2021-06-05 20:33:51,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:33:51,041 INFO L482 AbstractCegarLoop]: Abstraction has 1319 states and 3994 transitions. [2021-06-05 20:33:51,042 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:33:51,042 INFO L276 IsEmpty]: Start isEmpty. Operand 1319 states and 3994 transitions. [2021-06-05 20:33:51,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:33:51,043 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:33:51,043 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:33:51,043 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2021-06-05 20:33:51,043 INFO L430 AbstractCegarLoop]: === Iteration 49 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:33:51,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:33:51,044 INFO L82 PathProgramCache]: Analyzing trace with hash -1998622060, now seen corresponding path program 47 times [2021-06-05 20:33:51,044 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:33:51,044 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [923083739] [2021-06-05 20:33:51,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:33:51,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:33:51,104 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:33:51,104 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:33:51,104 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [923083739] [2021-06-05 20:33:51,104 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [923083739] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:33:51,105 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:33:51,105 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 20:33:51,105 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [993588639] [2021-06-05 20:33:51,105 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 20:33:51,105 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:33:51,105 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 20:33:51,105 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:33:51,105 INFO L87 Difference]: Start difference. First operand 1319 states and 3994 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:33:51,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:33:51,271 INFO L93 Difference]: Finished difference Result 1550 states and 4630 transitions. [2021-06-05 20:33:51,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 20:33:51,271 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:33:51,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:33:51,273 INFO L225 Difference]: With dead ends: 1550 [2021-06-05 20:33:51,273 INFO L226 Difference]: Without dead ends: 1455 [2021-06-05 20:33:51,273 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 50.0ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:33:51,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1455 states. [2021-06-05 20:33:51,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1455 to 1323. [2021-06-05 20:33:51,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1323 states, 1322 states have (on average 3.0310136157337366) internal successors, (4007), 1322 states have internal predecessors, (4007), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:33:51,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1323 states to 1323 states and 4007 transitions. [2021-06-05 20:33:51,289 INFO L78 Accepts]: Start accepts. Automaton has 1323 states and 4007 transitions. Word has length 26 [2021-06-05 20:33:51,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:33:51,289 INFO L482 AbstractCegarLoop]: Abstraction has 1323 states and 4007 transitions. [2021-06-05 20:33:51,289 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:33:51,289 INFO L276 IsEmpty]: Start isEmpty. Operand 1323 states and 4007 transitions. [2021-06-05 20:33:51,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:33:51,290 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:33:51,290 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:33:51,291 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2021-06-05 20:33:51,291 INFO L430 AbstractCegarLoop]: === Iteration 50 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:33:51,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:33:51,291 INFO L82 PathProgramCache]: Analyzing trace with hash 827634006, now seen corresponding path program 48 times [2021-06-05 20:33:51,291 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:33:51,291 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [464441741] [2021-06-05 20:33:51,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:33:51,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:33:51,362 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:33:51,362 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:33:51,362 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [464441741] [2021-06-05 20:33:51,363 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [464441741] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:33:51,363 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:33:51,363 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 20:33:51,363 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1853124502] [2021-06-05 20:33:51,363 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 20:33:51,363 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:33:51,363 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 20:33:51,363 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:33:51,363 INFO L87 Difference]: Start difference. First operand 1323 states and 4007 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:33:51,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:33:51,530 INFO L93 Difference]: Finished difference Result 1551 states and 4630 transitions. [2021-06-05 20:33:51,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 20:33:51,530 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:33:51,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:33:51,532 INFO L225 Difference]: With dead ends: 1551 [2021-06-05 20:33:51,532 INFO L226 Difference]: Without dead ends: 1472 [2021-06-05 20:33:51,532 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 57.1ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:33:51,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1472 states. [2021-06-05 20:33:51,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1472 to 1327. [2021-06-05 20:33:51,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1327 states, 1326 states have (on average 3.0279034690799396) internal successors, (4015), 1326 states have internal predecessors, (4015), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:33:51,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1327 states to 1327 states and 4015 transitions. [2021-06-05 20:33:51,548 INFO L78 Accepts]: Start accepts. Automaton has 1327 states and 4015 transitions. Word has length 26 [2021-06-05 20:33:51,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:33:51,548 INFO L482 AbstractCegarLoop]: Abstraction has 1327 states and 4015 transitions. [2021-06-05 20:33:51,548 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:33:51,548 INFO L276 IsEmpty]: Start isEmpty. Operand 1327 states and 4015 transitions. [2021-06-05 20:33:51,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:33:51,549 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:33:51,549 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:33:51,550 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2021-06-05 20:33:51,550 INFO L430 AbstractCegarLoop]: === Iteration 51 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:33:51,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:33:51,550 INFO L82 PathProgramCache]: Analyzing trace with hash 254236730, now seen corresponding path program 49 times [2021-06-05 20:33:51,550 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:33:51,550 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1533860832] [2021-06-05 20:33:51,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:33:51,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:33:51,607 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:33:51,607 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:33:51,607 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1533860832] [2021-06-05 20:33:51,607 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1533860832] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:33:51,607 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:33:51,607 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 20:33:51,607 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1920677004] [2021-06-05 20:33:51,608 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 20:33:51,608 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:33:51,608 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 20:33:51,608 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:33:51,608 INFO L87 Difference]: Start difference. First operand 1327 states and 4015 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:33:51,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:33:51,794 INFO L93 Difference]: Finished difference Result 1593 states and 4759 transitions. [2021-06-05 20:33:51,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 20:33:51,795 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:33:51,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:33:51,796 INFO L225 Difference]: With dead ends: 1593 [2021-06-05 20:33:51,796 INFO L226 Difference]: Without dead ends: 1491 [2021-06-05 20:33:51,796 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 46.4ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:33:51,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1491 states. [2021-06-05 20:33:51,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1491 to 1313. [2021-06-05 20:33:51,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1313 states, 1312 states have (on average 3.0373475609756095) internal successors, (3985), 1312 states have internal predecessors, (3985), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:33:51,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1313 states to 1313 states and 3985 transitions. [2021-06-05 20:33:51,811 INFO L78 Accepts]: Start accepts. Automaton has 1313 states and 3985 transitions. Word has length 26 [2021-06-05 20:33:51,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:33:51,811 INFO L482 AbstractCegarLoop]: Abstraction has 1313 states and 3985 transitions. [2021-06-05 20:33:51,812 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:33:51,812 INFO L276 IsEmpty]: Start isEmpty. Operand 1313 states and 3985 transitions. [2021-06-05 20:33:51,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:33:51,813 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:33:51,813 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:33:51,813 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2021-06-05 20:33:51,813 INFO L430 AbstractCegarLoop]: === Iteration 52 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:33:51,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:33:51,813 INFO L82 PathProgramCache]: Analyzing trace with hash -2060169480, now seen corresponding path program 50 times [2021-06-05 20:33:51,813 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:33:51,813 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [278843085] [2021-06-05 20:33:51,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:33:51,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:33:51,861 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:33:51,862 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:33:51,862 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [278843085] [2021-06-05 20:33:51,862 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [278843085] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:33:51,862 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:33:51,862 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:33:51,862 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1601786722] [2021-06-05 20:33:51,862 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-05 20:33:51,862 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:33:51,862 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-05 20:33:51,862 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:33:51,862 INFO L87 Difference]: Start difference. First operand 1313 states and 3985 transitions. Second operand has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:33:51,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:33:51,992 INFO L93 Difference]: Finished difference Result 1603 states and 4787 transitions. [2021-06-05 20:33:51,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-05 20:33:51,992 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:33:51,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:33:51,994 INFO L225 Difference]: With dead ends: 1603 [2021-06-05 20:33:51,994 INFO L226 Difference]: Without dead ends: 1453 [2021-06-05 20:33:51,994 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 38.1ms TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:33:51,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1453 states. [2021-06-05 20:33:52,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1453 to 1339. [2021-06-05 20:33:52,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1339 states, 1338 states have (on average 3.0336322869955157) internal successors, (4059), 1338 states have internal predecessors, (4059), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:33:52,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1339 states to 1339 states and 4059 transitions. [2021-06-05 20:33:52,009 INFO L78 Accepts]: Start accepts. Automaton has 1339 states and 4059 transitions. Word has length 26 [2021-06-05 20:33:52,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:33:52,009 INFO L482 AbstractCegarLoop]: Abstraction has 1339 states and 4059 transitions. [2021-06-05 20:33:52,009 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:33:52,009 INFO L276 IsEmpty]: Start isEmpty. Operand 1339 states and 4059 transitions. [2021-06-05 20:33:52,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:33:52,010 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:33:52,011 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:33:52,011 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2021-06-05 20:33:52,011 INFO L430 AbstractCegarLoop]: === Iteration 53 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:33:52,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:33:52,011 INFO L82 PathProgramCache]: Analyzing trace with hash 1375212822, now seen corresponding path program 51 times [2021-06-05 20:33:52,011 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:33:52,011 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [331837349] [2021-06-05 20:33:52,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:33:52,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:33:52,078 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:33:52,079 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:33:52,079 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [331837349] [2021-06-05 20:33:52,079 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [331837349] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:33:52,079 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:33:52,079 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 20:33:52,079 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [701691804] [2021-06-05 20:33:52,079 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 20:33:52,079 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:33:52,079 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 20:33:52,079 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:33:52,079 INFO L87 Difference]: Start difference. First operand 1339 states and 4059 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:33:52,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:33:52,263 INFO L93 Difference]: Finished difference Result 1564 states and 4681 transitions. [2021-06-05 20:33:52,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 20:33:52,264 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:33:52,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:33:52,266 INFO L225 Difference]: With dead ends: 1564 [2021-06-05 20:33:52,266 INFO L226 Difference]: Without dead ends: 1432 [2021-06-05 20:33:52,266 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 48.9ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:33:52,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1432 states. [2021-06-05 20:33:52,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1432 to 1313. [2021-06-05 20:33:52,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1313 states, 1312 states have (on average 3.041920731707317) internal successors, (3991), 1312 states have internal predecessors, (3991), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:33:52,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1313 states to 1313 states and 3991 transitions. [2021-06-05 20:33:52,283 INFO L78 Accepts]: Start accepts. Automaton has 1313 states and 3991 transitions. Word has length 26 [2021-06-05 20:33:52,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:33:52,283 INFO L482 AbstractCegarLoop]: Abstraction has 1313 states and 3991 transitions. [2021-06-05 20:33:52,283 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:33:52,283 INFO L276 IsEmpty]: Start isEmpty. Operand 1313 states and 3991 transitions. [2021-06-05 20:33:52,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:33:52,284 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:33:52,284 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:33:52,284 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2021-06-05 20:33:52,284 INFO L430 AbstractCegarLoop]: === Iteration 54 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:33:52,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:33:52,285 INFO L82 PathProgramCache]: Analyzing trace with hash 2016989272, now seen corresponding path program 52 times [2021-06-05 20:33:52,285 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:33:52,285 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1577781284] [2021-06-05 20:33:52,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:33:52,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:33:52,336 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:33:52,336 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:33:52,336 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1577781284] [2021-06-05 20:33:52,336 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1577781284] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:33:52,336 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:33:52,336 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:33:52,336 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [561163859] [2021-06-05 20:33:52,336 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-05 20:33:52,336 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:33:52,336 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-05 20:33:52,337 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:33:52,337 INFO L87 Difference]: Start difference. First operand 1313 states and 3991 transitions. Second operand has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:33:52,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:33:52,474 INFO L93 Difference]: Finished difference Result 1533 states and 4603 transitions. [2021-06-05 20:33:52,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-05 20:33:52,475 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:33:52,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:33:52,476 INFO L225 Difference]: With dead ends: 1533 [2021-06-05 20:33:52,476 INFO L226 Difference]: Without dead ends: 1436 [2021-06-05 20:33:52,476 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 40.8ms TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:33:52,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1436 states. [2021-06-05 20:33:52,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1436 to 1330. [2021-06-05 20:33:52,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1330 states, 1329 states have (on average 3.0413844996237773) internal successors, (4042), 1329 states have internal predecessors, (4042), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:33:52,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1330 states to 1330 states and 4042 transitions. [2021-06-05 20:33:52,492 INFO L78 Accepts]: Start accepts. Automaton has 1330 states and 4042 transitions. Word has length 26 [2021-06-05 20:33:52,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:33:52,492 INFO L482 AbstractCegarLoop]: Abstraction has 1330 states and 4042 transitions. [2021-06-05 20:33:52,492 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:33:52,492 INFO L276 IsEmpty]: Start isEmpty. Operand 1330 states and 4042 transitions. [2021-06-05 20:33:52,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:33:52,494 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:33:52,494 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:33:52,494 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2021-06-05 20:33:52,494 INFO L430 AbstractCegarLoop]: === Iteration 55 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:33:52,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:33:52,494 INFO L82 PathProgramCache]: Analyzing trace with hash 1108738136, now seen corresponding path program 53 times [2021-06-05 20:33:52,494 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:33:52,494 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1826661530] [2021-06-05 20:33:52,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:33:52,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:33:52,553 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:33:52,553 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:33:52,553 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1826661530] [2021-06-05 20:33:52,553 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1826661530] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:33:52,553 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:33:52,553 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 20:33:52,553 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1618793793] [2021-06-05 20:33:52,553 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 20:33:52,553 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:33:52,554 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 20:33:52,554 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:33:52,554 INFO L87 Difference]: Start difference. First operand 1330 states and 4042 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:33:52,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:33:52,729 INFO L93 Difference]: Finished difference Result 1540 states and 4628 transitions. [2021-06-05 20:33:52,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 20:33:52,730 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:33:52,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:33:52,732 INFO L225 Difference]: With dead ends: 1540 [2021-06-05 20:33:52,732 INFO L226 Difference]: Without dead ends: 1461 [2021-06-05 20:33:52,732 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 45.0ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:33:52,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1461 states. [2021-06-05 20:33:52,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1461 to 1342. [2021-06-05 20:33:52,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1342 states, 1341 states have (on average 3.0395227442207307) internal successors, (4076), 1341 states have internal predecessors, (4076), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:33:52,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1342 states to 1342 states and 4076 transitions. [2021-06-05 20:33:52,749 INFO L78 Accepts]: Start accepts. Automaton has 1342 states and 4076 transitions. Word has length 26 [2021-06-05 20:33:52,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:33:52,749 INFO L482 AbstractCegarLoop]: Abstraction has 1342 states and 4076 transitions. [2021-06-05 20:33:52,749 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:33:52,749 INFO L276 IsEmpty]: Start isEmpty. Operand 1342 states and 4076 transitions. [2021-06-05 20:33:52,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:33:52,750 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:33:52,750 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:33:52,750 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2021-06-05 20:33:52,751 INFO L430 AbstractCegarLoop]: === Iteration 56 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:33:52,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:33:52,751 INFO L82 PathProgramCache]: Analyzing trace with hash 1978182744, now seen corresponding path program 54 times [2021-06-05 20:33:52,751 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:33:52,751 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1067925226] [2021-06-05 20:33:52,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:33:52,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:33:52,813 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:33:52,813 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:33:52,813 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1067925226] [2021-06-05 20:33:52,813 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1067925226] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:33:52,814 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:33:52,814 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 20:33:52,814 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1550386190] [2021-06-05 20:33:52,814 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 20:33:52,814 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:33:52,814 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 20:33:52,815 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:33:52,815 INFO L87 Difference]: Start difference. First operand 1342 states and 4076 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:33:52,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:33:52,977 INFO L93 Difference]: Finished difference Result 1587 states and 4770 transitions. [2021-06-05 20:33:52,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 20:33:52,977 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:33:52,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:33:52,979 INFO L225 Difference]: With dead ends: 1587 [2021-06-05 20:33:52,979 INFO L226 Difference]: Without dead ends: 1474 [2021-06-05 20:33:52,979 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 49.3ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:33:52,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1474 states. [2021-06-05 20:33:52,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1474 to 1340. [2021-06-05 20:33:52,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1340 states, 1339 states have (on average 3.0403286034353996) internal successors, (4071), 1339 states have internal predecessors, (4071), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:33:52,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1340 states to 1340 states and 4071 transitions. [2021-06-05 20:33:52,995 INFO L78 Accepts]: Start accepts. Automaton has 1340 states and 4071 transitions. Word has length 26 [2021-06-05 20:33:52,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:33:52,995 INFO L482 AbstractCegarLoop]: Abstraction has 1340 states and 4071 transitions. [2021-06-05 20:33:52,995 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:33:52,995 INFO L276 IsEmpty]: Start isEmpty. Operand 1340 states and 4071 transitions. [2021-06-05 20:33:52,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:33:52,996 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:33:52,996 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:33:52,996 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2021-06-05 20:33:52,996 INFO L430 AbstractCegarLoop]: === Iteration 57 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:33:52,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:33:52,997 INFO L82 PathProgramCache]: Analyzing trace with hash 2029314102, now seen corresponding path program 55 times [2021-06-05 20:33:52,997 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:33:52,997 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1597224310] [2021-06-05 20:33:52,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:33:52,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:33:53,058 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:33:53,058 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:33:53,058 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1597224310] [2021-06-05 20:33:53,058 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1597224310] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:33:53,058 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:33:53,058 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 20:33:53,058 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [773281138] [2021-06-05 20:33:53,058 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 20:33:53,059 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:33:53,059 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 20:33:53,059 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:33:53,059 INFO L87 Difference]: Start difference. First operand 1340 states and 4071 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:33:53,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:33:53,244 INFO L93 Difference]: Finished difference Result 1550 states and 4655 transitions. [2021-06-05 20:33:53,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 20:33:53,244 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:33:53,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:33:53,246 INFO L225 Difference]: With dead ends: 1550 [2021-06-05 20:33:53,246 INFO L226 Difference]: Without dead ends: 1456 [2021-06-05 20:33:53,246 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 45.4ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:33:53,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1456 states. [2021-06-05 20:33:53,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1456 to 1323. [2021-06-05 20:33:53,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1323 states, 1322 states have (on average 3.042360060514372) internal successors, (4022), 1322 states have internal predecessors, (4022), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:33:53,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1323 states to 1323 states and 4022 transitions. [2021-06-05 20:33:53,261 INFO L78 Accepts]: Start accepts. Automaton has 1323 states and 4022 transitions. Word has length 26 [2021-06-05 20:33:53,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:33:53,261 INFO L482 AbstractCegarLoop]: Abstraction has 1323 states and 4022 transitions. [2021-06-05 20:33:53,261 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:33:53,261 INFO L276 IsEmpty]: Start isEmpty. Operand 1323 states and 4022 transitions. [2021-06-05 20:33:53,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:33:53,263 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:33:53,263 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:33:53,263 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2021-06-05 20:33:53,263 INFO L430 AbstractCegarLoop]: === Iteration 58 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:33:53,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:33:53,263 INFO L82 PathProgramCache]: Analyzing trace with hash 1520376882, now seen corresponding path program 56 times [2021-06-05 20:33:53,263 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:33:53,263 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1619316319] [2021-06-05 20:33:53,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:33:53,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:33:53,313 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:33:53,313 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:33:53,313 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1619316319] [2021-06-05 20:33:53,313 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1619316319] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:33:53,313 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:33:53,314 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:33:53,314 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [639967981] [2021-06-05 20:33:53,314 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-05 20:33:53,314 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:33:53,314 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-05 20:33:53,314 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:33:53,314 INFO L87 Difference]: Start difference. First operand 1323 states and 4022 transitions. Second operand has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:33:53,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:33:53,460 INFO L93 Difference]: Finished difference Result 1614 states and 4865 transitions. [2021-06-05 20:33:53,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-05 20:33:53,461 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:33:53,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:33:53,463 INFO L225 Difference]: With dead ends: 1614 [2021-06-05 20:33:53,463 INFO L226 Difference]: Without dead ends: 1535 [2021-06-05 20:33:53,463 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 40.4ms TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:33:53,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1535 states. [2021-06-05 20:33:53,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1535 to 1344. [2021-06-05 20:33:53,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1344 states, 1343 states have (on average 3.040953090096798) internal successors, (4084), 1343 states have internal predecessors, (4084), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:33:53,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1344 states to 1344 states and 4084 transitions. [2021-06-05 20:33:53,480 INFO L78 Accepts]: Start accepts. Automaton has 1344 states and 4084 transitions. Word has length 26 [2021-06-05 20:33:53,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:33:53,480 INFO L482 AbstractCegarLoop]: Abstraction has 1344 states and 4084 transitions. [2021-06-05 20:33:53,480 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:33:53,480 INFO L276 IsEmpty]: Start isEmpty. Operand 1344 states and 4084 transitions. [2021-06-05 20:33:53,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:33:53,482 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:33:53,482 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:33:53,482 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2021-06-05 20:33:53,482 INFO L430 AbstractCegarLoop]: === Iteration 59 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:33:53,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:33:53,482 INFO L82 PathProgramCache]: Analyzing trace with hash -1551902662, now seen corresponding path program 57 times [2021-06-05 20:33:53,482 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:33:53,482 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [166874629] [2021-06-05 20:33:53,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:33:53,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:33:53,553 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:33:53,553 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:33:53,553 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [166874629] [2021-06-05 20:33:53,553 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [166874629] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:33:53,553 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:33:53,553 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:33:53,553 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1097117034] [2021-06-05 20:33:53,553 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-05 20:33:53,553 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:33:53,554 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-05 20:33:53,554 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:33:53,554 INFO L87 Difference]: Start difference. First operand 1344 states and 4084 transitions. Second operand has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:33:53,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:33:53,695 INFO L93 Difference]: Finished difference Result 1680 states and 5059 transitions. [2021-06-05 20:33:53,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-05 20:33:53,695 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:33:53,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:33:53,697 INFO L225 Difference]: With dead ends: 1680 [2021-06-05 20:33:53,697 INFO L226 Difference]: Without dead ends: 1585 [2021-06-05 20:33:53,697 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 60.2ms TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:33:53,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1585 states. [2021-06-05 20:33:53,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1585 to 1362. [2021-06-05 20:33:53,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1362 states, 1361 states have (on average 3.044819985304923) internal successors, (4144), 1361 states have internal predecessors, (4144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:33:53,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1362 states to 1362 states and 4144 transitions. [2021-06-05 20:33:53,713 INFO L78 Accepts]: Start accepts. Automaton has 1362 states and 4144 transitions. Word has length 26 [2021-06-05 20:33:53,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:33:53,713 INFO L482 AbstractCegarLoop]: Abstraction has 1362 states and 4144 transitions. [2021-06-05 20:33:53,713 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:33:53,713 INFO L276 IsEmpty]: Start isEmpty. Operand 1362 states and 4144 transitions. [2021-06-05 20:33:53,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:33:53,715 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:33:53,715 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:33:53,715 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2021-06-05 20:33:53,715 INFO L430 AbstractCegarLoop]: === Iteration 60 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:33:53,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:33:53,715 INFO L82 PathProgramCache]: Analyzing trace with hash -48551660, now seen corresponding path program 58 times [2021-06-05 20:33:53,715 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:33:53,715 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1044134893] [2021-06-05 20:33:53,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:33:53,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:33:53,765 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:33:53,765 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:33:53,765 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1044134893] [2021-06-05 20:33:53,765 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1044134893] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:33:53,765 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:33:53,765 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:33:53,765 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1391084666] [2021-06-05 20:33:53,765 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-05 20:33:53,765 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:33:53,765 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-05 20:33:53,765 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:33:53,766 INFO L87 Difference]: Start difference. First operand 1362 states and 4144 transitions. Second operand has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:33:53,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:33:53,898 INFO L93 Difference]: Finished difference Result 1581 states and 4769 transitions. [2021-06-05 20:33:53,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-05 20:33:53,898 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:33:53,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:33:53,900 INFO L225 Difference]: With dead ends: 1581 [2021-06-05 20:33:53,900 INFO L226 Difference]: Without dead ends: 1490 [2021-06-05 20:33:53,901 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 38.8ms TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:33:53,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1490 states. [2021-06-05 20:33:53,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1490 to 1345. [2021-06-05 20:33:53,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1345 states, 1344 states have (on average 3.044642857142857) internal successors, (4092), 1344 states have internal predecessors, (4092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:33:53,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1345 states to 1345 states and 4092 transitions. [2021-06-05 20:33:53,917 INFO L78 Accepts]: Start accepts. Automaton has 1345 states and 4092 transitions. Word has length 26 [2021-06-05 20:33:53,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:33:53,917 INFO L482 AbstractCegarLoop]: Abstraction has 1345 states and 4092 transitions. [2021-06-05 20:33:53,917 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:33:53,917 INFO L276 IsEmpty]: Start isEmpty. Operand 1345 states and 4092 transitions. [2021-06-05 20:33:53,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:33:53,919 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:33:53,919 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:33:53,919 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2021-06-05 20:33:53,919 INFO L430 AbstractCegarLoop]: === Iteration 61 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:33:53,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:33:53,919 INFO L82 PathProgramCache]: Analyzing trace with hash 205133460, now seen corresponding path program 59 times [2021-06-05 20:33:53,919 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:33:53,919 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1211842164] [2021-06-05 20:33:53,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:33:53,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:33:53,978 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:33:53,978 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:33:53,978 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1211842164] [2021-06-05 20:33:53,978 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1211842164] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:33:53,978 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:33:53,978 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 20:33:53,979 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1987376738] [2021-06-05 20:33:53,979 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 20:33:53,979 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:33:53,979 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 20:33:53,979 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:33:53,979 INFO L87 Difference]: Start difference. First operand 1345 states and 4092 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:33:54,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:33:54,159 INFO L93 Difference]: Finished difference Result 1471 states and 4427 transitions. [2021-06-05 20:33:54,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 20:33:54,159 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:33:54,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:33:54,161 INFO L225 Difference]: With dead ends: 1471 [2021-06-05 20:33:54,161 INFO L226 Difference]: Without dead ends: 1392 [2021-06-05 20:33:54,161 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 48.3ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:33:54,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1392 states. [2021-06-05 20:33:54,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1392 to 1357. [2021-06-05 20:33:54,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1357 states, 1356 states have (on average 3.0427728613569323) internal successors, (4126), 1356 states have internal predecessors, (4126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:33:54,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1357 states to 1357 states and 4126 transitions. [2021-06-05 20:33:54,176 INFO L78 Accepts]: Start accepts. Automaton has 1357 states and 4126 transitions. Word has length 26 [2021-06-05 20:33:54,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:33:54,177 INFO L482 AbstractCegarLoop]: Abstraction has 1357 states and 4126 transitions. [2021-06-05 20:33:54,177 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:33:54,177 INFO L276 IsEmpty]: Start isEmpty. Operand 1357 states and 4126 transitions. [2021-06-05 20:33:54,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:33:54,178 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:33:54,178 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:33:54,178 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2021-06-05 20:33:54,178 INFO L430 AbstractCegarLoop]: === Iteration 62 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:33:54,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:33:54,178 INFO L82 PathProgramCache]: Analyzing trace with hash 1074578068, now seen corresponding path program 60 times [2021-06-05 20:33:54,179 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:33:54,179 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1126315458] [2021-06-05 20:33:54,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:33:54,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:33:54,245 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:33:54,246 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:33:54,246 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1126315458] [2021-06-05 20:33:54,246 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1126315458] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:33:54,246 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:33:54,246 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 20:33:54,246 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1637863254] [2021-06-05 20:33:54,246 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 20:33:54,246 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:33:54,246 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 20:33:54,246 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:33:54,246 INFO L87 Difference]: Start difference. First operand 1357 states and 4126 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:33:54,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:33:54,415 INFO L93 Difference]: Finished difference Result 1521 states and 4567 transitions. [2021-06-05 20:33:54,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 20:33:54,415 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:33:54,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:33:54,417 INFO L225 Difference]: With dead ends: 1521 [2021-06-05 20:33:54,417 INFO L226 Difference]: Without dead ends: 1426 [2021-06-05 20:33:54,417 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 50.1ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:33:54,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1426 states. [2021-06-05 20:33:54,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1426 to 1365. [2021-06-05 20:33:54,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1365 states, 1364 states have (on average 3.0454545454545454) internal successors, (4154), 1364 states have internal predecessors, (4154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:33:54,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1365 states to 1365 states and 4154 transitions. [2021-06-05 20:33:54,432 INFO L78 Accepts]: Start accepts. Automaton has 1365 states and 4154 transitions. Word has length 26 [2021-06-05 20:33:54,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:33:54,432 INFO L482 AbstractCegarLoop]: Abstraction has 1365 states and 4154 transitions. [2021-06-05 20:33:54,432 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:33:54,432 INFO L276 IsEmpty]: Start isEmpty. Operand 1365 states and 4154 transitions. [2021-06-05 20:33:54,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:33:54,434 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:33:54,434 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:33:54,434 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2021-06-05 20:33:54,434 INFO L430 AbstractCegarLoop]: === Iteration 63 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:33:54,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:33:54,434 INFO L82 PathProgramCache]: Analyzing trace with hash -394133162, now seen corresponding path program 61 times [2021-06-05 20:33:54,434 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:33:54,434 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [355495094] [2021-06-05 20:33:54,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:33:54,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:33:54,494 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:33:54,494 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:33:54,494 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [355495094] [2021-06-05 20:33:54,494 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [355495094] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:33:54,494 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:33:54,494 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 20:33:54,494 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [712987662] [2021-06-05 20:33:54,495 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 20:33:54,495 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:33:54,495 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 20:33:54,495 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:33:54,495 INFO L87 Difference]: Start difference. First operand 1365 states and 4154 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:33:54,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:33:54,668 INFO L93 Difference]: Finished difference Result 1567 states and 4715 transitions. [2021-06-05 20:33:54,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 20:33:54,669 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:33:54,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:33:54,670 INFO L225 Difference]: With dead ends: 1567 [2021-06-05 20:33:54,670 INFO L226 Difference]: Without dead ends: 1488 [2021-06-05 20:33:54,671 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 49.4ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:33:54,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1488 states. [2021-06-05 20:33:54,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1488 to 1372. [2021-06-05 20:33:54,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1372 states, 1371 states have (on average 3.0437636761487963) internal successors, (4173), 1371 states have internal predecessors, (4173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:33:54,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1372 states to 1372 states and 4173 transitions. [2021-06-05 20:33:54,686 INFO L78 Accepts]: Start accepts. Automaton has 1372 states and 4173 transitions. Word has length 26 [2021-06-05 20:33:54,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:33:54,686 INFO L482 AbstractCegarLoop]: Abstraction has 1372 states and 4173 transitions. [2021-06-05 20:33:54,686 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:33:54,686 INFO L276 IsEmpty]: Start isEmpty. Operand 1372 states and 4173 transitions. [2021-06-05 20:33:54,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:33:54,687 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:33:54,687 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:33:54,687 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2021-06-05 20:33:54,687 INFO L430 AbstractCegarLoop]: === Iteration 64 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:33:54,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:33:54,688 INFO L82 PathProgramCache]: Analyzing trace with hash -967530438, now seen corresponding path program 62 times [2021-06-05 20:33:54,688 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:33:54,688 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [181373565] [2021-06-05 20:33:54,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:33:54,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:33:54,743 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:33:54,743 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:33:54,744 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [181373565] [2021-06-05 20:33:54,744 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [181373565] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:33:54,744 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:33:54,744 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 20:33:54,744 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [127851098] [2021-06-05 20:33:54,744 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 20:33:54,744 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:33:54,744 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 20:33:54,744 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:33:54,744 INFO L87 Difference]: Start difference. First operand 1372 states and 4173 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:33:54,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:33:54,930 INFO L93 Difference]: Finished difference Result 1591 states and 4779 transitions. [2021-06-05 20:33:54,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 20:33:54,931 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:33:54,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:33:54,933 INFO L225 Difference]: With dead ends: 1591 [2021-06-05 20:33:54,933 INFO L226 Difference]: Without dead ends: 1496 [2021-06-05 20:33:54,933 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 44.7ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:33:54,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1496 states. [2021-06-05 20:33:54,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1496 to 1377. [2021-06-05 20:33:54,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1377 states, 1376 states have (on average 3.0450581395348837) internal successors, (4190), 1376 states have internal predecessors, (4190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:33:54,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1377 states to 1377 states and 4190 transitions. [2021-06-05 20:33:54,951 INFO L78 Accepts]: Start accepts. Automaton has 1377 states and 4190 transitions. Word has length 26 [2021-06-05 20:33:54,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:33:54,951 INFO L482 AbstractCegarLoop]: Abstraction has 1377 states and 4190 transitions. [2021-06-05 20:33:54,951 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:33:54,951 INFO L276 IsEmpty]: Start isEmpty. Operand 1377 states and 4190 transitions. [2021-06-05 20:33:54,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:33:54,953 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:33:54,953 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:33:54,953 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2021-06-05 20:33:54,953 INFO L430 AbstractCegarLoop]: === Iteration 65 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:33:54,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:33:54,953 INFO L82 PathProgramCache]: Analyzing trace with hash -380979590, now seen corresponding path program 63 times [2021-06-05 20:33:54,953 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:33:54,953 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [827267630] [2021-06-05 20:33:54,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:33:54,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:33:55,034 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:33:55,034 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:33:55,034 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [827267630] [2021-06-05 20:33:55,034 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [827267630] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:33:55,034 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:33:55,034 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 20:33:55,035 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [494340016] [2021-06-05 20:33:55,035 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 20:33:55,035 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:33:55,035 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 20:33:55,035 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:33:55,035 INFO L87 Difference]: Start difference. First operand 1377 states and 4190 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:33:55,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:33:55,207 INFO L93 Difference]: Finished difference Result 1579 states and 4742 transitions. [2021-06-05 20:33:55,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 20:33:55,208 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:33:55,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:33:55,209 INFO L225 Difference]: With dead ends: 1579 [2021-06-05 20:33:55,209 INFO L226 Difference]: Without dead ends: 1491 [2021-06-05 20:33:55,210 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 49.6ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:33:55,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1491 states. [2021-06-05 20:33:55,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1491 to 1383. [2021-06-05 20:33:55,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1383 states, 1382 states have (on average 3.045586107091172) internal successors, (4209), 1382 states have internal predecessors, (4209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:33:55,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1383 states to 1383 states and 4209 transitions. [2021-06-05 20:33:55,226 INFO L78 Accepts]: Start accepts. Automaton has 1383 states and 4209 transitions. Word has length 26 [2021-06-05 20:33:55,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:33:55,226 INFO L482 AbstractCegarLoop]: Abstraction has 1383 states and 4209 transitions. [2021-06-05 20:33:55,226 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:33:55,226 INFO L276 IsEmpty]: Start isEmpty. Operand 1383 states and 4209 transitions. [2021-06-05 20:33:55,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:33:55,227 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:33:55,227 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:33:55,227 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2021-06-05 20:33:55,227 INFO L430 AbstractCegarLoop]: === Iteration 66 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:33:55,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:33:55,228 INFO L82 PathProgramCache]: Analyzing trace with hash -1093047432, now seen corresponding path program 64 times [2021-06-05 20:33:55,228 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:33:55,228 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [267165683] [2021-06-05 20:33:55,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:33:55,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:33:55,290 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:33:55,290 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:33:55,290 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [267165683] [2021-06-05 20:33:55,291 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [267165683] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:33:55,291 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:33:55,291 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 20:33:55,291 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1694085140] [2021-06-05 20:33:55,291 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 20:33:55,291 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:33:55,291 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 20:33:55,291 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:33:55,291 INFO L87 Difference]: Start difference. First operand 1383 states and 4209 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:33:55,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:33:55,460 INFO L93 Difference]: Finished difference Result 1558 states and 4681 transitions. [2021-06-05 20:33:55,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 20:33:55,461 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:33:55,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:33:55,462 INFO L225 Difference]: With dead ends: 1558 [2021-06-05 20:33:55,462 INFO L226 Difference]: Without dead ends: 1464 [2021-06-05 20:33:55,463 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 49.9ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:33:55,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1464 states. [2021-06-05 20:33:55,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1464 to 1385. [2021-06-05 20:33:55,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1385 states, 1384 states have (on average 3.046965317919075) internal successors, (4217), 1384 states have internal predecessors, (4217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:33:55,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1385 states to 1385 states and 4217 transitions. [2021-06-05 20:33:55,477 INFO L78 Accepts]: Start accepts. Automaton has 1385 states and 4217 transitions. Word has length 26 [2021-06-05 20:33:55,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:33:55,477 INFO L482 AbstractCegarLoop]: Abstraction has 1385 states and 4217 transitions. [2021-06-05 20:33:55,477 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:33:55,478 INFO L276 IsEmpty]: Start isEmpty. Operand 1385 states and 4217 transitions. [2021-06-05 20:33:55,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:33:55,479 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:33:55,479 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:33:55,479 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2021-06-05 20:33:55,479 INFO L430 AbstractCegarLoop]: === Iteration 67 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:33:55,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:33:55,479 INFO L82 PathProgramCache]: Analyzing trace with hash -1674506, now seen corresponding path program 65 times [2021-06-05 20:33:55,479 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:33:55,479 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [422004952] [2021-06-05 20:33:55,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:33:55,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:33:55,545 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:33:55,545 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:33:55,545 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [422004952] [2021-06-05 20:33:55,545 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [422004952] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:33:55,545 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:33:55,545 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 20:33:55,545 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1581811332] [2021-06-05 20:33:55,545 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 20:33:55,545 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:33:55,546 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 20:33:55,546 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:33:55,546 INFO L87 Difference]: Start difference. First operand 1385 states and 4217 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:33:55,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:33:55,727 INFO L93 Difference]: Finished difference Result 1534 states and 4620 transitions. [2021-06-05 20:33:55,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 20:33:55,728 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:33:55,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:33:55,730 INFO L225 Difference]: With dead ends: 1534 [2021-06-05 20:33:55,730 INFO L226 Difference]: Without dead ends: 1455 [2021-06-05 20:33:55,730 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 46.5ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:33:55,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1455 states. [2021-06-05 20:33:55,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1455 to 1391. [2021-06-05 20:33:55,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1391 states, 1390 states have (on average 3.050359712230216) internal successors, (4240), 1390 states have internal predecessors, (4240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:33:55,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1391 states to 1391 states and 4240 transitions. [2021-06-05 20:33:55,751 INFO L78 Accepts]: Start accepts. Automaton has 1391 states and 4240 transitions. Word has length 26 [2021-06-05 20:33:55,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:33:55,751 INFO L482 AbstractCegarLoop]: Abstraction has 1391 states and 4240 transitions. [2021-06-05 20:33:55,751 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:33:55,751 INFO L276 IsEmpty]: Start isEmpty. Operand 1391 states and 4240 transitions. [2021-06-05 20:33:55,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:33:55,753 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:33:55,753 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:33:55,753 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2021-06-05 20:33:55,753 INFO L430 AbstractCegarLoop]: === Iteration 68 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:33:55,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:33:55,753 INFO L82 PathProgramCache]: Analyzing trace with hash 867770102, now seen corresponding path program 66 times [2021-06-05 20:33:55,753 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:33:55,753 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [152513947] [2021-06-05 20:33:55,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:33:55,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:33:55,809 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:33:55,809 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:33:55,809 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [152513947] [2021-06-05 20:33:55,809 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [152513947] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:33:55,809 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:33:55,809 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 20:33:55,810 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [623150405] [2021-06-05 20:33:55,810 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 20:33:55,810 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:33:55,810 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 20:33:55,810 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:33:55,810 INFO L87 Difference]: Start difference. First operand 1391 states and 4240 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:33:55,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:33:55,985 INFO L93 Difference]: Finished difference Result 1569 states and 4729 transitions. [2021-06-05 20:33:55,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 20:33:55,985 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:33:55,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:33:55,987 INFO L225 Difference]: With dead ends: 1569 [2021-06-05 20:33:55,987 INFO L226 Difference]: Without dead ends: 1474 [2021-06-05 20:33:55,987 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 46.1ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:33:55,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1474 states. [2021-06-05 20:33:55,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1474 to 1400. [2021-06-05 20:33:56,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1400 states, 1399 states have (on average 3.0528949249463904) internal successors, (4271), 1399 states have internal predecessors, (4271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:33:56,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1400 states to 1400 states and 4271 transitions. [2021-06-05 20:33:56,002 INFO L78 Accepts]: Start accepts. Automaton has 1400 states and 4271 transitions. Word has length 26 [2021-06-05 20:33:56,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:33:56,002 INFO L482 AbstractCegarLoop]: Abstraction has 1400 states and 4271 transitions. [2021-06-05 20:33:56,002 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:33:56,002 INFO L276 IsEmpty]: Start isEmpty. Operand 1400 states and 4271 transitions. [2021-06-05 20:33:56,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:33:56,003 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:33:56,004 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:33:56,004 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2021-06-05 20:33:56,004 INFO L430 AbstractCegarLoop]: === Iteration 69 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:33:56,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:33:56,004 INFO L82 PathProgramCache]: Analyzing trace with hash -1506513324, now seen corresponding path program 67 times [2021-06-05 20:33:56,004 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:33:56,004 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1957938447] [2021-06-05 20:33:56,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:33:56,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:33:56,062 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:33:56,063 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:33:56,063 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1957938447] [2021-06-05 20:33:56,063 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1957938447] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:33:56,063 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:33:56,063 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 20:33:56,063 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [608537460] [2021-06-05 20:33:56,063 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 20:33:56,063 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:33:56,063 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 20:33:56,063 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:33:56,063 INFO L87 Difference]: Start difference. First operand 1400 states and 4271 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:33:56,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:33:56,225 INFO L93 Difference]: Finished difference Result 1559 states and 4705 transitions. [2021-06-05 20:33:56,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 20:33:56,226 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:33:56,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:33:56,227 INFO L225 Difference]: With dead ends: 1559 [2021-06-05 20:33:56,228 INFO L226 Difference]: Without dead ends: 1474 [2021-06-05 20:33:56,228 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 48.4ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:33:56,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1474 states. [2021-06-05 20:33:56,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1474 to 1404. [2021-06-05 20:33:56,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1404 states, 1403 states have (on average 3.050605844618674) internal successors, (4280), 1403 states have internal predecessors, (4280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:33:56,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1404 states to 1404 states and 4280 transitions. [2021-06-05 20:33:56,242 INFO L78 Accepts]: Start accepts. Automaton has 1404 states and 4280 transitions. Word has length 26 [2021-06-05 20:33:56,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:33:56,242 INFO L482 AbstractCegarLoop]: Abstraction has 1404 states and 4280 transitions. [2021-06-05 20:33:56,242 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:33:56,243 INFO L276 IsEmpty]: Start isEmpty. Operand 1404 states and 4280 transitions. [2021-06-05 20:33:56,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:33:56,244 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:33:56,244 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:33:56,244 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2021-06-05 20:33:56,244 INFO L430 AbstractCegarLoop]: === Iteration 70 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:33:56,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:33:56,244 INFO L82 PathProgramCache]: Analyzing trace with hash 613424368, now seen corresponding path program 68 times [2021-06-05 20:33:56,244 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:33:56,244 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [847121547] [2021-06-05 20:33:56,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:33:56,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:33:56,304 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:33:56,304 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:33:56,305 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [847121547] [2021-06-05 20:33:56,305 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [847121547] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:33:56,305 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:33:56,305 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 20:33:56,305 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [558579053] [2021-06-05 20:33:56,305 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 20:33:56,305 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:33:56,305 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 20:33:56,305 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:33:56,305 INFO L87 Difference]: Start difference. First operand 1404 states and 4280 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:33:56,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:33:56,469 INFO L93 Difference]: Finished difference Result 1599 states and 4818 transitions. [2021-06-05 20:33:56,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 20:33:56,470 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:33:56,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:33:56,471 INFO L225 Difference]: With dead ends: 1599 [2021-06-05 20:33:56,471 INFO L226 Difference]: Without dead ends: 1496 [2021-06-05 20:33:56,472 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 49.4ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:33:56,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1496 states. [2021-06-05 20:33:56,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1496 to 1402. [2021-06-05 20:33:56,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1402 states, 1401 states have (on average 3.054960742326909) internal successors, (4280), 1401 states have internal predecessors, (4280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:33:56,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1402 states to 1402 states and 4280 transitions. [2021-06-05 20:33:56,487 INFO L78 Accepts]: Start accepts. Automaton has 1402 states and 4280 transitions. Word has length 26 [2021-06-05 20:33:56,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:33:56,487 INFO L482 AbstractCegarLoop]: Abstraction has 1402 states and 4280 transitions. [2021-06-05 20:33:56,487 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:33:56,488 INFO L276 IsEmpty]: Start isEmpty. Operand 1402 states and 4280 transitions. [2021-06-05 20:33:56,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:33:56,489 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:33:56,489 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:33:56,489 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2021-06-05 20:33:56,489 INFO L430 AbstractCegarLoop]: === Iteration 71 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:33:56,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:33:56,489 INFO L82 PathProgramCache]: Analyzing trace with hash 1118284984, now seen corresponding path program 69 times [2021-06-05 20:33:56,489 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:33:56,489 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1201873276] [2021-06-05 20:33:56,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:33:56,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:33:56,561 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:33:56,561 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:33:56,561 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1201873276] [2021-06-05 20:33:56,561 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1201873276] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:33:56,561 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:33:56,561 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 20:33:56,561 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [405433043] [2021-06-05 20:33:56,561 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 20:33:56,561 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:33:56,562 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 20:33:56,562 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:33:56,562 INFO L87 Difference]: Start difference. First operand 1402 states and 4280 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:33:56,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:33:56,738 INFO L93 Difference]: Finished difference Result 1713 states and 5194 transitions. [2021-06-05 20:33:56,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 20:33:56,738 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:33:56,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:33:56,740 INFO L225 Difference]: With dead ends: 1713 [2021-06-05 20:33:56,740 INFO L226 Difference]: Without dead ends: 1634 [2021-06-05 20:33:56,740 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 51.2ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:33:56,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1634 states. [2021-06-05 20:33:56,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1634 to 1411. [2021-06-05 20:33:56,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1411 states, 1410 states have (on average 3.0602836879432624) internal successors, (4315), 1410 states have internal predecessors, (4315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:33:56,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1411 states to 1411 states and 4315 transitions. [2021-06-05 20:33:56,756 INFO L78 Accepts]: Start accepts. Automaton has 1411 states and 4315 transitions. Word has length 26 [2021-06-05 20:33:56,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:33:56,756 INFO L482 AbstractCegarLoop]: Abstraction has 1411 states and 4315 transitions. [2021-06-05 20:33:56,756 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:33:56,756 INFO L276 IsEmpty]: Start isEmpty. Operand 1411 states and 4315 transitions. [2021-06-05 20:33:56,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:33:56,757 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:33:56,757 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:33:56,764 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2021-06-05 20:33:56,764 INFO L430 AbstractCegarLoop]: === Iteration 72 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:33:56,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:33:56,764 INFO L82 PathProgramCache]: Analyzing trace with hash 544887708, now seen corresponding path program 70 times [2021-06-05 20:33:56,764 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:33:56,764 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [437734986] [2021-06-05 20:33:56,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:33:56,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:33:56,831 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:33:56,831 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:33:56,831 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [437734986] [2021-06-05 20:33:56,832 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [437734986] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:33:56,832 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:33:56,832 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 20:33:56,832 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1774150121] [2021-06-05 20:33:56,832 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 20:33:56,832 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:33:56,832 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 20:33:56,832 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:33:56,832 INFO L87 Difference]: Start difference. First operand 1411 states and 4315 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:33:57,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:33:57,022 INFO L93 Difference]: Finished difference Result 1734 states and 5229 transitions. [2021-06-05 20:33:57,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 20:33:57,022 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:33:57,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:33:57,024 INFO L225 Difference]: With dead ends: 1734 [2021-06-05 20:33:57,024 INFO L226 Difference]: Without dead ends: 1639 [2021-06-05 20:33:57,024 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 56.7ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:33:57,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1639 states. [2021-06-05 20:33:57,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1639 to 1415. [2021-06-05 20:33:57,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1415 states, 1414 states have (on average 3.0594059405940595) internal successors, (4326), 1414 states have internal predecessors, (4326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:33:57,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1415 states to 1415 states and 4326 transitions. [2021-06-05 20:33:57,041 INFO L78 Accepts]: Start accepts. Automaton has 1415 states and 4326 transitions. Word has length 26 [2021-06-05 20:33:57,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:33:57,041 INFO L482 AbstractCegarLoop]: Abstraction has 1415 states and 4326 transitions. [2021-06-05 20:33:57,041 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:33:57,041 INFO L276 IsEmpty]: Start isEmpty. Operand 1415 states and 4326 transitions. [2021-06-05 20:33:57,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:33:57,042 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:33:57,042 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:33:57,042 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2021-06-05 20:33:57,042 INFO L430 AbstractCegarLoop]: === Iteration 73 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:33:57,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:33:57,043 INFO L82 PathProgramCache]: Analyzing trace with hash -273859562, now seen corresponding path program 71 times [2021-06-05 20:33:57,043 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:33:57,043 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1823177406] [2021-06-05 20:33:57,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:33:57,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:33:57,103 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:33:57,104 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:33:57,104 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1823177406] [2021-06-05 20:33:57,104 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1823177406] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:33:57,104 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:33:57,104 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 20:33:57,104 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1459476427] [2021-06-05 20:33:57,104 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 20:33:57,104 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:33:57,104 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 20:33:57,104 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:33:57,104 INFO L87 Difference]: Start difference. First operand 1415 states and 4326 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:33:57,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:33:57,276 INFO L93 Difference]: Finished difference Result 1641 states and 4975 transitions. [2021-06-05 20:33:57,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 20:33:57,276 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:33:57,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:33:57,278 INFO L225 Difference]: With dead ends: 1641 [2021-06-05 20:33:57,278 INFO L226 Difference]: Without dead ends: 1551 [2021-06-05 20:33:57,278 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 50.8ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:33:57,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1551 states. [2021-06-05 20:33:57,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1551 to 1409. [2021-06-05 20:33:57,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1409 states, 1408 states have (on average 3.061789772727273) internal successors, (4311), 1408 states have internal predecessors, (4311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:33:57,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1409 states to 1409 states and 4311 transitions. [2021-06-05 20:33:57,293 INFO L78 Accepts]: Start accepts. Automaton has 1409 states and 4311 transitions. Word has length 26 [2021-06-05 20:33:57,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:33:57,293 INFO L482 AbstractCegarLoop]: Abstraction has 1409 states and 4311 transitions. [2021-06-05 20:33:57,293 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:33:57,293 INFO L276 IsEmpty]: Start isEmpty. Operand 1409 states and 4311 transitions. [2021-06-05 20:33:57,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:33:57,295 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:33:57,295 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:33:57,295 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2021-06-05 20:33:57,295 INFO L430 AbstractCegarLoop]: === Iteration 74 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:33:57,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:33:57,295 INFO L82 PathProgramCache]: Analyzing trace with hash -648872902, now seen corresponding path program 72 times [2021-06-05 20:33:57,295 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:33:57,295 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [41585878] [2021-06-05 20:33:57,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:33:57,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:33:57,350 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:33:57,351 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:33:57,351 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [41585878] [2021-06-05 20:33:57,351 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [41585878] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:33:57,351 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:33:57,351 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:33:57,351 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [110028646] [2021-06-05 20:33:57,351 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-05 20:33:57,351 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:33:57,351 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-05 20:33:57,351 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:33:57,351 INFO L87 Difference]: Start difference. First operand 1409 states and 4311 transitions. Second operand has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:33:57,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:33:57,484 INFO L93 Difference]: Finished difference Result 1735 states and 5254 transitions. [2021-06-05 20:33:57,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-05 20:33:57,485 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:33:57,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:33:57,487 INFO L225 Difference]: With dead ends: 1735 [2021-06-05 20:33:57,487 INFO L226 Difference]: Without dead ends: 1656 [2021-06-05 20:33:57,487 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 41.0ms TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:33:57,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1656 states. [2021-06-05 20:33:57,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1656 to 1445. [2021-06-05 20:33:57,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1445 states, 1444 states have (on average 3.059556786703601) internal successors, (4418), 1444 states have internal predecessors, (4418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:33:57,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1445 states to 1445 states and 4418 transitions. [2021-06-05 20:33:57,502 INFO L78 Accepts]: Start accepts. Automaton has 1445 states and 4418 transitions. Word has length 26 [2021-06-05 20:33:57,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:33:57,503 INFO L482 AbstractCegarLoop]: Abstraction has 1445 states and 4418 transitions. [2021-06-05 20:33:57,503 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:33:57,503 INFO L276 IsEmpty]: Start isEmpty. Operand 1445 states and 4418 transitions. [2021-06-05 20:33:57,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:33:57,504 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:33:57,504 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:33:57,504 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2021-06-05 20:33:57,504 INFO L430 AbstractCegarLoop]: === Iteration 75 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:33:57,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:33:57,505 INFO L82 PathProgramCache]: Analyzing trace with hash 220571706, now seen corresponding path program 73 times [2021-06-05 20:33:57,505 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:33:57,505 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [872194054] [2021-06-05 20:33:57,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:33:57,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:33:57,564 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:33:57,565 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:33:57,565 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [872194054] [2021-06-05 20:33:57,565 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [872194054] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:33:57,565 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:33:57,565 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 20:33:57,565 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1536988800] [2021-06-05 20:33:57,565 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 20:33:57,565 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:33:57,565 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 20:33:57,565 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:33:57,565 INFO L87 Difference]: Start difference. First operand 1445 states and 4418 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:33:57,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:33:57,729 INFO L93 Difference]: Finished difference Result 1792 states and 5392 transitions. [2021-06-05 20:33:57,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 20:33:57,729 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:33:57,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:33:57,731 INFO L225 Difference]: With dead ends: 1792 [2021-06-05 20:33:57,731 INFO L226 Difference]: Without dead ends: 1611 [2021-06-05 20:33:57,731 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 45.2ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:33:57,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1611 states. [2021-06-05 20:33:57,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1611 to 1435. [2021-06-05 20:33:57,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1435 states, 1434 states have (on average 3.0641562064156207) internal successors, (4394), 1434 states have internal predecessors, (4394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:33:57,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1435 states to 1435 states and 4394 transitions. [2021-06-05 20:33:57,747 INFO L78 Accepts]: Start accepts. Automaton has 1435 states and 4394 transitions. Word has length 26 [2021-06-05 20:33:57,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:33:57,747 INFO L482 AbstractCegarLoop]: Abstraction has 1435 states and 4394 transitions. [2021-06-05 20:33:57,747 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:33:57,747 INFO L276 IsEmpty]: Start isEmpty. Operand 1435 states and 4394 transitions. [2021-06-05 20:33:57,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:33:57,749 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:33:57,749 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:33:57,749 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2021-06-05 20:33:57,749 INFO L430 AbstractCegarLoop]: === Iteration 76 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:33:57,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:33:57,749 INFO L82 PathProgramCache]: Analyzing trace with hash 1928353624, now seen corresponding path program 74 times [2021-06-05 20:33:57,749 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:33:57,749 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1529696732] [2021-06-05 20:33:57,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:33:57,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:33:57,821 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:33:57,821 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:33:57,821 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1529696732] [2021-06-05 20:33:57,822 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1529696732] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:33:57,822 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:33:57,822 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 20:33:57,822 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [63907262] [2021-06-05 20:33:57,822 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 20:33:57,822 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:33:57,822 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 20:33:57,822 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:33:57,822 INFO L87 Difference]: Start difference. First operand 1435 states and 4394 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:33:58,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:33:58,024 INFO L93 Difference]: Finished difference Result 1663 states and 5025 transitions. [2021-06-05 20:33:58,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 20:33:58,025 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:33:58,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:33:58,027 INFO L225 Difference]: With dead ends: 1663 [2021-06-05 20:33:58,027 INFO L226 Difference]: Without dead ends: 1584 [2021-06-05 20:33:58,027 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 50.3ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:33:58,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1584 states. [2021-06-05 20:33:58,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1584 to 1437. [2021-06-05 20:33:58,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1437 states, 1436 states have (on average 3.0647632311977717) internal successors, (4401), 1436 states have internal predecessors, (4401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:33:58,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1437 states to 1437 states and 4401 transitions. [2021-06-05 20:33:58,042 INFO L78 Accepts]: Start accepts. Automaton has 1437 states and 4401 transitions. Word has length 26 [2021-06-05 20:33:58,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:33:58,042 INFO L482 AbstractCegarLoop]: Abstraction has 1437 states and 4401 transitions. [2021-06-05 20:33:58,043 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:33:58,043 INFO L276 IsEmpty]: Start isEmpty. Operand 1437 states and 4401 transitions. [2021-06-05 20:33:58,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:33:58,045 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:33:58,045 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:33:58,045 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2021-06-05 20:33:58,045 INFO L430 AbstractCegarLoop]: === Iteration 77 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:33:58,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:33:58,045 INFO L82 PathProgramCache]: Analyzing trace with hash -1497169064, now seen corresponding path program 75 times [2021-06-05 20:33:58,045 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:33:58,045 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [202210636] [2021-06-05 20:33:58,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:33:58,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:33:58,106 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:33:58,106 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:33:58,106 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [202210636] [2021-06-05 20:33:58,106 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [202210636] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:33:58,107 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:33:58,107 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 20:33:58,107 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1122725741] [2021-06-05 20:33:58,107 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 20:33:58,107 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:33:58,107 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 20:33:58,107 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:33:58,107 INFO L87 Difference]: Start difference. First operand 1437 states and 4401 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:33:58,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:33:58,301 INFO L93 Difference]: Finished difference Result 1626 states and 4884 transitions. [2021-06-05 20:33:58,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 20:33:58,301 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:33:58,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:33:58,304 INFO L225 Difference]: With dead ends: 1626 [2021-06-05 20:33:58,304 INFO L226 Difference]: Without dead ends: 1531 [2021-06-05 20:33:58,304 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 49.0ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:33:58,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1531 states. [2021-06-05 20:33:58,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1531 to 1451. [2021-06-05 20:33:58,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1451 states, 1450 states have (on average 3.0606896551724136) internal successors, (4438), 1450 states have internal predecessors, (4438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:33:58,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1451 states to 1451 states and 4438 transitions. [2021-06-05 20:33:58,320 INFO L78 Accepts]: Start accepts. Automaton has 1451 states and 4438 transitions. Word has length 26 [2021-06-05 20:33:58,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:33:58,320 INFO L482 AbstractCegarLoop]: Abstraction has 1451 states and 4438 transitions. [2021-06-05 20:33:58,320 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:33:58,320 INFO L276 IsEmpty]: Start isEmpty. Operand 1451 states and 4438 transitions. [2021-06-05 20:33:58,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:33:58,322 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:33:58,322 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:33:58,322 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2021-06-05 20:33:58,322 INFO L430 AbstractCegarLoop]: === Iteration 78 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:33:58,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:33:58,322 INFO L82 PathProgramCache]: Analyzing trace with hash 755689726, now seen corresponding path program 76 times [2021-06-05 20:33:58,322 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:33:58,322 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1603967186] [2021-06-05 20:33:58,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:33:58,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:33:58,374 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:33:58,374 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:33:58,374 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1603967186] [2021-06-05 20:33:58,374 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1603967186] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:33:58,374 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:33:58,374 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:33:58,374 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [499155968] [2021-06-05 20:33:58,374 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-05 20:33:58,374 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:33:58,375 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-05 20:33:58,375 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:33:58,375 INFO L87 Difference]: Start difference. First operand 1451 states and 4438 transitions. Second operand has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:33:58,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:33:58,510 INFO L93 Difference]: Finished difference Result 1742 states and 5269 transitions. [2021-06-05 20:33:58,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-05 20:33:58,511 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:33:58,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:33:58,512 INFO L225 Difference]: With dead ends: 1742 [2021-06-05 20:33:58,513 INFO L226 Difference]: Without dead ends: 1653 [2021-06-05 20:33:58,513 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 40.4ms TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:33:58,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1653 states. [2021-06-05 20:33:58,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1653 to 1461. [2021-06-05 20:33:58,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1461 states, 1460 states have (on average 3.0595890410958906) internal successors, (4467), 1460 states have internal predecessors, (4467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:33:58,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1461 states to 1461 states and 4467 transitions. [2021-06-05 20:33:58,529 INFO L78 Accepts]: Start accepts. Automaton has 1461 states and 4467 transitions. Word has length 26 [2021-06-05 20:33:58,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:33:58,529 INFO L482 AbstractCegarLoop]: Abstraction has 1461 states and 4467 transitions. [2021-06-05 20:33:58,529 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:33:58,529 INFO L276 IsEmpty]: Start isEmpty. Operand 1461 states and 4467 transitions. [2021-06-05 20:33:58,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:33:58,530 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:33:58,530 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:33:58,530 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2021-06-05 20:33:58,530 INFO L430 AbstractCegarLoop]: === Iteration 79 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:33:58,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:33:58,531 INFO L82 PathProgramCache]: Analyzing trace with hash 1342240574, now seen corresponding path program 77 times [2021-06-05 20:33:58,531 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:33:58,531 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1090517224] [2021-06-05 20:33:58,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:33:58,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:33:58,593 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:33:58,594 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:33:58,594 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1090517224] [2021-06-05 20:33:58,594 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1090517224] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:33:58,594 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:33:58,594 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 20:33:58,594 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1443284627] [2021-06-05 20:33:58,594 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 20:33:58,594 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:33:58,594 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 20:33:58,594 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:33:58,594 INFO L87 Difference]: Start difference. First operand 1461 states and 4467 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:33:58,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:33:58,764 INFO L93 Difference]: Finished difference Result 1678 states and 5043 transitions. [2021-06-05 20:33:58,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 20:33:58,764 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:33:58,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:33:58,766 INFO L225 Difference]: With dead ends: 1678 [2021-06-05 20:33:58,766 INFO L226 Difference]: Without dead ends: 1590 [2021-06-05 20:33:58,766 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 49.3ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:33:58,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1590 states. [2021-06-05 20:33:58,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1590 to 1461. [2021-06-05 20:33:58,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1461 states, 1460 states have (on average 3.0595890410958906) internal successors, (4467), 1460 states have internal predecessors, (4467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:33:58,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1461 states to 1461 states and 4467 transitions. [2021-06-05 20:33:58,782 INFO L78 Accepts]: Start accepts. Automaton has 1461 states and 4467 transitions. Word has length 26 [2021-06-05 20:33:58,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:33:58,782 INFO L482 AbstractCegarLoop]: Abstraction has 1461 states and 4467 transitions. [2021-06-05 20:33:58,782 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:33:58,782 INFO L276 IsEmpty]: Start isEmpty. Operand 1461 states and 4467 transitions. [2021-06-05 20:33:58,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:33:58,784 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:33:58,784 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:33:58,784 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2021-06-05 20:33:58,784 INFO L430 AbstractCegarLoop]: === Iteration 80 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:33:58,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:33:58,784 INFO L82 PathProgramCache]: Analyzing trace with hash 630172732, now seen corresponding path program 78 times [2021-06-05 20:33:58,785 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:33:58,785 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [930821175] [2021-06-05 20:33:58,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:33:58,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:33:58,843 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:33:58,843 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:33:58,843 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [930821175] [2021-06-05 20:33:58,843 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [930821175] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:33:58,844 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:33:58,844 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 20:33:58,844 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1717452849] [2021-06-05 20:33:58,844 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 20:33:58,844 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:33:58,844 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 20:33:58,844 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:33:58,844 INFO L87 Difference]: Start difference. First operand 1461 states and 4467 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:33:59,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:33:59,023 INFO L93 Difference]: Finished difference Result 1816 states and 5475 transitions. [2021-06-05 20:33:59,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 20:33:59,023 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:33:59,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:33:59,025 INFO L225 Difference]: With dead ends: 1816 [2021-06-05 20:33:59,025 INFO L226 Difference]: Without dead ends: 1722 [2021-06-05 20:33:59,025 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 49.3ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:33:59,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1722 states. [2021-06-05 20:33:59,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1722 to 1485. [2021-06-05 20:33:59,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1485 states, 1484 states have (on average 3.0633423180592994) internal successors, (4546), 1484 states have internal predecessors, (4546), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:33:59,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1485 states to 1485 states and 4546 transitions. [2021-06-05 20:33:59,041 INFO L78 Accepts]: Start accepts. Automaton has 1485 states and 4546 transitions. Word has length 26 [2021-06-05 20:33:59,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:33:59,042 INFO L482 AbstractCegarLoop]: Abstraction has 1485 states and 4546 transitions. [2021-06-05 20:33:59,042 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:33:59,042 INFO L276 IsEmpty]: Start isEmpty. Operand 1485 states and 4546 transitions. [2021-06-05 20:33:59,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:33:59,043 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:33:59,043 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:33:59,043 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2021-06-05 20:33:59,043 INFO L430 AbstractCegarLoop]: === Iteration 81 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:33:59,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:33:59,043 INFO L82 PathProgramCache]: Analyzing trace with hash -333059278, now seen corresponding path program 79 times [2021-06-05 20:33:59,044 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:33:59,044 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1585484746] [2021-06-05 20:33:59,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:33:59,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:33:59,096 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:33:59,096 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:33:59,096 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1585484746] [2021-06-05 20:33:59,096 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1585484746] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:33:59,096 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:33:59,096 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:33:59,096 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1926194116] [2021-06-05 20:33:59,097 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-05 20:33:59,097 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:33:59,097 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-05 20:33:59,097 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:33:59,097 INFO L87 Difference]: Start difference. First operand 1485 states and 4546 transitions. Second operand has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:33:59,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:33:59,229 INFO L93 Difference]: Finished difference Result 1851 states and 5576 transitions. [2021-06-05 20:33:59,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-05 20:33:59,229 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:33:59,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:33:59,231 INFO L225 Difference]: With dead ends: 1851 [2021-06-05 20:33:59,231 INFO L226 Difference]: Without dead ends: 1679 [2021-06-05 20:33:59,231 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 40.0ms TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:33:59,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1679 states. [2021-06-05 20:33:59,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1679 to 1453. [2021-06-05 20:33:59,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1453 states, 1452 states have (on average 3.0550964187327825) internal successors, (4436), 1452 states have internal predecessors, (4436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:33:59,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1453 states to 1453 states and 4436 transitions. [2021-06-05 20:33:59,247 INFO L78 Accepts]: Start accepts. Automaton has 1453 states and 4436 transitions. Word has length 26 [2021-06-05 20:33:59,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:33:59,247 INFO L482 AbstractCegarLoop]: Abstraction has 1453 states and 4436 transitions. [2021-06-05 20:33:59,247 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:33:59,247 INFO L276 IsEmpty]: Start isEmpty. Operand 1453 states and 4436 transitions. [2021-06-05 20:33:59,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:33:59,248 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:33:59,249 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:33:59,249 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2021-06-05 20:33:59,249 INFO L430 AbstractCegarLoop]: === Iteration 82 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:33:59,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:33:59,249 INFO L82 PathProgramCache]: Analyzing trace with hash -1912490924, now seen corresponding path program 80 times [2021-06-05 20:33:59,249 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:33:59,249 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1409910293] [2021-06-05 20:33:59,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:33:59,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:33:59,312 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:33:59,312 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:33:59,312 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1409910293] [2021-06-05 20:33:59,313 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1409910293] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:33:59,313 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:33:59,313 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 20:33:59,313 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1769844849] [2021-06-05 20:33:59,313 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 20:33:59,313 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:33:59,313 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 20:33:59,313 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:33:59,313 INFO L87 Difference]: Start difference. First operand 1453 states and 4436 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:33:59,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:33:59,478 INFO L93 Difference]: Finished difference Result 1732 states and 5178 transitions. [2021-06-05 20:33:59,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 20:33:59,479 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:33:59,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:33:59,480 INFO L225 Difference]: With dead ends: 1732 [2021-06-05 20:33:59,480 INFO L226 Difference]: Without dead ends: 1593 [2021-06-05 20:33:59,481 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 46.8ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:33:59,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1593 states. [2021-06-05 20:33:59,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1593 to 1443. [2021-06-05 20:33:59,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1443 states, 1442 states have (on average 3.0485436893203883) internal successors, (4396), 1442 states have internal predecessors, (4396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:33:59,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1443 states to 1443 states and 4396 transitions. [2021-06-05 20:33:59,496 INFO L78 Accepts]: Start accepts. Automaton has 1443 states and 4396 transitions. Word has length 26 [2021-06-05 20:33:59,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:33:59,496 INFO L482 AbstractCegarLoop]: Abstraction has 1443 states and 4396 transitions. [2021-06-05 20:33:59,496 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:33:59,497 INFO L276 IsEmpty]: Start isEmpty. Operand 1443 states and 4396 transitions. [2021-06-05 20:33:59,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:33:59,498 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:33:59,498 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:33:59,498 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2021-06-05 20:33:59,498 INFO L430 AbstractCegarLoop]: === Iteration 83 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:33:59,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:33:59,498 INFO L82 PathProgramCache]: Analyzing trace with hash 1530014744, now seen corresponding path program 81 times [2021-06-05 20:33:59,499 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:33:59,499 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1416245015] [2021-06-05 20:33:59,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:33:59,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:33:59,548 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:33:59,548 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:33:59,548 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1416245015] [2021-06-05 20:33:59,548 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1416245015] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:33:59,548 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:33:59,548 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:33:59,548 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [547206812] [2021-06-05 20:33:59,549 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-05 20:33:59,549 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:33:59,549 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-05 20:33:59,549 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:33:59,549 INFO L87 Difference]: Start difference. First operand 1443 states and 4396 transitions. Second operand has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:33:59,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:33:59,687 INFO L93 Difference]: Finished difference Result 1745 states and 5234 transitions. [2021-06-05 20:33:59,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-05 20:33:59,687 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:33:59,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:33:59,689 INFO L225 Difference]: With dead ends: 1745 [2021-06-05 20:33:59,689 INFO L226 Difference]: Without dead ends: 1660 [2021-06-05 20:33:59,689 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 39.4ms TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:33:59,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1660 states. [2021-06-05 20:33:59,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1660 to 1481. [2021-06-05 20:33:59,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1481 states, 1480 states have (on average 3.050675675675676) internal successors, (4515), 1480 states have internal predecessors, (4515), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:33:59,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1481 states to 1481 states and 4515 transitions. [2021-06-05 20:33:59,705 INFO L78 Accepts]: Start accepts. Automaton has 1481 states and 4515 transitions. Word has length 26 [2021-06-05 20:33:59,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:33:59,705 INFO L482 AbstractCegarLoop]: Abstraction has 1481 states and 4515 transitions. [2021-06-05 20:33:59,705 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:33:59,705 INFO L276 IsEmpty]: Start isEmpty. Operand 1481 states and 4515 transitions. [2021-06-05 20:33:59,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:33:59,706 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:33:59,706 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:33:59,706 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2021-06-05 20:33:59,707 INFO L430 AbstractCegarLoop]: === Iteration 84 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:33:59,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:33:59,707 INFO L82 PathProgramCache]: Analyzing trace with hash -1895507944, now seen corresponding path program 82 times [2021-06-05 20:33:59,707 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:33:59,707 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1606401984] [2021-06-05 20:33:59,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:33:59,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:33:59,765 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:33:59,765 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:33:59,766 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1606401984] [2021-06-05 20:33:59,766 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1606401984] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:33:59,766 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:33:59,766 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 20:33:59,766 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1540423645] [2021-06-05 20:33:59,766 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 20:33:59,766 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:33:59,766 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 20:33:59,766 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:33:59,766 INFO L87 Difference]: Start difference. First operand 1481 states and 4515 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:33:59,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:33:59,928 INFO L93 Difference]: Finished difference Result 1788 states and 5355 transitions. [2021-06-05 20:33:59,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 20:33:59,928 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:33:59,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:33:59,930 INFO L225 Difference]: With dead ends: 1788 [2021-06-05 20:33:59,930 INFO L226 Difference]: Without dead ends: 1595 [2021-06-05 20:33:59,930 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 49.4ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:33:59,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1595 states. [2021-06-05 20:33:59,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1595 to 1441. [2021-06-05 20:33:59,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1441 states, 1440 states have (on average 3.0479166666666666) internal successors, (4389), 1440 states have internal predecessors, (4389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:33:59,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1441 states to 1441 states and 4389 transitions. [2021-06-05 20:33:59,946 INFO L78 Accepts]: Start accepts. Automaton has 1441 states and 4389 transitions. Word has length 26 [2021-06-05 20:33:59,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:33:59,946 INFO L482 AbstractCegarLoop]: Abstraction has 1441 states and 4389 transitions. [2021-06-05 20:33:59,946 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:33:59,946 INFO L276 IsEmpty]: Start isEmpty. Operand 1441 states and 4389 transitions. [2021-06-05 20:33:59,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:33:59,948 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:33:59,948 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:33:59,948 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2021-06-05 20:33:59,948 INFO L430 AbstractCegarLoop]: === Iteration 85 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:33:59,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:33:59,948 INFO L82 PathProgramCache]: Analyzing trace with hash -1883568040, now seen corresponding path program 83 times [2021-06-05 20:33:59,948 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:33:59,948 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1124289842] [2021-06-05 20:33:59,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:33:59,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:34:00,026 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:34:00,027 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:34:00,027 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1124289842] [2021-06-05 20:34:00,027 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1124289842] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:34:00,027 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:34:00,027 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 20:34:00,027 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [981413789] [2021-06-05 20:34:00,027 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 20:34:00,027 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:34:00,027 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 20:34:00,027 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:00,027 INFO L87 Difference]: Start difference. First operand 1441 states and 4389 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:00,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:34:00,194 INFO L93 Difference]: Finished difference Result 1658 states and 4979 transitions. [2021-06-05 20:34:00,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 20:34:00,194 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:34:00,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:34:00,196 INFO L225 Difference]: With dead ends: 1658 [2021-06-05 20:34:00,196 INFO L226 Difference]: Without dead ends: 1573 [2021-06-05 20:34:00,196 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 48.9ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:00,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1573 states. [2021-06-05 20:34:00,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1573 to 1444. [2021-06-05 20:34:00,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1444 states, 1443 states have (on average 3.047124047124047) internal successors, (4397), 1443 states have internal predecessors, (4397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:00,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1444 states to 1444 states and 4397 transitions. [2021-06-05 20:34:00,212 INFO L78 Accepts]: Start accepts. Automaton has 1444 states and 4397 transitions. Word has length 26 [2021-06-05 20:34:00,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:34:00,212 INFO L482 AbstractCegarLoop]: Abstraction has 1444 states and 4397 transitions. [2021-06-05 20:34:00,212 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:00,213 INFO L276 IsEmpty]: Start isEmpty. Operand 1444 states and 4397 transitions. [2021-06-05 20:34:00,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:34:00,214 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:34:00,214 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:34:00,214 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2021-06-05 20:34:00,214 INFO L430 AbstractCegarLoop]: === Iteration 86 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:34:00,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:34:00,214 INFO L82 PathProgramCache]: Analyzing trace with hash -1014123432, now seen corresponding path program 84 times [2021-06-05 20:34:00,215 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:34:00,215 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1959743343] [2021-06-05 20:34:00,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:34:00,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:34:00,275 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:34:00,275 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:34:00,275 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1959743343] [2021-06-05 20:34:00,275 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1959743343] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:34:00,275 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:34:00,275 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 20:34:00,275 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [326768408] [2021-06-05 20:34:00,275 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 20:34:00,275 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:34:00,275 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 20:34:00,276 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:00,276 INFO L87 Difference]: Start difference. First operand 1444 states and 4397 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:00,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:34:00,442 INFO L93 Difference]: Finished difference Result 1729 states and 5190 transitions. [2021-06-05 20:34:00,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 20:34:00,442 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:34:00,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:34:00,444 INFO L225 Difference]: With dead ends: 1729 [2021-06-05 20:34:00,444 INFO L226 Difference]: Without dead ends: 1634 [2021-06-05 20:34:00,444 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 50.1ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:00,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1634 states. [2021-06-05 20:34:00,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1634 to 1464. [2021-06-05 20:34:00,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1464 states, 1463 states have (on average 3.0457963089542037) internal successors, (4456), 1463 states have internal predecessors, (4456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:00,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1464 states to 1464 states and 4456 transitions. [2021-06-05 20:34:00,461 INFO L78 Accepts]: Start accepts. Automaton has 1464 states and 4456 transitions. Word has length 26 [2021-06-05 20:34:00,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:34:00,461 INFO L482 AbstractCegarLoop]: Abstraction has 1464 states and 4456 transitions. [2021-06-05 20:34:00,461 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:00,461 INFO L276 IsEmpty]: Start isEmpty. Operand 1464 states and 4456 transitions. [2021-06-05 20:34:00,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:34:00,462 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:34:00,462 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:34:00,462 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2021-06-05 20:34:00,462 INFO L430 AbstractCegarLoop]: === Iteration 87 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:34:00,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:34:00,463 INFO L82 PathProgramCache]: Analyzing trace with hash -201920844, now seen corresponding path program 85 times [2021-06-05 20:34:00,463 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:34:00,463 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [177853323] [2021-06-05 20:34:00,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:34:00,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:34:00,529 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:34:00,529 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:34:00,529 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [177853323] [2021-06-05 20:34:00,529 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [177853323] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:34:00,529 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:34:00,529 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 20:34:00,529 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1925999607] [2021-06-05 20:34:00,529 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 20:34:00,529 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:34:00,530 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 20:34:00,530 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:00,530 INFO L87 Difference]: Start difference. First operand 1464 states and 4456 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:00,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:34:00,701 INFO L93 Difference]: Finished difference Result 1739 states and 5230 transitions. [2021-06-05 20:34:00,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 20:34:00,702 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:34:00,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:34:00,704 INFO L225 Difference]: With dead ends: 1739 [2021-06-05 20:34:00,704 INFO L226 Difference]: Without dead ends: 1609 [2021-06-05 20:34:00,704 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 51.4ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:00,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1609 states. [2021-06-05 20:34:00,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1609 to 1469. [2021-06-05 20:34:00,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1469 states, 1468 states have (on average 3.034059945504087) internal successors, (4454), 1468 states have internal predecessors, (4454), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:00,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1469 states to 1469 states and 4454 transitions. [2021-06-05 20:34:00,719 INFO L78 Accepts]: Start accepts. Automaton has 1469 states and 4454 transitions. Word has length 26 [2021-06-05 20:34:00,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:34:00,720 INFO L482 AbstractCegarLoop]: Abstraction has 1469 states and 4454 transitions. [2021-06-05 20:34:00,720 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:00,720 INFO L276 IsEmpty]: Start isEmpty. Operand 1469 states and 4454 transitions. [2021-06-05 20:34:00,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:34:00,721 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:34:00,721 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:34:00,721 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2021-06-05 20:34:00,721 INFO L430 AbstractCegarLoop]: === Iteration 88 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:34:00,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:34:00,721 INFO L82 PathProgramCache]: Analyzing trace with hash -2091650058, now seen corresponding path program 86 times [2021-06-05 20:34:00,722 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:34:00,722 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1884660092] [2021-06-05 20:34:00,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:34:00,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:34:00,789 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:34:00,789 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:34:00,789 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1884660092] [2021-06-05 20:34:00,789 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1884660092] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:34:00,789 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:34:00,789 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 20:34:00,789 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1300935324] [2021-06-05 20:34:00,789 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 20:34:00,790 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:34:00,790 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 20:34:00,790 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:00,790 INFO L87 Difference]: Start difference. First operand 1469 states and 4454 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:00,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:34:00,963 INFO L93 Difference]: Finished difference Result 1598 states and 4788 transitions. [2021-06-05 20:34:00,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 20:34:00,964 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:34:00,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:34:00,965 INFO L225 Difference]: With dead ends: 1598 [2021-06-05 20:34:00,965 INFO L226 Difference]: Without dead ends: 1519 [2021-06-05 20:34:00,966 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 49.1ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:00,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1519 states. [2021-06-05 20:34:00,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1519 to 1469. [2021-06-05 20:34:00,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1469 states, 1468 states have (on average 3.034059945504087) internal successors, (4454), 1468 states have internal predecessors, (4454), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:00,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1469 states to 1469 states and 4454 transitions. [2021-06-05 20:34:00,981 INFO L78 Accepts]: Start accepts. Automaton has 1469 states and 4454 transitions. Word has length 26 [2021-06-05 20:34:00,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:34:00,981 INFO L482 AbstractCegarLoop]: Abstraction has 1469 states and 4454 transitions. [2021-06-05 20:34:00,981 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:00,981 INFO L276 IsEmpty]: Start isEmpty. Operand 1469 states and 4454 transitions. [2021-06-05 20:34:00,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:34:00,983 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:34:00,983 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:34:00,983 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2021-06-05 20:34:00,983 INFO L430 AbstractCegarLoop]: === Iteration 89 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:34:00,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:34:00,984 INFO L82 PathProgramCache]: Analyzing trace with hash -1222205450, now seen corresponding path program 87 times [2021-06-05 20:34:00,984 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:34:00,984 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1344897885] [2021-06-05 20:34:00,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:34:00,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:34:01,049 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:34:01,049 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:34:01,049 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1344897885] [2021-06-05 20:34:01,049 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1344897885] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:34:01,049 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:34:01,049 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 20:34:01,049 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1468644260] [2021-06-05 20:34:01,049 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 20:34:01,049 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:34:01,049 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 20:34:01,050 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:01,050 INFO L87 Difference]: Start difference. First operand 1469 states and 4454 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:01,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:34:01,219 INFO L93 Difference]: Finished difference Result 1617 states and 4837 transitions. [2021-06-05 20:34:01,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 20:34:01,220 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:34:01,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:34:01,221 INFO L225 Difference]: With dead ends: 1617 [2021-06-05 20:34:01,221 INFO L226 Difference]: Without dead ends: 1522 [2021-06-05 20:34:01,221 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 55.5ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:01,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1522 states. [2021-06-05 20:34:01,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1522 to 1471. [2021-06-05 20:34:01,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1471 states, 1470 states have (on average 3.033333333333333) internal successors, (4459), 1470 states have internal predecessors, (4459), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:01,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1471 states to 1471 states and 4459 transitions. [2021-06-05 20:34:01,236 INFO L78 Accepts]: Start accepts. Automaton has 1471 states and 4459 transitions. Word has length 26 [2021-06-05 20:34:01,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:34:01,236 INFO L482 AbstractCegarLoop]: Abstraction has 1471 states and 4459 transitions. [2021-06-05 20:34:01,236 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:01,236 INFO L276 IsEmpty]: Start isEmpty. Operand 1471 states and 4459 transitions. [2021-06-05 20:34:01,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:34:01,238 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:34:01,238 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:34:01,238 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2021-06-05 20:34:01,238 INFO L430 AbstractCegarLoop]: === Iteration 90 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:34:01,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:34:01,238 INFO L82 PathProgramCache]: Analyzing trace with hash 1604050616, now seen corresponding path program 88 times [2021-06-05 20:34:01,238 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:34:01,238 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1867573103] [2021-06-05 20:34:01,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:34:01,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:34:01,296 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:34:01,297 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:34:01,297 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1867573103] [2021-06-05 20:34:01,297 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1867573103] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:34:01,297 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:34:01,297 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 20:34:01,297 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [527563757] [2021-06-05 20:34:01,297 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 20:34:01,297 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:34:01,297 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 20:34:01,297 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:01,297 INFO L87 Difference]: Start difference. First operand 1471 states and 4459 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:01,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:34:01,468 INFO L93 Difference]: Finished difference Result 1682 states and 5045 transitions. [2021-06-05 20:34:01,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 20:34:01,468 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:34:01,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:34:01,470 INFO L225 Difference]: With dead ends: 1682 [2021-06-05 20:34:01,470 INFO L226 Difference]: Without dead ends: 1603 [2021-06-05 20:34:01,470 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 48.5ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:01,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1603 states. [2021-06-05 20:34:01,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1603 to 1470. [2021-06-05 20:34:01,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1470 states, 1469 states have (on average 3.0326752893124573) internal successors, (4455), 1469 states have internal predecessors, (4455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:01,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1470 states to 1470 states and 4455 transitions. [2021-06-05 20:34:01,486 INFO L78 Accepts]: Start accepts. Automaton has 1470 states and 4455 transitions. Word has length 26 [2021-06-05 20:34:01,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:34:01,486 INFO L482 AbstractCegarLoop]: Abstraction has 1470 states and 4455 transitions. [2021-06-05 20:34:01,486 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:01,486 INFO L276 IsEmpty]: Start isEmpty. Operand 1470 states and 4455 transitions. [2021-06-05 20:34:01,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:34:01,487 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:34:01,487 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:34:01,487 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2021-06-05 20:34:01,488 INFO L430 AbstractCegarLoop]: === Iteration 91 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:34:01,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:34:01,488 INFO L82 PathProgramCache]: Analyzing trace with hash 1030653340, now seen corresponding path program 89 times [2021-06-05 20:34:01,488 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:34:01,488 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [364494613] [2021-06-05 20:34:01,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:34:01,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:34:01,550 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:34:01,550 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:34:01,550 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [364494613] [2021-06-05 20:34:01,550 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [364494613] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:34:01,550 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:34:01,550 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 20:34:01,550 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1423407854] [2021-06-05 20:34:01,550 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 20:34:01,550 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:34:01,550 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 20:34:01,551 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:01,551 INFO L87 Difference]: Start difference. First operand 1470 states and 4455 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:01,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:34:01,724 INFO L93 Difference]: Finished difference Result 1669 states and 5007 transitions. [2021-06-05 20:34:01,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 20:34:01,725 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:34:01,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:34:01,727 INFO L225 Difference]: With dead ends: 1669 [2021-06-05 20:34:01,727 INFO L226 Difference]: Without dead ends: 1580 [2021-06-05 20:34:01,727 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 48.6ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:01,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1580 states. [2021-06-05 20:34:01,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1580 to 1469. [2021-06-05 20:34:01,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1469 states, 1468 states have (on average 3.0306539509536785) internal successors, (4449), 1468 states have internal predecessors, (4449), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:01,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1469 states to 1469 states and 4449 transitions. [2021-06-05 20:34:01,742 INFO L78 Accepts]: Start accepts. Automaton has 1469 states and 4449 transitions. Word has length 26 [2021-06-05 20:34:01,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:34:01,742 INFO L482 AbstractCegarLoop]: Abstraction has 1469 states and 4449 transitions. [2021-06-05 20:34:01,742 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:01,742 INFO L276 IsEmpty]: Start isEmpty. Operand 1469 states and 4449 transitions. [2021-06-05 20:34:01,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:34:01,743 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:34:01,743 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:34:01,743 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2021-06-05 20:34:01,743 INFO L430 AbstractCegarLoop]: === Iteration 92 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:34:01,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:34:01,744 INFO L82 PathProgramCache]: Analyzing trace with hash 1617204188, now seen corresponding path program 90 times [2021-06-05 20:34:01,744 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:34:01,744 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [141236569] [2021-06-05 20:34:01,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:34:01,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:34:01,800 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:34:01,800 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:34:01,800 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [141236569] [2021-06-05 20:34:01,800 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [141236569] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:34:01,800 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:34:01,800 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 20:34:01,801 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115870502] [2021-06-05 20:34:01,801 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 20:34:01,801 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:34:01,801 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 20:34:01,801 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:01,801 INFO L87 Difference]: Start difference. First operand 1469 states and 4449 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:01,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:34:01,970 INFO L93 Difference]: Finished difference Result 1654 states and 4951 transitions. [2021-06-05 20:34:01,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 20:34:01,970 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:34:01,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:34:01,972 INFO L225 Difference]: With dead ends: 1654 [2021-06-05 20:34:01,972 INFO L226 Difference]: Without dead ends: 1566 [2021-06-05 20:34:01,972 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 44.6ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:01,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1566 states. [2021-06-05 20:34:01,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1566 to 1470. [2021-06-05 20:34:01,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1470 states, 1469 states have (on average 3.0313138189244384) internal successors, (4453), 1469 states have internal predecessors, (4453), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:01,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1470 states to 1470 states and 4453 transitions. [2021-06-05 20:34:01,987 INFO L78 Accepts]: Start accepts. Automaton has 1470 states and 4453 transitions. Word has length 26 [2021-06-05 20:34:01,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:34:01,988 INFO L482 AbstractCegarLoop]: Abstraction has 1470 states and 4453 transitions. [2021-06-05 20:34:01,988 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:01,988 INFO L276 IsEmpty]: Start isEmpty. Operand 1470 states and 4453 transitions. [2021-06-05 20:34:01,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:34:01,989 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:34:01,989 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:34:01,989 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2021-06-05 20:34:01,989 INFO L430 AbstractCegarLoop]: === Iteration 93 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:34:01,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:34:01,989 INFO L82 PathProgramCache]: Analyzing trace with hash 905136346, now seen corresponding path program 91 times [2021-06-05 20:34:01,990 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:34:01,990 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1879656533] [2021-06-05 20:34:01,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:34:01,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:34:02,068 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:34:02,069 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:34:02,069 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1879656533] [2021-06-05 20:34:02,069 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1879656533] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:34:02,069 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:34:02,069 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 20:34:02,069 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1196027040] [2021-06-05 20:34:02,069 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 20:34:02,069 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:34:02,069 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 20:34:02,069 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:02,069 INFO L87 Difference]: Start difference. First operand 1470 states and 4453 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:02,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:34:02,244 INFO L93 Difference]: Finished difference Result 1673 states and 4993 transitions. [2021-06-05 20:34:02,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 20:34:02,244 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:34:02,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:34:02,246 INFO L225 Difference]: With dead ends: 1673 [2021-06-05 20:34:02,246 INFO L226 Difference]: Without dead ends: 1579 [2021-06-05 20:34:02,246 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 49.5ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:02,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1579 states. [2021-06-05 20:34:02,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1579 to 1475. [2021-06-05 20:34:02,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1475 states, 1474 states have (on average 3.03527815468114) internal successors, (4474), 1474 states have internal predecessors, (4474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:02,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1475 states to 1475 states and 4474 transitions. [2021-06-05 20:34:02,262 INFO L78 Accepts]: Start accepts. Automaton has 1475 states and 4474 transitions. Word has length 26 [2021-06-05 20:34:02,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:34:02,262 INFO L482 AbstractCegarLoop]: Abstraction has 1475 states and 4474 transitions. [2021-06-05 20:34:02,262 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:02,262 INFO L276 IsEmpty]: Start isEmpty. Operand 1475 states and 4474 transitions. [2021-06-05 20:34:02,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:34:02,264 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:34:02,264 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:34:02,264 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2021-06-05 20:34:02,264 INFO L430 AbstractCegarLoop]: === Iteration 94 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:34:02,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:34:02,264 INFO L82 PathProgramCache]: Analyzing trace with hash 1996509272, now seen corresponding path program 92 times [2021-06-05 20:34:02,264 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:34:02,264 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1582222084] [2021-06-05 20:34:02,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:34:02,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:34:02,330 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:34:02,330 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:34:02,330 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1582222084] [2021-06-05 20:34:02,330 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1582222084] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:34:02,330 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:34:02,330 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 20:34:02,330 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1436840720] [2021-06-05 20:34:02,330 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 20:34:02,330 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:34:02,330 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 20:34:02,331 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:02,331 INFO L87 Difference]: Start difference. First operand 1475 states and 4474 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:02,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:34:02,500 INFO L93 Difference]: Finished difference Result 1627 states and 4876 transitions. [2021-06-05 20:34:02,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 20:34:02,500 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:34:02,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:34:02,502 INFO L225 Difference]: With dead ends: 1627 [2021-06-05 20:34:02,502 INFO L226 Difference]: Without dead ends: 1548 [2021-06-05 20:34:02,502 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 53.4ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:02,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1548 states. [2021-06-05 20:34:02,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1548 to 1475. [2021-06-05 20:34:02,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1475 states, 1474 states have (on average 3.03527815468114) internal successors, (4474), 1474 states have internal predecessors, (4474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:02,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1475 states to 1475 states and 4474 transitions. [2021-06-05 20:34:02,518 INFO L78 Accepts]: Start accepts. Automaton has 1475 states and 4474 transitions. Word has length 26 [2021-06-05 20:34:02,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:34:02,518 INFO L482 AbstractCegarLoop]: Abstraction has 1475 states and 4474 transitions. [2021-06-05 20:34:02,518 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:02,518 INFO L276 IsEmpty]: Start isEmpty. Operand 1475 states and 4474 transitions. [2021-06-05 20:34:02,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:34:02,520 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:34:02,520 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:34:02,520 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2021-06-05 20:34:02,520 INFO L430 AbstractCegarLoop]: === Iteration 95 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:34:02,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:34:02,520 INFO L82 PathProgramCache]: Analyzing trace with hash -1429013416, now seen corresponding path program 93 times [2021-06-05 20:34:02,520 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:34:02,520 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1944096191] [2021-06-05 20:34:02,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:34:02,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:34:02,579 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:34:02,579 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:34:02,579 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1944096191] [2021-06-05 20:34:02,579 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1944096191] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:34:02,579 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:34:02,579 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 20:34:02,579 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1507652219] [2021-06-05 20:34:02,579 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 20:34:02,579 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:34:02,580 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 20:34:02,580 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:02,580 INFO L87 Difference]: Start difference. First operand 1475 states and 4474 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:02,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:34:02,756 INFO L93 Difference]: Finished difference Result 1646 states and 4929 transitions. [2021-06-05 20:34:02,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 20:34:02,756 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:34:02,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:34:02,758 INFO L225 Difference]: With dead ends: 1646 [2021-06-05 20:34:02,758 INFO L226 Difference]: Without dead ends: 1551 [2021-06-05 20:34:02,758 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 49.6ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:02,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1551 states. [2021-06-05 20:34:02,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1551 to 1478. [2021-06-05 20:34:02,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1478 states, 1477 states have (on average 3.034529451591063) internal successors, (4482), 1477 states have internal predecessors, (4482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:02,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1478 states to 1478 states and 4482 transitions. [2021-06-05 20:34:02,773 INFO L78 Accepts]: Start accepts. Automaton has 1478 states and 4482 transitions. Word has length 26 [2021-06-05 20:34:02,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:34:02,774 INFO L482 AbstractCegarLoop]: Abstraction has 1478 states and 4482 transitions. [2021-06-05 20:34:02,774 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:02,774 INFO L276 IsEmpty]: Start isEmpty. Operand 1478 states and 4482 transitions. [2021-06-05 20:34:02,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:34:02,775 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:34:02,775 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:34:02,775 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2021-06-05 20:34:02,775 INFO L430 AbstractCegarLoop]: === Iteration 96 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:34:02,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:34:02,776 INFO L82 PathProgramCache]: Analyzing trace with hash 491670454, now seen corresponding path program 94 times [2021-06-05 20:34:02,776 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:34:02,776 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1207096329] [2021-06-05 20:34:02,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:34:02,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:34:02,842 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:34:02,842 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:34:02,842 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1207096329] [2021-06-05 20:34:02,842 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1207096329] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:34:02,842 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:34:02,842 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 20:34:02,842 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1698648285] [2021-06-05 20:34:02,842 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 20:34:02,842 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:34:02,843 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 20:34:02,843 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:02,843 INFO L87 Difference]: Start difference. First operand 1478 states and 4482 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:03,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:34:03,029 INFO L93 Difference]: Finished difference Result 1664 states and 4981 transitions. [2021-06-05 20:34:03,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 20:34:03,030 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:34:03,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:34:03,032 INFO L225 Difference]: With dead ends: 1664 [2021-06-05 20:34:03,032 INFO L226 Difference]: Without dead ends: 1579 [2021-06-05 20:34:03,032 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 51.2ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:03,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1579 states. [2021-06-05 20:34:03,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1579 to 1477. [2021-06-05 20:34:03,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1477 states, 1476 states have (on average 3.0318428184281845) internal successors, (4475), 1476 states have internal predecessors, (4475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:03,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1477 states to 1477 states and 4475 transitions. [2021-06-05 20:34:03,048 INFO L78 Accepts]: Start accepts. Automaton has 1477 states and 4475 transitions. Word has length 26 [2021-06-05 20:34:03,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:34:03,048 INFO L482 AbstractCegarLoop]: Abstraction has 1477 states and 4475 transitions. [2021-06-05 20:34:03,048 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:03,048 INFO L276 IsEmpty]: Start isEmpty. Operand 1477 states and 4475 transitions. [2021-06-05 20:34:03,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:34:03,049 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:34:03,049 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:34:03,050 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2021-06-05 20:34:03,050 INFO L430 AbstractCegarLoop]: === Iteration 97 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:34:03,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:34:03,050 INFO L82 PathProgramCache]: Analyzing trace with hash -1683359150, now seen corresponding path program 95 times [2021-06-05 20:34:03,050 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:34:03,050 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1545017197] [2021-06-05 20:34:03,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:34:03,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:34:03,132 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:34:03,132 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:34:03,132 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1545017197] [2021-06-05 20:34:03,132 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1545017197] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:34:03,132 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:34:03,132 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 20:34:03,132 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1212415726] [2021-06-05 20:34:03,132 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 20:34:03,132 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:34:03,133 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 20:34:03,133 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:03,133 INFO L87 Difference]: Start difference. First operand 1477 states and 4475 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:03,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:34:03,308 INFO L93 Difference]: Finished difference Result 1654 states and 4965 transitions. [2021-06-05 20:34:03,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 20:34:03,308 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:34:03,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:34:03,310 INFO L225 Difference]: With dead ends: 1654 [2021-06-05 20:34:03,310 INFO L226 Difference]: Without dead ends: 1554 [2021-06-05 20:34:03,310 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 51.8ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:03,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1554 states. [2021-06-05 20:34:03,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1554 to 1475. [2021-06-05 20:34:03,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1475 states, 1474 states have (on average 3.0345997286295794) internal successors, (4473), 1474 states have internal predecessors, (4473), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:03,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1475 states to 1475 states and 4473 transitions. [2021-06-05 20:34:03,326 INFO L78 Accepts]: Start accepts. Automaton has 1475 states and 4473 transitions. Word has length 26 [2021-06-05 20:34:03,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:34:03,326 INFO L482 AbstractCegarLoop]: Abstraction has 1475 states and 4473 transitions. [2021-06-05 20:34:03,326 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:03,326 INFO L276 IsEmpty]: Start isEmpty. Operand 1475 states and 4473 transitions. [2021-06-05 20:34:03,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:34:03,327 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:34:03,327 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:34:03,327 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2021-06-05 20:34:03,327 INFO L430 AbstractCegarLoop]: === Iteration 98 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:34:03,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:34:03,328 INFO L82 PathProgramCache]: Analyzing trace with hash 553881150, now seen corresponding path program 96 times [2021-06-05 20:34:03,328 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:34:03,328 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1776122169] [2021-06-05 20:34:03,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:34:03,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:34:03,389 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:34:03,389 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:34:03,389 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1776122169] [2021-06-05 20:34:03,389 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1776122169] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:34:03,389 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:34:03,390 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 20:34:03,390 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [170973710] [2021-06-05 20:34:03,390 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 20:34:03,390 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:34:03,390 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 20:34:03,390 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:03,390 INFO L87 Difference]: Start difference. First operand 1475 states and 4473 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:03,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:34:03,559 INFO L93 Difference]: Finished difference Result 1649 states and 4952 transitions. [2021-06-05 20:34:03,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 20:34:03,560 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:34:03,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:34:03,562 INFO L225 Difference]: With dead ends: 1649 [2021-06-05 20:34:03,562 INFO L226 Difference]: Without dead ends: 1561 [2021-06-05 20:34:03,562 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 49.4ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:03,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1561 states. [2021-06-05 20:34:03,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1561 to 1481. [2021-06-05 20:34:03,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1481 states, 1480 states have (on average 3.0344594594594594) internal successors, (4491), 1480 states have internal predecessors, (4491), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:03,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1481 states to 1481 states and 4491 transitions. [2021-06-05 20:34:03,577 INFO L78 Accepts]: Start accepts. Automaton has 1481 states and 4491 transitions. Word has length 26 [2021-06-05 20:34:03,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:34:03,577 INFO L482 AbstractCegarLoop]: Abstraction has 1481 states and 4491 transitions. [2021-06-05 20:34:03,577 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:03,577 INFO L276 IsEmpty]: Start isEmpty. Operand 1481 states and 4491 transitions. [2021-06-05 20:34:03,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:34:03,579 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:34:03,579 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:34:03,579 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2021-06-05 20:34:03,579 INFO L430 AbstractCegarLoop]: === Iteration 99 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:34:03,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:34:03,579 INFO L82 PathProgramCache]: Analyzing trace with hash -158186692, now seen corresponding path program 97 times [2021-06-05 20:34:03,579 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:34:03,579 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [773946948] [2021-06-05 20:34:03,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:34:03,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:34:03,638 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:34:03,638 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:34:03,638 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [773946948] [2021-06-05 20:34:03,638 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [773946948] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:34:03,638 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:34:03,638 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 20:34:03,638 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1326095626] [2021-06-05 20:34:03,639 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 20:34:03,639 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:34:03,639 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 20:34:03,639 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:03,639 INFO L87 Difference]: Start difference. First operand 1481 states and 4491 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:03,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:34:03,808 INFO L93 Difference]: Finished difference Result 1675 states and 4997 transitions. [2021-06-05 20:34:03,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 20:34:03,808 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:34:03,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:34:03,810 INFO L225 Difference]: With dead ends: 1675 [2021-06-05 20:34:03,810 INFO L226 Difference]: Without dead ends: 1583 [2021-06-05 20:34:03,810 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 49.8ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:03,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1583 states. [2021-06-05 20:34:03,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1583 to 1479. [2021-06-05 20:34:03,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1479 states, 1478 states have (on average 3.031123139377537) internal successors, (4480), 1478 states have internal predecessors, (4480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:03,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1479 states to 1479 states and 4480 transitions. [2021-06-05 20:34:03,826 INFO L78 Accepts]: Start accepts. Automaton has 1479 states and 4480 transitions. Word has length 26 [2021-06-05 20:34:03,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:34:03,826 INFO L482 AbstractCegarLoop]: Abstraction has 1479 states and 4480 transitions. [2021-06-05 20:34:03,826 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:03,826 INFO L276 IsEmpty]: Start isEmpty. Operand 1479 states and 4480 transitions. [2021-06-05 20:34:03,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:34:03,827 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:34:03,827 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:34:03,828 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2021-06-05 20:34:03,828 INFO L430 AbstractCegarLoop]: === Iteration 100 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:34:03,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:34:03,828 INFO L82 PathProgramCache]: Analyzing trace with hash -838263396, now seen corresponding path program 98 times [2021-06-05 20:34:03,828 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:34:03,828 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [655228978] [2021-06-05 20:34:03,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:34:03,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:34:03,889 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:34:03,889 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:34:03,889 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [655228978] [2021-06-05 20:34:03,889 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [655228978] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:34:03,889 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:34:03,889 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 20:34:03,889 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [393989784] [2021-06-05 20:34:03,890 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 20:34:03,890 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:34:03,890 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 20:34:03,890 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:03,890 INFO L87 Difference]: Start difference. First operand 1479 states and 4480 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:04,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:34:04,057 INFO L93 Difference]: Finished difference Result 1599 states and 4788 transitions. [2021-06-05 20:34:04,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 20:34:04,057 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:34:04,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:34:04,059 INFO L225 Difference]: With dead ends: 1599 [2021-06-05 20:34:04,059 INFO L226 Difference]: Without dead ends: 1480 [2021-06-05 20:34:04,059 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 51.4ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:04,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1480 states. [2021-06-05 20:34:04,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1480 to 1444. [2021-06-05 20:34:04,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1444 states, 1443 states have (on average 3.044352044352044) internal successors, (4393), 1443 states have internal predecessors, (4393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:04,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1444 states to 1444 states and 4393 transitions. [2021-06-05 20:34:04,075 INFO L78 Accepts]: Start accepts. Automaton has 1444 states and 4393 transitions. Word has length 26 [2021-06-05 20:34:04,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:34:04,075 INFO L482 AbstractCegarLoop]: Abstraction has 1444 states and 4393 transitions. [2021-06-05 20:34:04,075 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:04,075 INFO L276 IsEmpty]: Start isEmpty. Operand 1444 states and 4393 transitions. [2021-06-05 20:34:04,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:34:04,076 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:34:04,076 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:34:04,076 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2021-06-05 20:34:04,076 INFO L430 AbstractCegarLoop]: === Iteration 101 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:34:04,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:34:04,077 INFO L82 PathProgramCache]: Analyzing trace with hash -2101954, now seen corresponding path program 99 times [2021-06-05 20:34:04,077 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:34:04,077 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1150158965] [2021-06-05 20:34:04,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:34:04,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:34:04,122 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:34:04,122 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:34:04,122 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1150158965] [2021-06-05 20:34:04,122 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1150158965] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:34:04,122 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:34:04,122 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-05 20:34:04,122 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1524623884] [2021-06-05 20:34:04,122 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:34:04,122 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:34:04,123 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:34:04,123 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:34:04,123 INFO L87 Difference]: Start difference. First operand 1444 states and 4393 transitions. Second operand has 8 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 7 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:04,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:34:04,222 INFO L93 Difference]: Finished difference Result 1798 states and 5382 transitions. [2021-06-05 20:34:04,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:34:04,222 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 7 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:34:04,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:34:04,224 INFO L225 Difference]: With dead ends: 1798 [2021-06-05 20:34:04,224 INFO L226 Difference]: Without dead ends: 1641 [2021-06-05 20:34:04,224 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 31.7ms TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:34:04,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1641 states. [2021-06-05 20:34:04,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1641 to 1518. [2021-06-05 20:34:04,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1518 states, 1517 states have (on average 3.03955174686882) internal successors, (4611), 1517 states have internal predecessors, (4611), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:04,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1518 states to 1518 states and 4611 transitions. [2021-06-05 20:34:04,246 INFO L78 Accepts]: Start accepts. Automaton has 1518 states and 4611 transitions. Word has length 26 [2021-06-05 20:34:04,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:34:04,246 INFO L482 AbstractCegarLoop]: Abstraction has 1518 states and 4611 transitions. [2021-06-05 20:34:04,246 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 7 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:04,246 INFO L276 IsEmpty]: Start isEmpty. Operand 1518 states and 4611 transitions. [2021-06-05 20:34:04,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:34:04,248 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:34:04,248 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:34:04,248 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2021-06-05 20:34:04,248 INFO L430 AbstractCegarLoop]: === Iteration 102 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:34:04,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:34:04,248 INFO L82 PathProgramCache]: Analyzing trace with hash -861686948, now seen corresponding path program 100 times [2021-06-05 20:34:04,248 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:34:04,248 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1979716530] [2021-06-05 20:34:04,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:34:04,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:34:04,300 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:34:04,300 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:34:04,300 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1979716530] [2021-06-05 20:34:04,300 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1979716530] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:34:04,300 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:34:04,300 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:34:04,300 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1673396809] [2021-06-05 20:34:04,300 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-05 20:34:04,300 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:34:04,301 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-05 20:34:04,301 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:34:04,301 INFO L87 Difference]: Start difference. First operand 1518 states and 4611 transitions. Second operand has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:04,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:34:04,439 INFO L93 Difference]: Finished difference Result 1800 states and 5385 transitions. [2021-06-05 20:34:04,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-05 20:34:04,439 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:34:04,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:34:04,441 INFO L225 Difference]: With dead ends: 1800 [2021-06-05 20:34:04,441 INFO L226 Difference]: Without dead ends: 1650 [2021-06-05 20:34:04,441 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 39.7ms TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:34:04,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1650 states. [2021-06-05 20:34:04,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1650 to 1502. [2021-06-05 20:34:04,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1502 states, 1501 states have (on average 3.0439706862091938) internal successors, (4569), 1501 states have internal predecessors, (4569), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:04,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1502 states to 1502 states and 4569 transitions. [2021-06-05 20:34:04,459 INFO L78 Accepts]: Start accepts. Automaton has 1502 states and 4569 transitions. Word has length 26 [2021-06-05 20:34:04,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:34:04,459 INFO L482 AbstractCegarLoop]: Abstraction has 1502 states and 4569 transitions. [2021-06-05 20:34:04,459 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:04,459 INFO L276 IsEmpty]: Start isEmpty. Operand 1502 states and 4569 transitions. [2021-06-05 20:34:04,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:34:04,461 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:34:04,461 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:34:04,461 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2021-06-05 20:34:04,461 INFO L430 AbstractCegarLoop]: === Iteration 103 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:34:04,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:34:04,461 INFO L82 PathProgramCache]: Analyzing trace with hash -371708032, now seen corresponding path program 101 times [2021-06-05 20:34:04,461 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:34:04,461 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [206134969] [2021-06-05 20:34:04,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:34:04,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:34:04,512 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:34:04,512 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:34:04,512 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [206134969] [2021-06-05 20:34:04,513 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [206134969] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:34:04,513 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:34:04,513 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:34:04,513 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1753126235] [2021-06-05 20:34:04,513 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-05 20:34:04,513 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:34:04,513 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-05 20:34:04,513 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:34:04,513 INFO L87 Difference]: Start difference. First operand 1502 states and 4569 transitions. Second operand has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:04,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:34:04,640 INFO L93 Difference]: Finished difference Result 1960 states and 5843 transitions. [2021-06-05 20:34:04,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-05 20:34:04,641 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:34:04,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:34:04,643 INFO L225 Difference]: With dead ends: 1960 [2021-06-05 20:34:04,643 INFO L226 Difference]: Without dead ends: 1674 [2021-06-05 20:34:04,644 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 40.2ms TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:34:04,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1674 states. [2021-06-05 20:34:04,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1674 to 1624. [2021-06-05 20:34:04,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1624 states, 1623 states have (on average 2.9981515711645104) internal successors, (4866), 1623 states have internal predecessors, (4866), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:04,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1624 states to 1624 states and 4866 transitions. [2021-06-05 20:34:04,662 INFO L78 Accepts]: Start accepts. Automaton has 1624 states and 4866 transitions. Word has length 26 [2021-06-05 20:34:04,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:34:04,662 INFO L482 AbstractCegarLoop]: Abstraction has 1624 states and 4866 transitions. [2021-06-05 20:34:04,662 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:04,663 INFO L276 IsEmpty]: Start isEmpty. Operand 1624 states and 4866 transitions. [2021-06-05 20:34:04,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:34:04,664 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:34:04,664 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:34:04,664 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2021-06-05 20:34:04,664 INFO L430 AbstractCegarLoop]: === Iteration 104 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:34:04,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:34:04,665 INFO L82 PathProgramCache]: Analyzing trace with hash 552334938, now seen corresponding path program 102 times [2021-06-05 20:34:04,665 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:34:04,665 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2023659724] [2021-06-05 20:34:04,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:34:04,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:34:04,720 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:34:04,720 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:34:04,720 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2023659724] [2021-06-05 20:34:04,720 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2023659724] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:34:04,720 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:34:04,720 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 20:34:04,720 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1567030288] [2021-06-05 20:34:04,720 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 20:34:04,721 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:34:04,721 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 20:34:04,721 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:04,721 INFO L87 Difference]: Start difference. First operand 1624 states and 4866 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:04,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:34:04,880 INFO L93 Difference]: Finished difference Result 1845 states and 5416 transitions. [2021-06-05 20:34:04,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 20:34:04,881 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:34:04,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:34:04,882 INFO L225 Difference]: With dead ends: 1845 [2021-06-05 20:34:04,882 INFO L226 Difference]: Without dead ends: 1600 [2021-06-05 20:34:04,883 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 45.4ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:04,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1600 states. [2021-06-05 20:34:04,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1600 to 1516. [2021-06-05 20:34:04,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1516 states, 1515 states have (on average 2.9584158415841584) internal successors, (4482), 1515 states have internal predecessors, (4482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:04,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1516 states to 1516 states and 4482 transitions. [2021-06-05 20:34:04,899 INFO L78 Accepts]: Start accepts. Automaton has 1516 states and 4482 transitions. Word has length 26 [2021-06-05 20:34:04,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:34:04,899 INFO L482 AbstractCegarLoop]: Abstraction has 1516 states and 4482 transitions. [2021-06-05 20:34:04,899 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:04,899 INFO L276 IsEmpty]: Start isEmpty. Operand 1516 states and 4482 transitions. [2021-06-05 20:34:04,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:34:04,900 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:34:04,900 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:34:04,900 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2021-06-05 20:34:04,900 INFO L430 AbstractCegarLoop]: === Iteration 105 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:34:04,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:34:04,901 INFO L82 PathProgramCache]: Analyzing trace with hash -1983958852, now seen corresponding path program 103 times [2021-06-05 20:34:04,901 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:34:04,901 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [501051609] [2021-06-05 20:34:04,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:34:04,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:34:04,965 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:34:04,965 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:34:04,965 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [501051609] [2021-06-05 20:34:04,965 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [501051609] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:34:04,965 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:34:04,965 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 20:34:04,965 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [318106073] [2021-06-05 20:34:04,966 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 20:34:04,966 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:34:04,966 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 20:34:04,966 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:04,966 INFO L87 Difference]: Start difference. First operand 1516 states and 4482 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:05,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:34:05,143 INFO L93 Difference]: Finished difference Result 1776 states and 5183 transitions. [2021-06-05 20:34:05,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 20:34:05,144 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:34:05,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:34:05,145 INFO L225 Difference]: With dead ends: 1776 [2021-06-05 20:34:05,145 INFO L226 Difference]: Without dead ends: 1640 [2021-06-05 20:34:05,145 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 50.6ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:05,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1640 states. [2021-06-05 20:34:05,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1640 to 1518. [2021-06-05 20:34:05,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1518 states, 1517 states have (on average 2.95385629531971) internal successors, (4481), 1517 states have internal predecessors, (4481), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:05,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1518 states to 1518 states and 4481 transitions. [2021-06-05 20:34:05,161 INFO L78 Accepts]: Start accepts. Automaton has 1518 states and 4481 transitions. Word has length 26 [2021-06-05 20:34:05,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:34:05,161 INFO L482 AbstractCegarLoop]: Abstraction has 1518 states and 4481 transitions. [2021-06-05 20:34:05,161 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:05,161 INFO L276 IsEmpty]: Start isEmpty. Operand 1518 states and 4481 transitions. [2021-06-05 20:34:05,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:34:05,162 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:34:05,162 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:34:05,162 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2021-06-05 20:34:05,162 INFO L430 AbstractCegarLoop]: === Iteration 106 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:34:05,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:34:05,163 INFO L82 PathProgramCache]: Analyzing trace with hash 1711741822, now seen corresponding path program 104 times [2021-06-05 20:34:05,163 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:34:05,163 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2052503846] [2021-06-05 20:34:05,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:34:05,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:34:05,224 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:34:05,224 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:34:05,224 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2052503846] [2021-06-05 20:34:05,224 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2052503846] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:34:05,224 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:34:05,224 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 20:34:05,224 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [240278417] [2021-06-05 20:34:05,224 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 20:34:05,224 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:34:05,225 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 20:34:05,225 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:05,225 INFO L87 Difference]: Start difference. First operand 1518 states and 4481 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:05,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:34:05,407 INFO L93 Difference]: Finished difference Result 1746 states and 5066 transitions. [2021-06-05 20:34:05,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 20:34:05,407 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:34:05,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:34:05,410 INFO L225 Difference]: With dead ends: 1746 [2021-06-05 20:34:05,410 INFO L226 Difference]: Without dead ends: 1617 [2021-06-05 20:34:05,410 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 47.2ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:05,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1617 states. [2021-06-05 20:34:05,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1617 to 1514. [2021-06-05 20:34:05,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1514 states, 1513 states have (on average 2.9543952412425645) internal successors, (4470), 1513 states have internal predecessors, (4470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:05,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1514 states to 1514 states and 4470 transitions. [2021-06-05 20:34:05,427 INFO L78 Accepts]: Start accepts. Automaton has 1514 states and 4470 transitions. Word has length 26 [2021-06-05 20:34:05,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:34:05,427 INFO L482 AbstractCegarLoop]: Abstraction has 1514 states and 4470 transitions. [2021-06-05 20:34:05,427 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:05,427 INFO L276 IsEmpty]: Start isEmpty. Operand 1514 states and 4470 transitions. [2021-06-05 20:34:05,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:34:05,429 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:34:05,429 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:34:05,429 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2021-06-05 20:34:05,429 INFO L430 AbstractCegarLoop]: === Iteration 107 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:34:05,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:34:05,430 INFO L82 PathProgramCache]: Analyzing trace with hash 1138344546, now seen corresponding path program 105 times [2021-06-05 20:34:05,430 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:34:05,430 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1339515230] [2021-06-05 20:34:05,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:34:05,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:34:05,487 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:34:05,487 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:34:05,487 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1339515230] [2021-06-05 20:34:05,487 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1339515230] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:34:05,487 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:34:05,487 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 20:34:05,487 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1448782552] [2021-06-05 20:34:05,487 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 20:34:05,488 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:34:05,488 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 20:34:05,488 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:05,488 INFO L87 Difference]: Start difference. First operand 1514 states and 4470 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:05,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:34:05,650 INFO L93 Difference]: Finished difference Result 1698 states and 4924 transitions. [2021-06-05 20:34:05,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 20:34:05,650 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:34:05,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:34:05,652 INFO L225 Difference]: With dead ends: 1698 [2021-06-05 20:34:05,652 INFO L226 Difference]: Without dead ends: 1552 [2021-06-05 20:34:05,652 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 47.7ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:05,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1552 states. [2021-06-05 20:34:05,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1552 to 1502. [2021-06-05 20:34:05,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1502 states, 1501 states have (on average 2.9573617588274486) internal successors, (4439), 1501 states have internal predecessors, (4439), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:05,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1502 states to 1502 states and 4439 transitions. [2021-06-05 20:34:05,667 INFO L78 Accepts]: Start accepts. Automaton has 1502 states and 4439 transitions. Word has length 26 [2021-06-05 20:34:05,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:34:05,667 INFO L482 AbstractCegarLoop]: Abstraction has 1502 states and 4439 transitions. [2021-06-05 20:34:05,668 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:05,668 INFO L276 IsEmpty]: Start isEmpty. Operand 1502 states and 4439 transitions. [2021-06-05 20:34:05,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:34:05,669 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:34:05,669 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:34:05,669 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2021-06-05 20:34:05,669 INFO L430 AbstractCegarLoop]: === Iteration 108 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:34:05,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:34:05,669 INFO L82 PathProgramCache]: Analyzing trace with hash 1141733984, now seen corresponding path program 106 times [2021-06-05 20:34:05,669 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:34:05,669 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1573730255] [2021-06-05 20:34:05,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:34:05,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:34:05,728 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:34:05,728 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:34:05,728 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1573730255] [2021-06-05 20:34:05,728 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1573730255] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:34:05,728 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:34:05,728 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 20:34:05,729 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [38593608] [2021-06-05 20:34:05,729 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 20:34:05,729 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:34:05,729 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 20:34:05,729 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:05,729 INFO L87 Difference]: Start difference. First operand 1502 states and 4439 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:05,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:34:05,888 INFO L93 Difference]: Finished difference Result 1727 states and 5036 transitions. [2021-06-05 20:34:05,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 20:34:05,889 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:34:05,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:34:05,890 INFO L225 Difference]: With dead ends: 1727 [2021-06-05 20:34:05,890 INFO L226 Difference]: Without dead ends: 1598 [2021-06-05 20:34:05,890 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 47.6ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:05,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1598 states. [2021-06-05 20:34:05,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1598 to 1526. [2021-06-05 20:34:05,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1526 states, 1525 states have (on average 2.954098360655738) internal successors, (4505), 1525 states have internal predecessors, (4505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:05,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1526 states to 1526 states and 4505 transitions. [2021-06-05 20:34:05,906 INFO L78 Accepts]: Start accepts. Automaton has 1526 states and 4505 transitions. Word has length 26 [2021-06-05 20:34:05,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:34:05,906 INFO L482 AbstractCegarLoop]: Abstraction has 1526 states and 4505 transitions. [2021-06-05 20:34:05,906 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:05,906 INFO L276 IsEmpty]: Start isEmpty. Operand 1526 states and 4505 transitions. [2021-06-05 20:34:05,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:34:05,908 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:34:05,908 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:34:05,908 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2021-06-05 20:34:05,908 INFO L430 AbstractCegarLoop]: === Iteration 109 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:34:05,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:34:05,908 INFO L82 PathProgramCache]: Analyzing trace with hash 568336708, now seen corresponding path program 107 times [2021-06-05 20:34:05,908 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:34:05,908 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [706752889] [2021-06-05 20:34:05,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:34:05,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:34:05,969 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:34:05,969 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:34:05,969 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [706752889] [2021-06-05 20:34:05,969 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [706752889] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:34:05,969 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:34:05,969 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 20:34:05,969 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [26567430] [2021-06-05 20:34:05,969 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 20:34:05,969 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:34:05,969 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 20:34:05,969 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:05,970 INFO L87 Difference]: Start difference. First operand 1526 states and 4505 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:06,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:34:06,146 INFO L93 Difference]: Finished difference Result 1850 states and 5404 transitions. [2021-06-05 20:34:06,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 20:34:06,146 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:34:06,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:34:06,148 INFO L225 Difference]: With dead ends: 1850 [2021-06-05 20:34:06,148 INFO L226 Difference]: Without dead ends: 1689 [2021-06-05 20:34:06,148 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 48.4ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:06,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1689 states. [2021-06-05 20:34:06,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1689 to 1590. [2021-06-05 20:34:06,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1590 states, 1589 states have (on average 2.947136563876652) internal successors, (4683), 1589 states have internal predecessors, (4683), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:06,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1590 states to 1590 states and 4683 transitions. [2021-06-05 20:34:06,164 INFO L78 Accepts]: Start accepts. Automaton has 1590 states and 4683 transitions. Word has length 26 [2021-06-05 20:34:06,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:34:06,164 INFO L482 AbstractCegarLoop]: Abstraction has 1590 states and 4683 transitions. [2021-06-05 20:34:06,164 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:06,164 INFO L276 IsEmpty]: Start isEmpty. Operand 1590 states and 4683 transitions. [2021-06-05 20:34:06,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:34:06,166 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:34:06,166 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:34:06,166 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2021-06-05 20:34:06,166 INFO L430 AbstractCegarLoop]: === Iteration 110 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:34:06,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:34:06,166 INFO L82 PathProgramCache]: Analyzing trace with hash 442819714, now seen corresponding path program 108 times [2021-06-05 20:34:06,166 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:34:06,166 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [712981988] [2021-06-05 20:34:06,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:34:06,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:34:06,237 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:34:06,238 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:34:06,238 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [712981988] [2021-06-05 20:34:06,238 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [712981988] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:34:06,238 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:34:06,238 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 20:34:06,238 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1358011435] [2021-06-05 20:34:06,238 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 20:34:06,238 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:34:06,238 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 20:34:06,238 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:06,238 INFO L87 Difference]: Start difference. First operand 1590 states and 4683 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:06,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:34:06,401 INFO L93 Difference]: Finished difference Result 1788 states and 5178 transitions. [2021-06-05 20:34:06,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 20:34:06,401 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:34:06,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:34:06,403 INFO L225 Difference]: With dead ends: 1788 [2021-06-05 20:34:06,403 INFO L226 Difference]: Without dead ends: 1636 [2021-06-05 20:34:06,403 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 48.2ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:06,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1636 states. [2021-06-05 20:34:06,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1636 to 1524. [2021-06-05 20:34:06,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1524 states, 1523 states have (on average 2.9507550886408405) internal successors, (4494), 1523 states have internal predecessors, (4494), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:06,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1524 states to 1524 states and 4494 transitions. [2021-06-05 20:34:06,418 INFO L78 Accepts]: Start accepts. Automaton has 1524 states and 4494 transitions. Word has length 26 [2021-06-05 20:34:06,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:34:06,418 INFO L482 AbstractCegarLoop]: Abstraction has 1524 states and 4494 transitions. [2021-06-05 20:34:06,418 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:06,418 INFO L276 IsEmpty]: Start isEmpty. Operand 1524 states and 4494 transitions. [2021-06-05 20:34:06,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:34:06,420 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:34:06,420 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:34:06,420 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2021-06-05 20:34:06,420 INFO L430 AbstractCegarLoop]: === Iteration 111 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:34:06,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:34:06,420 INFO L82 PathProgramCache]: Analyzing trace with hash 1608572506, now seen corresponding path program 109 times [2021-06-05 20:34:06,420 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:34:06,420 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [251410823] [2021-06-05 20:34:06,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:34:06,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:34:06,486 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:34:06,487 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:34:06,487 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [251410823] [2021-06-05 20:34:06,487 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [251410823] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:34:06,487 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:34:06,487 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 20:34:06,487 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1200347420] [2021-06-05 20:34:06,487 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 20:34:06,487 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:34:06,487 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 20:34:06,487 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:06,487 INFO L87 Difference]: Start difference. First operand 1524 states and 4494 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:06,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:34:06,645 INFO L93 Difference]: Finished difference Result 1802 states and 5245 transitions. [2021-06-05 20:34:06,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 20:34:06,645 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:34:06,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:34:06,647 INFO L225 Difference]: With dead ends: 1802 [2021-06-05 20:34:06,647 INFO L226 Difference]: Without dead ends: 1586 [2021-06-05 20:34:06,647 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 47.3ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:06,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1586 states. [2021-06-05 20:34:06,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1586 to 1464. [2021-06-05 20:34:06,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1464 states, 1463 states have (on average 2.9514695830485302) internal successors, (4318), 1463 states have internal predecessors, (4318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:06,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1464 states to 1464 states and 4318 transitions. [2021-06-05 20:34:06,663 INFO L78 Accepts]: Start accepts. Automaton has 1464 states and 4318 transitions. Word has length 26 [2021-06-05 20:34:06,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:34:06,663 INFO L482 AbstractCegarLoop]: Abstraction has 1464 states and 4318 transitions. [2021-06-05 20:34:06,663 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:06,663 INFO L276 IsEmpty]: Start isEmpty. Operand 1464 states and 4318 transitions. [2021-06-05 20:34:06,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:34:06,664 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:34:06,664 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:34:06,664 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2021-06-05 20:34:06,664 INFO L430 AbstractCegarLoop]: === Iteration 112 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:34:06,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:34:06,665 INFO L82 PathProgramCache]: Analyzing trace with hash -2030139044, now seen corresponding path program 110 times [2021-06-05 20:34:06,665 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:34:06,665 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [30242712] [2021-06-05 20:34:06,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:34:06,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:34:06,722 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:34:06,722 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:34:06,722 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [30242712] [2021-06-05 20:34:06,722 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [30242712] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:34:06,722 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:34:06,722 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:34:06,722 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1552687153] [2021-06-05 20:34:06,722 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-05 20:34:06,722 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:34:06,722 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-05 20:34:06,722 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:34:06,723 INFO L87 Difference]: Start difference. First operand 1464 states and 4318 transitions. Second operand has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:06,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:34:06,847 INFO L93 Difference]: Finished difference Result 1765 states and 5135 transitions. [2021-06-05 20:34:06,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-05 20:34:06,848 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:34:06,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:34:06,849 INFO L225 Difference]: With dead ends: 1765 [2021-06-05 20:34:06,849 INFO L226 Difference]: Without dead ends: 1626 [2021-06-05 20:34:06,850 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 43.6ms TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:34:06,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1626 states. [2021-06-05 20:34:06,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1626 to 1511. [2021-06-05 20:34:06,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1511 states, 1510 states have (on average 2.9377483443708607) internal successors, (4436), 1510 states have internal predecessors, (4436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:06,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1511 states to 1511 states and 4436 transitions. [2021-06-05 20:34:06,865 INFO L78 Accepts]: Start accepts. Automaton has 1511 states and 4436 transitions. Word has length 26 [2021-06-05 20:34:06,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:34:06,865 INFO L482 AbstractCegarLoop]: Abstraction has 1511 states and 4436 transitions. [2021-06-05 20:34:06,865 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:06,865 INFO L276 IsEmpty]: Start isEmpty. Operand 1511 states and 4436 transitions. [2021-06-05 20:34:06,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:34:06,867 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:34:06,867 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:34:06,867 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2021-06-05 20:34:06,867 INFO L430 AbstractCegarLoop]: === Iteration 113 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:34:06,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:34:06,867 INFO L82 PathProgramCache]: Analyzing trace with hash 1405243258, now seen corresponding path program 111 times [2021-06-05 20:34:06,867 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:34:06,867 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1578366865] [2021-06-05 20:34:06,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:34:06,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:34:06,922 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:34:06,922 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:34:06,922 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1578366865] [2021-06-05 20:34:06,922 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1578366865] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:34:06,922 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:34:06,923 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 20:34:06,923 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1065489815] [2021-06-05 20:34:06,923 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 20:34:06,923 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:34:06,923 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 20:34:06,923 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:06,923 INFO L87 Difference]: Start difference. First operand 1511 states and 4436 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:07,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:34:07,081 INFO L93 Difference]: Finished difference Result 1727 states and 5019 transitions. [2021-06-05 20:34:07,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 20:34:07,081 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:34:07,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:34:07,083 INFO L225 Difference]: With dead ends: 1727 [2021-06-05 20:34:07,083 INFO L226 Difference]: Without dead ends: 1595 [2021-06-05 20:34:07,083 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 46.7ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:07,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1595 states. [2021-06-05 20:34:07,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1595 to 1473. [2021-06-05 20:34:07,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1473 states, 1472 states have (on average 2.942934782608696) internal successors, (4332), 1472 states have internal predecessors, (4332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:07,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1473 states to 1473 states and 4332 transitions. [2021-06-05 20:34:07,098 INFO L78 Accepts]: Start accepts. Automaton has 1473 states and 4332 transitions. Word has length 26 [2021-06-05 20:34:07,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:34:07,098 INFO L482 AbstractCegarLoop]: Abstraction has 1473 states and 4332 transitions. [2021-06-05 20:34:07,098 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:07,098 INFO L276 IsEmpty]: Start isEmpty. Operand 1473 states and 4332 transitions. [2021-06-05 20:34:07,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:34:07,099 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:34:07,099 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:34:07,099 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2021-06-05 20:34:07,099 INFO L430 AbstractCegarLoop]: === Iteration 114 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:34:07,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:34:07,100 INFO L82 PathProgramCache]: Analyzing trace with hash 1895222174, now seen corresponding path program 112 times [2021-06-05 20:34:07,100 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:34:07,100 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [566297119] [2021-06-05 20:34:07,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:34:07,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:34:07,147 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:34:07,147 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:34:07,147 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [566297119] [2021-06-05 20:34:07,147 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [566297119] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:34:07,147 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:34:07,147 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:34:07,147 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [456282483] [2021-06-05 20:34:07,148 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-05 20:34:07,148 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:34:07,148 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-05 20:34:07,148 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:34:07,148 INFO L87 Difference]: Start difference. First operand 1473 states and 4332 transitions. Second operand has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:07,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:34:07,275 INFO L93 Difference]: Finished difference Result 1775 states and 5127 transitions. [2021-06-05 20:34:07,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-05 20:34:07,276 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:34:07,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:34:07,277 INFO L225 Difference]: With dead ends: 1775 [2021-06-05 20:34:07,277 INFO L226 Difference]: Without dead ends: 1647 [2021-06-05 20:34:07,277 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 35.7ms TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:34:07,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1647 states. [2021-06-05 20:34:07,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1647 to 1525. [2021-06-05 20:34:07,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1525 states, 1524 states have (on average 2.927165354330709) internal successors, (4461), 1524 states have internal predecessors, (4461), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:07,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1525 states to 1525 states and 4461 transitions. [2021-06-05 20:34:07,293 INFO L78 Accepts]: Start accepts. Automaton has 1525 states and 4461 transitions. Word has length 26 [2021-06-05 20:34:07,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:34:07,293 INFO L482 AbstractCegarLoop]: Abstraction has 1525 states and 4461 transitions. [2021-06-05 20:34:07,293 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:07,293 INFO L276 IsEmpty]: Start isEmpty. Operand 1525 states and 4461 transitions. [2021-06-05 20:34:07,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:34:07,294 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:34:07,294 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:34:07,294 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2021-06-05 20:34:07,294 INFO L430 AbstractCegarLoop]: === Iteration 115 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:34:07,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:34:07,295 INFO L82 PathProgramCache]: Analyzing trace with hash -1475702152, now seen corresponding path program 113 times [2021-06-05 20:34:07,295 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:34:07,295 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1120136472] [2021-06-05 20:34:07,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:34:07,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:34:07,371 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:34:07,371 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:34:07,371 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1120136472] [2021-06-05 20:34:07,372 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1120136472] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:34:07,372 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:34:07,372 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 20:34:07,372 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1024881321] [2021-06-05 20:34:07,372 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 20:34:07,372 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:34:07,372 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 20:34:07,372 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:07,372 INFO L87 Difference]: Start difference. First operand 1525 states and 4461 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:07,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:34:07,544 INFO L93 Difference]: Finished difference Result 1738 states and 5008 transitions. [2021-06-05 20:34:07,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 20:34:07,544 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:34:07,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:34:07,546 INFO L225 Difference]: With dead ends: 1738 [2021-06-05 20:34:07,546 INFO L226 Difference]: Without dead ends: 1633 [2021-06-05 20:34:07,546 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 60.4ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:07,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1633 states. [2021-06-05 20:34:07,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1633 to 1501. [2021-06-05 20:34:07,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1501 states, 1500 states have (on average 2.9326666666666665) internal successors, (4399), 1500 states have internal predecessors, (4399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:07,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1501 states to 1501 states and 4399 transitions. [2021-06-05 20:34:07,562 INFO L78 Accepts]: Start accepts. Automaton has 1501 states and 4399 transitions. Word has length 26 [2021-06-05 20:34:07,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:34:07,562 INFO L482 AbstractCegarLoop]: Abstraction has 1501 states and 4399 transitions. [2021-06-05 20:34:07,562 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:07,562 INFO L276 IsEmpty]: Start isEmpty. Operand 1501 states and 4399 transitions. [2021-06-05 20:34:07,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:34:07,564 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:34:07,564 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:34:07,564 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2021-06-05 20:34:07,564 INFO L430 AbstractCegarLoop]: === Iteration 116 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:34:07,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:34:07,564 INFO L82 PathProgramCache]: Analyzing trace with hash 282971354, now seen corresponding path program 114 times [2021-06-05 20:34:07,564 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:34:07,564 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1630410650] [2021-06-05 20:34:07,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:34:07,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:34:07,621 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:34:07,621 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:34:07,621 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1630410650] [2021-06-05 20:34:07,621 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1630410650] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:34:07,621 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:34:07,621 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 20:34:07,621 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [738066956] [2021-06-05 20:34:07,622 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 20:34:07,622 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:34:07,622 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 20:34:07,622 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:07,622 INFO L87 Difference]: Start difference. First operand 1501 states and 4399 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:07,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:34:07,785 INFO L93 Difference]: Finished difference Result 1652 states and 4785 transitions. [2021-06-05 20:34:07,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 20:34:07,785 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:34:07,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:34:07,787 INFO L225 Difference]: With dead ends: 1652 [2021-06-05 20:34:07,787 INFO L226 Difference]: Without dead ends: 1573 [2021-06-05 20:34:07,787 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 48.4ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:07,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1573 states. [2021-06-05 20:34:07,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1573 to 1507. [2021-06-05 20:34:07,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1507 states, 1506 states have (on average 2.9276228419654715) internal successors, (4409), 1506 states have internal predecessors, (4409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:07,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1507 states to 1507 states and 4409 transitions. [2021-06-05 20:34:07,802 INFO L78 Accepts]: Start accepts. Automaton has 1507 states and 4409 transitions. Word has length 26 [2021-06-05 20:34:07,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:34:07,802 INFO L482 AbstractCegarLoop]: Abstraction has 1507 states and 4409 transitions. [2021-06-05 20:34:07,803 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:07,803 INFO L276 IsEmpty]: Start isEmpty. Operand 1507 states and 4409 transitions. [2021-06-05 20:34:07,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:34:07,804 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:34:07,804 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:34:07,804 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2021-06-05 20:34:07,808 INFO L430 AbstractCegarLoop]: === Iteration 117 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:34:07,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:34:07,812 INFO L82 PathProgramCache]: Analyzing trace with hash 1152415962, now seen corresponding path program 115 times [2021-06-05 20:34:07,813 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:34:07,813 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1529054008] [2021-06-05 20:34:07,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:34:07,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:34:07,868 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:34:07,868 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:34:07,868 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1529054008] [2021-06-05 20:34:07,868 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1529054008] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:34:07,868 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:34:07,869 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 20:34:07,869 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1184019386] [2021-06-05 20:34:07,869 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 20:34:07,869 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:34:07,869 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 20:34:07,869 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:07,869 INFO L87 Difference]: Start difference. First operand 1507 states and 4409 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:08,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:34:08,028 INFO L93 Difference]: Finished difference Result 1745 states and 5047 transitions. [2021-06-05 20:34:08,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 20:34:08,028 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:34:08,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:34:08,030 INFO L225 Difference]: With dead ends: 1745 [2021-06-05 20:34:08,030 INFO L226 Difference]: Without dead ends: 1641 [2021-06-05 20:34:08,030 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 46.3ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:08,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1641 states. [2021-06-05 20:34:08,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1641 to 1499. [2021-06-05 20:34:08,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1499 states, 1498 states have (on average 2.9332443257676903) internal successors, (4394), 1498 states have internal predecessors, (4394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:08,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1499 states to 1499 states and 4394 transitions. [2021-06-05 20:34:08,045 INFO L78 Accepts]: Start accepts. Automaton has 1499 states and 4394 transitions. Word has length 26 [2021-06-05 20:34:08,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:34:08,045 INFO L482 AbstractCegarLoop]: Abstraction has 1499 states and 4394 transitions. [2021-06-05 20:34:08,045 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:08,045 INFO L276 IsEmpty]: Start isEmpty. Operand 1499 states and 4394 transitions. [2021-06-05 20:34:08,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:34:08,047 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:34:08,047 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:34:08,047 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116 [2021-06-05 20:34:08,047 INFO L430 AbstractCegarLoop]: === Iteration 118 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:34:08,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:34:08,047 INFO L82 PathProgramCache]: Analyzing trace with hash -316295268, now seen corresponding path program 116 times [2021-06-05 20:34:08,047 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:34:08,047 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [163878265] [2021-06-05 20:34:08,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:34:08,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:34:08,102 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:34:08,103 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:34:08,103 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [163878265] [2021-06-05 20:34:08,103 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [163878265] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:34:08,103 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:34:08,103 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 20:34:08,103 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [775655533] [2021-06-05 20:34:08,103 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 20:34:08,103 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:34:08,103 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 20:34:08,103 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:08,103 INFO L87 Difference]: Start difference. First operand 1499 states and 4394 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:08,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:34:08,267 INFO L93 Difference]: Finished difference Result 1652 states and 4784 transitions. [2021-06-05 20:34:08,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 20:34:08,267 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:34:08,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:34:08,269 INFO L225 Difference]: With dead ends: 1652 [2021-06-05 20:34:08,269 INFO L226 Difference]: Without dead ends: 1573 [2021-06-05 20:34:08,270 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 47.2ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:08,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1573 states. [2021-06-05 20:34:08,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1573 to 1493. [2021-06-05 20:34:08,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1493 states, 1492 states have (on average 2.9383378016085793) internal successors, (4384), 1492 states have internal predecessors, (4384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:08,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1493 states to 1493 states and 4384 transitions. [2021-06-05 20:34:08,285 INFO L78 Accepts]: Start accepts. Automaton has 1493 states and 4384 transitions. Word has length 26 [2021-06-05 20:34:08,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:34:08,285 INFO L482 AbstractCegarLoop]: Abstraction has 1493 states and 4384 transitions. [2021-06-05 20:34:08,285 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:08,285 INFO L276 IsEmpty]: Start isEmpty. Operand 1493 states and 4384 transitions. [2021-06-05 20:34:08,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:34:08,286 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:34:08,286 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:34:08,286 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117 [2021-06-05 20:34:08,286 INFO L430 AbstractCegarLoop]: === Iteration 119 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:34:08,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:34:08,287 INFO L82 PathProgramCache]: Analyzing trace with hash -889692544, now seen corresponding path program 117 times [2021-06-05 20:34:08,287 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:34:08,287 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1169881246] [2021-06-05 20:34:08,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:34:08,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:34:08,350 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:34:08,351 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:34:08,351 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1169881246] [2021-06-05 20:34:08,351 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1169881246] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:34:08,351 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:34:08,351 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 20:34:08,351 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1247118911] [2021-06-05 20:34:08,351 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 20:34:08,351 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:34:08,351 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 20:34:08,351 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:08,351 INFO L87 Difference]: Start difference. First operand 1493 states and 4384 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:08,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:34:08,521 INFO L93 Difference]: Finished difference Result 1700 states and 4918 transitions. [2021-06-05 20:34:08,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 20:34:08,522 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:34:08,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:34:08,524 INFO L225 Difference]: With dead ends: 1700 [2021-06-05 20:34:08,524 INFO L226 Difference]: Without dead ends: 1604 [2021-06-05 20:34:08,524 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 46.9ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:08,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1604 states. [2021-06-05 20:34:08,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1604 to 1481. [2021-06-05 20:34:08,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1481 states, 1480 states have (on average 2.9466216216216217) internal successors, (4361), 1480 states have internal predecessors, (4361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:08,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1481 states to 1481 states and 4361 transitions. [2021-06-05 20:34:08,539 INFO L78 Accepts]: Start accepts. Automaton has 1481 states and 4361 transitions. Word has length 26 [2021-06-05 20:34:08,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:34:08,539 INFO L482 AbstractCegarLoop]: Abstraction has 1481 states and 4361 transitions. [2021-06-05 20:34:08,539 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:08,539 INFO L276 IsEmpty]: Start isEmpty. Operand 1481 states and 4361 transitions. [2021-06-05 20:34:08,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:34:08,540 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:34:08,540 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:34:08,540 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118 [2021-06-05 20:34:08,540 INFO L430 AbstractCegarLoop]: === Iteration 120 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:34:08,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:34:08,540 INFO L82 PathProgramCache]: Analyzing trace with hash -664852864, now seen corresponding path program 118 times [2021-06-05 20:34:08,541 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:34:08,541 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [426982342] [2021-06-05 20:34:08,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:34:08,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:34:08,595 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:34:08,596 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:34:08,596 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [426982342] [2021-06-05 20:34:08,596 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [426982342] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:34:08,596 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:34:08,596 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:34:08,596 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1160753522] [2021-06-05 20:34:08,596 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-05 20:34:08,596 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:34:08,596 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-05 20:34:08,596 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:34:08,596 INFO L87 Difference]: Start difference. First operand 1481 states and 4361 transitions. Second operand has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:08,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:34:08,724 INFO L93 Difference]: Finished difference Result 1724 states and 4976 transitions. [2021-06-05 20:34:08,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-05 20:34:08,724 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:34:08,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:34:08,726 INFO L225 Difference]: With dead ends: 1724 [2021-06-05 20:34:08,726 INFO L226 Difference]: Without dead ends: 1560 [2021-06-05 20:34:08,726 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 38.2ms TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:34:08,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1560 states. [2021-06-05 20:34:08,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1560 to 1470. [2021-06-05 20:34:08,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1470 states, 1469 states have (on average 2.933287950987066) internal successors, (4309), 1469 states have internal predecessors, (4309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:08,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1470 states to 1470 states and 4309 transitions. [2021-06-05 20:34:08,741 INFO L78 Accepts]: Start accepts. Automaton has 1470 states and 4309 transitions. Word has length 26 [2021-06-05 20:34:08,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:34:08,741 INFO L482 AbstractCegarLoop]: Abstraction has 1470 states and 4309 transitions. [2021-06-05 20:34:08,741 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:08,741 INFO L276 IsEmpty]: Start isEmpty. Operand 1470 states and 4309 transitions. [2021-06-05 20:34:08,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:34:08,742 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:34:08,742 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:34:08,742 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119 [2021-06-05 20:34:08,743 INFO L430 AbstractCegarLoop]: === Iteration 121 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:34:08,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:34:08,743 INFO L82 PathProgramCache]: Analyzing trace with hash 259190106, now seen corresponding path program 119 times [2021-06-05 20:34:08,743 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:34:08,743 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2077677626] [2021-06-05 20:34:08,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:34:08,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:34:08,802 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:34:08,802 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:34:08,802 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2077677626] [2021-06-05 20:34:08,802 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2077677626] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:34:08,802 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:34:08,802 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 20:34:08,802 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [712856499] [2021-06-05 20:34:08,802 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 20:34:08,802 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:34:08,803 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 20:34:08,803 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:08,803 INFO L87 Difference]: Start difference. First operand 1470 states and 4309 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:08,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:34:08,964 INFO L93 Difference]: Finished difference Result 1671 states and 4816 transitions. [2021-06-05 20:34:08,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 20:34:08,965 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:34:08,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:34:08,966 INFO L225 Difference]: With dead ends: 1671 [2021-06-05 20:34:08,966 INFO L226 Difference]: Without dead ends: 1566 [2021-06-05 20:34:08,967 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 48.0ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:08,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1566 states. [2021-06-05 20:34:08,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1566 to 1446. [2021-06-05 20:34:08,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1446 states, 1445 states have (on average 2.9363321799307958) internal successors, (4243), 1445 states have internal predecessors, (4243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:08,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1446 states to 1446 states and 4243 transitions. [2021-06-05 20:34:08,982 INFO L78 Accepts]: Start accepts. Automaton has 1446 states and 4243 transitions. Word has length 26 [2021-06-05 20:34:08,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:34:08,982 INFO L482 AbstractCegarLoop]: Abstraction has 1446 states and 4243 transitions. [2021-06-05 20:34:08,982 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:08,982 INFO L276 IsEmpty]: Start isEmpty. Operand 1446 states and 4243 transitions. [2021-06-05 20:34:08,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:34:08,984 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:34:08,984 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:34:08,984 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120 [2021-06-05 20:34:08,984 INFO L430 AbstractCegarLoop]: === Iteration 122 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:34:08,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:34:08,984 INFO L82 PathProgramCache]: Analyzing trace with hash 376447608, now seen corresponding path program 120 times [2021-06-05 20:34:08,984 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:34:08,984 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [835507358] [2021-06-05 20:34:08,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:34:08,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:34:09,050 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:34:09,051 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:34:09,051 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [835507358] [2021-06-05 20:34:09,051 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [835507358] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:34:09,051 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:34:09,051 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 20:34:09,051 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1075707538] [2021-06-05 20:34:09,051 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 20:34:09,051 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:34:09,051 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 20:34:09,051 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:09,051 INFO L87 Difference]: Start difference. First operand 1446 states and 4243 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:09,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:34:09,216 INFO L93 Difference]: Finished difference Result 1597 states and 4640 transitions. [2021-06-05 20:34:09,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 20:34:09,216 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:34:09,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:34:09,218 INFO L225 Difference]: With dead ends: 1597 [2021-06-05 20:34:09,218 INFO L226 Difference]: Without dead ends: 1518 [2021-06-05 20:34:09,218 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 44.8ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:09,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1518 states. [2021-06-05 20:34:09,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1518 to 1448. [2021-06-05 20:34:09,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1448 states, 1447 states have (on average 2.9371112646855564) internal successors, (4250), 1447 states have internal predecessors, (4250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:09,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1448 states to 1448 states and 4250 transitions. [2021-06-05 20:34:09,233 INFO L78 Accepts]: Start accepts. Automaton has 1448 states and 4250 transitions. Word has length 26 [2021-06-05 20:34:09,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:34:09,233 INFO L482 AbstractCegarLoop]: Abstraction has 1448 states and 4250 transitions. [2021-06-05 20:34:09,233 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:09,233 INFO L276 IsEmpty]: Start isEmpty. Operand 1448 states and 4250 transitions. [2021-06-05 20:34:09,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:34:09,234 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:34:09,235 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:34:09,235 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121 [2021-06-05 20:34:09,235 INFO L430 AbstractCegarLoop]: === Iteration 123 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:34:09,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:34:09,235 INFO L82 PathProgramCache]: Analyzing trace with hash 1599135360, now seen corresponding path program 121 times [2021-06-05 20:34:09,235 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:34:09,235 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1055345212] [2021-06-05 20:34:09,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:34:09,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:34:09,319 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:34:09,319 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:34:09,319 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1055345212] [2021-06-05 20:34:09,319 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1055345212] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:34:09,319 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:34:09,319 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 20:34:09,319 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1979097008] [2021-06-05 20:34:09,319 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 20:34:09,319 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:34:09,319 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 20:34:09,319 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:09,319 INFO L87 Difference]: Start difference. First operand 1448 states and 4250 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:09,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:34:09,533 INFO L93 Difference]: Finished difference Result 1668 states and 4799 transitions. [2021-06-05 20:34:09,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 20:34:09,533 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:34:09,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:34:09,535 INFO L225 Difference]: With dead ends: 1668 [2021-06-05 20:34:09,535 INFO L226 Difference]: Without dead ends: 1579 [2021-06-05 20:34:09,535 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 59.1ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:09,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1579 states. [2021-06-05 20:34:09,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1579 to 1445. [2021-06-05 20:34:09,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1445 states, 1444 states have (on average 2.9335180055401664) internal successors, (4236), 1444 states have internal predecessors, (4236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:09,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1445 states to 1445 states and 4236 transitions. [2021-06-05 20:34:09,551 INFO L78 Accepts]: Start accepts. Automaton has 1445 states and 4236 transitions. Word has length 26 [2021-06-05 20:34:09,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:34:09,551 INFO L482 AbstractCegarLoop]: Abstraction has 1445 states and 4236 transitions. [2021-06-05 20:34:09,551 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:09,552 INFO L276 IsEmpty]: Start isEmpty. Operand 1445 states and 4236 transitions. [2021-06-05 20:34:09,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:34:09,553 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:34:09,553 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:34:09,553 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable122 [2021-06-05 20:34:09,553 INFO L430 AbstractCegarLoop]: === Iteration 124 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:34:09,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:34:09,553 INFO L82 PathProgramCache]: Analyzing trace with hash -1192480934, now seen corresponding path program 122 times [2021-06-05 20:34:09,553 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:34:09,553 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1077023902] [2021-06-05 20:34:09,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:34:09,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:34:09,607 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:34:09,608 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:34:09,608 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1077023902] [2021-06-05 20:34:09,608 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1077023902] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:34:09,608 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:34:09,608 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 20:34:09,608 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [160100580] [2021-06-05 20:34:09,608 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 20:34:09,608 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:34:09,608 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 20:34:09,608 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:09,608 INFO L87 Difference]: Start difference. First operand 1445 states and 4236 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:09,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:34:09,766 INFO L93 Difference]: Finished difference Result 1656 states and 4808 transitions. [2021-06-05 20:34:09,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 20:34:09,767 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:34:09,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:34:09,769 INFO L225 Difference]: With dead ends: 1656 [2021-06-05 20:34:09,769 INFO L226 Difference]: Without dead ends: 1553 [2021-06-05 20:34:09,769 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 45.6ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:09,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1553 states. [2021-06-05 20:34:09,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1553 to 1387. [2021-06-05 20:34:09,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1387 states, 1386 states have (on average 2.9552669552669553) internal successors, (4096), 1386 states have internal predecessors, (4096), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:09,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1387 states to 1387 states and 4096 transitions. [2021-06-05 20:34:09,784 INFO L78 Accepts]: Start accepts. Automaton has 1387 states and 4096 transitions. Word has length 26 [2021-06-05 20:34:09,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:34:09,784 INFO L482 AbstractCegarLoop]: Abstraction has 1387 states and 4096 transitions. [2021-06-05 20:34:09,784 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:09,784 INFO L276 IsEmpty]: Start isEmpty. Operand 1387 states and 4096 transitions. [2021-06-05 20:34:09,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:34:09,785 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:34:09,785 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:34:09,785 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable123 [2021-06-05 20:34:09,785 INFO L430 AbstractCegarLoop]: === Iteration 125 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:34:09,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:34:09,785 INFO L82 PathProgramCache]: Analyzing trace with hash -938795814, now seen corresponding path program 123 times [2021-06-05 20:34:09,786 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:34:09,786 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [832684262] [2021-06-05 20:34:09,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:34:09,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:34:09,845 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:34:09,845 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:34:09,845 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [832684262] [2021-06-05 20:34:09,845 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [832684262] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:34:09,845 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:34:09,845 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 20:34:09,845 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [908809577] [2021-06-05 20:34:09,846 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 20:34:09,846 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:34:09,846 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 20:34:09,846 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:09,846 INFO L87 Difference]: Start difference. First operand 1387 states and 4096 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:10,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:34:10,007 INFO L93 Difference]: Finished difference Result 1532 states and 4467 transitions. [2021-06-05 20:34:10,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 20:34:10,007 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:34:10,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:34:10,009 INFO L225 Difference]: With dead ends: 1532 [2021-06-05 20:34:10,009 INFO L226 Difference]: Without dead ends: 1453 [2021-06-05 20:34:10,009 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 45.7ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:10,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1453 states. [2021-06-05 20:34:10,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1453 to 1388. [2021-06-05 20:34:10,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1388 states, 1387 states have (on average 2.9560201874549388) internal successors, (4100), 1387 states have internal predecessors, (4100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:10,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1388 states to 1388 states and 4100 transitions. [2021-06-05 20:34:10,023 INFO L78 Accepts]: Start accepts. Automaton has 1388 states and 4100 transitions. Word has length 26 [2021-06-05 20:34:10,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:34:10,023 INFO L482 AbstractCegarLoop]: Abstraction has 1388 states and 4100 transitions. [2021-06-05 20:34:10,024 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:10,024 INFO L276 IsEmpty]: Start isEmpty. Operand 1388 states and 4100 transitions. [2021-06-05 20:34:10,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:34:10,025 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:34:10,025 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:34:10,025 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable124 [2021-06-05 20:34:10,025 INFO L430 AbstractCegarLoop]: === Iteration 126 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:34:10,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:34:10,025 INFO L82 PathProgramCache]: Analyzing trace with hash -69351206, now seen corresponding path program 124 times [2021-06-05 20:34:10,025 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:34:10,025 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [529301896] [2021-06-05 20:34:10,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:34:10,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:34:10,095 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:34:10,095 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:34:10,096 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [529301896] [2021-06-05 20:34:10,096 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [529301896] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:34:10,096 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:34:10,096 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 20:34:10,096 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [911506737] [2021-06-05 20:34:10,096 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 20:34:10,096 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:34:10,096 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 20:34:10,096 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:10,096 INFO L87 Difference]: Start difference. First operand 1388 states and 4100 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:10,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:34:10,262 INFO L93 Difference]: Finished difference Result 1568 states and 4567 transitions. [2021-06-05 20:34:10,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 20:34:10,263 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:34:10,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:34:10,264 INFO L225 Difference]: With dead ends: 1568 [2021-06-05 20:34:10,264 INFO L226 Difference]: Without dead ends: 1464 [2021-06-05 20:34:10,264 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 59.3ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:10,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1464 states. [2021-06-05 20:34:10,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1464 to 1391. [2021-06-05 20:34:10,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1391 states, 1390 states have (on average 2.956115107913669) internal successors, (4109), 1390 states have internal predecessors, (4109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:10,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1391 states to 1391 states and 4109 transitions. [2021-06-05 20:34:10,278 INFO L78 Accepts]: Start accepts. Automaton has 1391 states and 4109 transitions. Word has length 26 [2021-06-05 20:34:10,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:34:10,278 INFO L482 AbstractCegarLoop]: Abstraction has 1391 states and 4109 transitions. [2021-06-05 20:34:10,278 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:10,278 INFO L276 IsEmpty]: Start isEmpty. Operand 1391 states and 4109 transitions. [2021-06-05 20:34:10,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:34:10,280 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:34:10,280 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:34:10,280 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable125 [2021-06-05 20:34:10,280 INFO L430 AbstractCegarLoop]: === Iteration 127 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:34:10,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:34:10,280 INFO L82 PathProgramCache]: Analyzing trace with hash -1538062436, now seen corresponding path program 125 times [2021-06-05 20:34:10,280 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:34:10,280 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1451869256] [2021-06-05 20:34:10,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:34:10,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:34:10,344 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:34:10,344 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:34:10,344 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1451869256] [2021-06-05 20:34:10,344 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1451869256] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:34:10,344 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:34:10,344 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 20:34:10,344 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1820030456] [2021-06-05 20:34:10,345 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 20:34:10,345 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:34:10,345 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 20:34:10,345 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:10,345 INFO L87 Difference]: Start difference. First operand 1391 states and 4109 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:10,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:34:10,514 INFO L93 Difference]: Finished difference Result 1536 states and 4479 transitions. [2021-06-05 20:34:10,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 20:34:10,515 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:34:10,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:34:10,516 INFO L225 Difference]: With dead ends: 1536 [2021-06-05 20:34:10,516 INFO L226 Difference]: Without dead ends: 1457 [2021-06-05 20:34:10,517 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 48.7ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:10,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1457 states. [2021-06-05 20:34:10,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1457 to 1392. [2021-06-05 20:34:10,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1392 states, 1391 states have (on average 2.9568655643421997) internal successors, (4113), 1391 states have internal predecessors, (4113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:10,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1392 states to 1392 states and 4113 transitions. [2021-06-05 20:34:10,530 INFO L78 Accepts]: Start accepts. Automaton has 1392 states and 4113 transitions. Word has length 26 [2021-06-05 20:34:10,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:34:10,530 INFO L482 AbstractCegarLoop]: Abstraction has 1392 states and 4113 transitions. [2021-06-05 20:34:10,530 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:10,530 INFO L276 IsEmpty]: Start isEmpty. Operand 1392 states and 4113 transitions. [2021-06-05 20:34:10,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:34:10,532 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:34:10,532 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:34:10,532 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable126 [2021-06-05 20:34:10,532 INFO L430 AbstractCegarLoop]: === Iteration 128 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:34:10,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:34:10,533 INFO L82 PathProgramCache]: Analyzing trace with hash -2111459712, now seen corresponding path program 126 times [2021-06-05 20:34:10,533 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:34:10,533 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1332363098] [2021-06-05 20:34:10,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:34:10,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:34:10,602 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:34:10,602 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:34:10,602 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1332363098] [2021-06-05 20:34:10,602 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1332363098] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:34:10,602 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:34:10,602 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 20:34:10,602 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1735042027] [2021-06-05 20:34:10,602 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 20:34:10,602 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:34:10,602 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 20:34:10,602 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:10,603 INFO L87 Difference]: Start difference. First operand 1392 states and 4113 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:10,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:34:10,768 INFO L93 Difference]: Finished difference Result 1543 states and 4492 transitions. [2021-06-05 20:34:10,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 20:34:10,768 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:34:10,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:34:10,770 INFO L225 Difference]: With dead ends: 1543 [2021-06-05 20:34:10,770 INFO L226 Difference]: Without dead ends: 1460 [2021-06-05 20:34:10,770 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 57.0ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:10,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1460 states. [2021-06-05 20:34:10,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1460 to 1393. [2021-06-05 20:34:10,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1393 states, 1392 states have (on average 2.9561781609195403) internal successors, (4115), 1392 states have internal predecessors, (4115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:10,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1393 states to 1393 states and 4115 transitions. [2021-06-05 20:34:10,784 INFO L78 Accepts]: Start accepts. Automaton has 1393 states and 4115 transitions. Word has length 26 [2021-06-05 20:34:10,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:34:10,784 INFO L482 AbstractCegarLoop]: Abstraction has 1393 states and 4115 transitions. [2021-06-05 20:34:10,784 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:10,784 INFO L276 IsEmpty]: Start isEmpty. Operand 1393 states and 4115 transitions. [2021-06-05 20:34:10,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:34:10,785 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:34:10,785 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:34:10,785 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable127 [2021-06-05 20:34:10,785 INFO L430 AbstractCegarLoop]: === Iteration 129 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:34:10,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:34:10,785 INFO L82 PathProgramCache]: Analyzing trace with hash -1524908864, now seen corresponding path program 127 times [2021-06-05 20:34:10,786 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:34:10,786 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [247707136] [2021-06-05 20:34:10,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:34:10,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:34:10,844 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:34:10,844 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:34:10,844 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [247707136] [2021-06-05 20:34:10,844 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [247707136] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:34:10,844 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:34:10,844 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 20:34:10,844 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1029299250] [2021-06-05 20:34:10,844 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 20:34:10,844 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:34:10,845 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 20:34:10,845 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:10,845 INFO L87 Difference]: Start difference. First operand 1393 states and 4115 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:11,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:34:11,034 INFO L93 Difference]: Finished difference Result 1572 states and 4601 transitions. [2021-06-05 20:34:11,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 20:34:11,034 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:34:11,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:34:11,036 INFO L225 Difference]: With dead ends: 1572 [2021-06-05 20:34:11,036 INFO L226 Difference]: Without dead ends: 1475 [2021-06-05 20:34:11,036 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 50.3ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:11,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1475 states. [2021-06-05 20:34:11,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1475 to 1390. [2021-06-05 20:34:11,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1390 states, 1389 states have (on average 2.9546436285097193) internal successors, (4104), 1389 states have internal predecessors, (4104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:11,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1390 states to 1390 states and 4104 transitions. [2021-06-05 20:34:11,050 INFO L78 Accepts]: Start accepts. Automaton has 1390 states and 4104 transitions. Word has length 26 [2021-06-05 20:34:11,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:34:11,050 INFO L482 AbstractCegarLoop]: Abstraction has 1390 states and 4104 transitions. [2021-06-05 20:34:11,050 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:11,050 INFO L276 IsEmpty]: Start isEmpty. Operand 1390 states and 4104 transitions. [2021-06-05 20:34:11,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:34:11,056 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:34:11,056 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:34:11,056 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable128 [2021-06-05 20:34:11,057 INFO L430 AbstractCegarLoop]: === Iteration 130 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:34:11,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:34:11,057 INFO L82 PathProgramCache]: Analyzing trace with hash 2057990590, now seen corresponding path program 128 times [2021-06-05 20:34:11,057 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:34:11,057 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [21799835] [2021-06-05 20:34:11,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:34:11,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:34:11,116 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:34:11,116 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:34:11,116 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [21799835] [2021-06-05 20:34:11,117 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [21799835] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:34:11,117 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:34:11,117 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 20:34:11,117 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1922753092] [2021-06-05 20:34:11,117 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 20:34:11,117 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:34:11,117 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 20:34:11,117 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:11,117 INFO L87 Difference]: Start difference. First operand 1390 states and 4104 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:11,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:34:11,279 INFO L93 Difference]: Finished difference Result 1586 states and 4616 transitions. [2021-06-05 20:34:11,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 20:34:11,279 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:34:11,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:34:11,281 INFO L225 Difference]: With dead ends: 1586 [2021-06-05 20:34:11,281 INFO L226 Difference]: Without dead ends: 1498 [2021-06-05 20:34:11,281 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 49.0ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:11,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1498 states. [2021-06-05 20:34:11,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1498 to 1391. [2021-06-05 20:34:11,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1391 states, 1390 states have (on average 2.9532374100719423) internal successors, (4105), 1390 states have internal predecessors, (4105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:11,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1391 states to 1391 states and 4105 transitions. [2021-06-05 20:34:11,295 INFO L78 Accepts]: Start accepts. Automaton has 1391 states and 4105 transitions. Word has length 26 [2021-06-05 20:34:11,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:34:11,295 INFO L482 AbstractCegarLoop]: Abstraction has 1391 states and 4105 transitions. [2021-06-05 20:34:11,295 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:11,295 INFO L276 IsEmpty]: Start isEmpty. Operand 1391 states and 4105 transitions. [2021-06-05 20:34:11,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:34:11,296 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:34:11,296 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:34:11,297 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable129 [2021-06-05 20:34:11,297 INFO L430 AbstractCegarLoop]: === Iteration 131 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:34:11,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:34:11,297 INFO L82 PathProgramCache]: Analyzing trace with hash -1145603780, now seen corresponding path program 129 times [2021-06-05 20:34:11,297 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:34:11,297 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1563623315] [2021-06-05 20:34:11,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:34:11,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:34:11,360 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:34:11,360 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:34:11,360 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1563623315] [2021-06-05 20:34:11,360 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1563623315] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:34:11,360 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:34:11,360 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 20:34:11,360 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1463365069] [2021-06-05 20:34:11,360 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 20:34:11,360 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:34:11,361 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 20:34:11,361 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:11,361 INFO L87 Difference]: Start difference. First operand 1391 states and 4105 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:11,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:34:11,523 INFO L93 Difference]: Finished difference Result 1597 states and 4669 transitions. [2021-06-05 20:34:11,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 20:34:11,524 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:34:11,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:34:11,525 INFO L225 Difference]: With dead ends: 1597 [2021-06-05 20:34:11,525 INFO L226 Difference]: Without dead ends: 1518 [2021-06-05 20:34:11,525 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 49.5ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:11,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1518 states. [2021-06-05 20:34:11,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1518 to 1397. [2021-06-05 20:34:11,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1397 states, 1396 states have (on average 2.9548710601719197) internal successors, (4125), 1396 states have internal predecessors, (4125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:11,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1397 states to 1397 states and 4125 transitions. [2021-06-05 20:34:11,539 INFO L78 Accepts]: Start accepts. Automaton has 1397 states and 4125 transitions. Word has length 26 [2021-06-05 20:34:11,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:34:11,539 INFO L482 AbstractCegarLoop]: Abstraction has 1397 states and 4125 transitions. [2021-06-05 20:34:11,539 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:11,539 INFO L276 IsEmpty]: Start isEmpty. Operand 1397 states and 4125 transitions. [2021-06-05 20:34:11,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:34:11,540 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:34:11,540 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:34:11,541 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130 [2021-06-05 20:34:11,541 INFO L430 AbstractCegarLoop]: === Iteration 132 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:34:11,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:34:11,541 INFO L82 PathProgramCache]: Analyzing trace with hash -276159172, now seen corresponding path program 130 times [2021-06-05 20:34:11,541 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:34:11,541 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1680163335] [2021-06-05 20:34:11,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:34:11,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:34:11,599 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:34:11,599 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:34:11,599 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1680163335] [2021-06-05 20:34:11,599 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1680163335] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:34:11,599 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:34:11,600 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 20:34:11,600 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1820432094] [2021-06-05 20:34:11,600 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 20:34:11,600 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:34:11,600 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 20:34:11,600 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:11,600 INFO L87 Difference]: Start difference. First operand 1397 states and 4125 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:11,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:34:11,766 INFO L93 Difference]: Finished difference Result 1624 states and 4728 transitions. [2021-06-05 20:34:11,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 20:34:11,767 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:34:11,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:34:11,768 INFO L225 Difference]: With dead ends: 1624 [2021-06-05 20:34:11,768 INFO L226 Difference]: Without dead ends: 1520 [2021-06-05 20:34:11,768 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 48.7ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:11,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1520 states. [2021-06-05 20:34:11,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1520 to 1388. [2021-06-05 20:34:11,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1388 states, 1387 states have (on average 2.9495313626532083) internal successors, (4091), 1387 states have internal predecessors, (4091), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:11,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1388 states to 1388 states and 4091 transitions. [2021-06-05 20:34:11,782 INFO L78 Accepts]: Start accepts. Automaton has 1388 states and 4091 transitions. Word has length 26 [2021-06-05 20:34:11,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:34:11,782 INFO L482 AbstractCegarLoop]: Abstraction has 1388 states and 4091 transitions. [2021-06-05 20:34:11,782 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:11,782 INFO L276 IsEmpty]: Start isEmpty. Operand 1388 states and 4091 transitions. [2021-06-05 20:34:11,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:34:11,783 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:34:11,783 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:34:11,783 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131 [2021-06-05 20:34:11,783 INFO L430 AbstractCegarLoop]: === Iteration 133 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:34:11,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:34:11,784 INFO L82 PathProgramCache]: Analyzing trace with hash 1644524698, now seen corresponding path program 131 times [2021-06-05 20:34:11,784 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:34:11,784 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [611402369] [2021-06-05 20:34:11,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:34:11,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:34:11,842 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:34:11,842 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:34:11,842 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [611402369] [2021-06-05 20:34:11,842 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [611402369] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:34:11,842 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:34:11,842 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 20:34:11,842 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803930937] [2021-06-05 20:34:11,842 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 20:34:11,842 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:34:11,843 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 20:34:11,843 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:11,843 INFO L87 Difference]: Start difference. First operand 1388 states and 4091 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:12,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:34:12,002 INFO L93 Difference]: Finished difference Result 1580 states and 4623 transitions. [2021-06-05 20:34:12,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 20:34:12,002 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:34:12,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:34:12,003 INFO L225 Difference]: With dead ends: 1580 [2021-06-05 20:34:12,003 INFO L226 Difference]: Without dead ends: 1492 [2021-06-05 20:34:12,004 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 48.1ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:12,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1492 states. [2021-06-05 20:34:12,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1492 to 1389. [2021-06-05 20:34:12,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1389 states, 1388 states have (on average 2.951008645533141) internal successors, (4096), 1388 states have internal predecessors, (4096), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:12,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1389 states to 1389 states and 4096 transitions. [2021-06-05 20:34:12,017 INFO L78 Accepts]: Start accepts. Automaton has 1389 states and 4096 transitions. Word has length 26 [2021-06-05 20:34:12,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:34:12,017 INFO L482 AbstractCegarLoop]: Abstraction has 1389 states and 4096 transitions. [2021-06-05 20:34:12,017 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:12,018 INFO L276 IsEmpty]: Start isEmpty. Operand 1389 states and 4096 transitions. [2021-06-05 20:34:12,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:34:12,019 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:34:12,019 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:34:12,019 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable132 [2021-06-05 20:34:12,019 INFO L430 AbstractCegarLoop]: === Iteration 134 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:34:12,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:34:12,019 INFO L82 PathProgramCache]: Analyzing trace with hash -25644290, now seen corresponding path program 132 times [2021-06-05 20:34:12,019 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:34:12,019 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [921010180] [2021-06-05 20:34:12,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:34:12,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:34:12,077 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:34:12,077 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:34:12,077 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [921010180] [2021-06-05 20:34:12,077 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [921010180] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:34:12,077 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:34:12,077 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 20:34:12,077 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [744908784] [2021-06-05 20:34:12,077 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 20:34:12,077 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:34:12,078 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 20:34:12,078 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:12,078 INFO L87 Difference]: Start difference. First operand 1389 states and 4096 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:12,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:34:12,239 INFO L93 Difference]: Finished difference Result 1516 states and 4425 transitions. [2021-06-05 20:34:12,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 20:34:12,239 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:34:12,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:34:12,241 INFO L225 Difference]: With dead ends: 1516 [2021-06-05 20:34:12,241 INFO L226 Difference]: Without dead ends: 1437 [2021-06-05 20:34:12,241 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 49.1ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:12,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1437 states. [2021-06-05 20:34:12,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1437 to 1388. [2021-06-05 20:34:12,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1388 states, 1387 states have (on average 2.950252343186734) internal successors, (4092), 1387 states have internal predecessors, (4092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:12,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1388 states to 1388 states and 4092 transitions. [2021-06-05 20:34:12,255 INFO L78 Accepts]: Start accepts. Automaton has 1388 states and 4092 transitions. Word has length 26 [2021-06-05 20:34:12,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:34:12,255 INFO L482 AbstractCegarLoop]: Abstraction has 1388 states and 4092 transitions. [2021-06-05 20:34:12,255 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:12,255 INFO L276 IsEmpty]: Start isEmpty. Operand 1388 states and 4092 transitions. [2021-06-05 20:34:12,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:34:12,256 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:34:12,256 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:34:12,256 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable133 [2021-06-05 20:34:12,256 INFO L430 AbstractCegarLoop]: === Iteration 135 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:34:12,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:34:12,257 INFO L82 PathProgramCache]: Analyzing trace with hash -599041566, now seen corresponding path program 133 times [2021-06-05 20:34:12,257 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:34:12,257 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [632505665] [2021-06-05 20:34:12,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:34:12,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:34:12,313 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:34:12,313 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:34:12,313 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [632505665] [2021-06-05 20:34:12,313 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [632505665] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:34:12,313 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:34:12,313 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 20:34:12,314 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1500249088] [2021-06-05 20:34:12,314 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 20:34:12,314 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:34:12,314 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 20:34:12,314 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:12,314 INFO L87 Difference]: Start difference. First operand 1388 states and 4092 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:12,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:34:12,479 INFO L93 Difference]: Finished difference Result 1536 states and 4461 transitions. [2021-06-05 20:34:12,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 20:34:12,479 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:34:12,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:34:12,480 INFO L225 Difference]: With dead ends: 1536 [2021-06-05 20:34:12,480 INFO L226 Difference]: Without dead ends: 1453 [2021-06-05 20:34:12,481 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 48.0ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:12,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1453 states. [2021-06-05 20:34:12,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1453 to 1386. [2021-06-05 20:34:12,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1386 states, 1385 states have (on average 2.949458483754513) internal successors, (4085), 1385 states have internal predecessors, (4085), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:12,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1386 states to 1386 states and 4085 transitions. [2021-06-05 20:34:12,494 INFO L78 Accepts]: Start accepts. Automaton has 1386 states and 4085 transitions. Word has length 26 [2021-06-05 20:34:12,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:34:12,494 INFO L482 AbstractCegarLoop]: Abstraction has 1386 states and 4085 transitions. [2021-06-05 20:34:12,494 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:12,494 INFO L276 IsEmpty]: Start isEmpty. Operand 1386 states and 4085 transitions. [2021-06-05 20:34:12,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:34:12,496 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:34:12,496 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:34:12,496 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable134 [2021-06-05 20:34:12,496 INFO L430 AbstractCegarLoop]: === Iteration 136 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:34:12,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:34:12,496 INFO L82 PathProgramCache]: Analyzing trace with hash -1417788836, now seen corresponding path program 134 times [2021-06-05 20:34:12,496 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:34:12,496 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [333346072] [2021-06-05 20:34:12,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:34:12,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:34:12,552 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:34:12,552 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:34:12,552 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [333346072] [2021-06-05 20:34:12,552 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [333346072] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:34:12,552 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:34:12,553 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 20:34:12,553 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [906312602] [2021-06-05 20:34:12,553 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 20:34:12,553 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:34:12,553 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 20:34:12,553 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:12,553 INFO L87 Difference]: Start difference. First operand 1386 states and 4085 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:12,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:34:12,717 INFO L93 Difference]: Finished difference Result 1582 states and 4605 transitions. [2021-06-05 20:34:12,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 20:34:12,718 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:34:12,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:34:12,719 INFO L225 Difference]: With dead ends: 1582 [2021-06-05 20:34:12,719 INFO L226 Difference]: Without dead ends: 1497 [2021-06-05 20:34:12,719 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 48.6ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:12,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1497 states. [2021-06-05 20:34:12,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1497 to 1383. [2021-06-05 20:34:12,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1383 states, 1382 states have (on average 2.946454413892909) internal successors, (4072), 1382 states have internal predecessors, (4072), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:12,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1383 states to 1383 states and 4072 transitions. [2021-06-05 20:34:12,733 INFO L78 Accepts]: Start accepts. Automaton has 1383 states and 4072 transitions. Word has length 26 [2021-06-05 20:34:12,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:34:12,733 INFO L482 AbstractCegarLoop]: Abstraction has 1383 states and 4072 transitions. [2021-06-05 20:34:12,733 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:12,733 INFO L276 IsEmpty]: Start isEmpty. Operand 1383 states and 4072 transitions. [2021-06-05 20:34:12,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:34:12,734 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:34:12,734 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:34:12,734 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable135 [2021-06-05 20:34:12,734 INFO L430 AbstractCegarLoop]: === Iteration 137 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:34:12,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:34:12,735 INFO L82 PathProgramCache]: Analyzing trace with hash -1848108702, now seen corresponding path program 135 times [2021-06-05 20:34:12,735 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:34:12,735 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1430814365] [2021-06-05 20:34:12,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:34:12,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:34:12,793 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:34:12,793 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:34:12,793 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1430814365] [2021-06-05 20:34:12,793 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1430814365] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:34:12,793 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:34:12,793 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 20:34:12,793 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1954396913] [2021-06-05 20:34:12,793 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 20:34:12,794 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:34:12,794 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 20:34:12,794 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:12,794 INFO L87 Difference]: Start difference. First operand 1383 states and 4072 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:12,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:34:12,955 INFO L93 Difference]: Finished difference Result 1557 states and 4506 transitions. [2021-06-05 20:34:12,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 20:34:12,956 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:34:12,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:34:12,957 INFO L225 Difference]: With dead ends: 1557 [2021-06-05 20:34:12,957 INFO L226 Difference]: Without dead ends: 1464 [2021-06-05 20:34:12,957 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 49.5ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:12,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1464 states. [2021-06-05 20:34:12,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1464 to 1372. [2021-06-05 20:34:12,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1372 states, 1371 states have (on average 2.9540481400437635) internal successors, (4050), 1371 states have internal predecessors, (4050), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:12,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1372 states to 1372 states and 4050 transitions. [2021-06-05 20:34:12,971 INFO L78 Accepts]: Start accepts. Automaton has 1372 states and 4050 transitions. Word has length 26 [2021-06-05 20:34:12,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:34:12,971 INFO L482 AbstractCegarLoop]: Abstraction has 1372 states and 4050 transitions. [2021-06-05 20:34:12,971 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:12,971 INFO L276 IsEmpty]: Start isEmpty. Operand 1372 states and 4050 transitions. [2021-06-05 20:34:12,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:34:12,972 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:34:12,972 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:34:12,972 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable136 [2021-06-05 20:34:12,973 INFO L430 AbstractCegarLoop]: === Iteration 138 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:34:12,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:34:12,973 INFO L82 PathProgramCache]: Analyzing trace with hash -782554082, now seen corresponding path program 136 times [2021-06-05 20:34:12,973 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:34:12,973 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [233303995] [2021-06-05 20:34:12,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:34:12,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:34:13,011 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:34:13,011 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:34:13,011 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [233303995] [2021-06-05 20:34:13,011 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [233303995] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:34:13,011 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:34:13,012 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-05 20:34:13,012 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [628771] [2021-06-05 20:34:13,012 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:34:13,012 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:34:13,012 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:34:13,012 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:34:13,012 INFO L87 Difference]: Start difference. First operand 1372 states and 4050 transitions. Second operand has 8 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 7 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:13,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:34:13,110 INFO L93 Difference]: Finished difference Result 1654 states and 4846 transitions. [2021-06-05 20:34:13,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:34:13,110 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 7 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:34:13,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:34:13,112 INFO L225 Difference]: With dead ends: 1654 [2021-06-05 20:34:13,112 INFO L226 Difference]: Without dead ends: 1575 [2021-06-05 20:34:13,112 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 31.2ms TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:34:13,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1575 states. [2021-06-05 20:34:13,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1575 to 1438. [2021-06-05 20:34:13,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1438 states, 1437 states have (on average 2.955462769659012) internal successors, (4247), 1437 states have internal predecessors, (4247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:13,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1438 states to 1438 states and 4247 transitions. [2021-06-05 20:34:13,126 INFO L78 Accepts]: Start accepts. Automaton has 1438 states and 4247 transitions. Word has length 26 [2021-06-05 20:34:13,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:34:13,126 INFO L482 AbstractCegarLoop]: Abstraction has 1438 states and 4247 transitions. [2021-06-05 20:34:13,126 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 7 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:13,127 INFO L276 IsEmpty]: Start isEmpty. Operand 1438 states and 4247 transitions. [2021-06-05 20:34:13,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:34:13,128 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:34:13,128 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:34:13,128 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable137 [2021-06-05 20:34:13,128 INFO L430 AbstractCegarLoop]: === Iteration 139 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:34:13,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:34:13,128 INFO L82 PathProgramCache]: Analyzing trace with hash 440133670, now seen corresponding path program 137 times [2021-06-05 20:34:13,128 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:34:13,128 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2051081363] [2021-06-05 20:34:13,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:34:13,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:34:13,175 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:34:13,175 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:34:13,175 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2051081363] [2021-06-05 20:34:13,175 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2051081363] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:34:13,175 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:34:13,176 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:34:13,176 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [12482728] [2021-06-05 20:34:13,176 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-05 20:34:13,176 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:34:13,176 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-05 20:34:13,176 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:34:13,176 INFO L87 Difference]: Start difference. First operand 1438 states and 4247 transitions. Second operand has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:13,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:34:13,307 INFO L93 Difference]: Finished difference Result 1749 states and 5118 transitions. [2021-06-05 20:34:13,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-05 20:34:13,307 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:34:13,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:34:13,309 INFO L225 Difference]: With dead ends: 1749 [2021-06-05 20:34:13,309 INFO L226 Difference]: Without dead ends: 1598 [2021-06-05 20:34:13,309 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 39.5ms TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:34:13,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1598 states. [2021-06-05 20:34:13,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1598 to 1426. [2021-06-05 20:34:13,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1426 states, 1425 states have (on average 2.953684210526316) internal successors, (4209), 1425 states have internal predecessors, (4209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:13,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1426 states to 1426 states and 4209 transitions. [2021-06-05 20:34:13,323 INFO L78 Accepts]: Start accepts. Automaton has 1426 states and 4209 transitions. Word has length 26 [2021-06-05 20:34:13,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:34:13,323 INFO L482 AbstractCegarLoop]: Abstraction has 1426 states and 4209 transitions. [2021-06-05 20:34:13,324 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:13,324 INFO L276 IsEmpty]: Start isEmpty. Operand 1426 states and 4209 transitions. [2021-06-05 20:34:13,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:34:13,325 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:34:13,325 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:34:13,325 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable138 [2021-06-05 20:34:13,325 INFO L430 AbstractCegarLoop]: === Iteration 140 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:34:13,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:34:13,325 INFO L82 PathProgramCache]: Analyzing trace with hash 1794672444, now seen corresponding path program 138 times [2021-06-05 20:34:13,325 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:34:13,325 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [922800904] [2021-06-05 20:34:13,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:34:13,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:34:13,370 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:34:13,370 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:34:13,370 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [922800904] [2021-06-05 20:34:13,370 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [922800904] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:34:13,370 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:34:13,370 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:34:13,370 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1140165364] [2021-06-05 20:34:13,370 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-05 20:34:13,370 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:34:13,371 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-05 20:34:13,371 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:34:13,371 INFO L87 Difference]: Start difference. First operand 1426 states and 4209 transitions. Second operand has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:13,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:34:13,496 INFO L93 Difference]: Finished difference Result 1711 states and 4999 transitions. [2021-06-05 20:34:13,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-05 20:34:13,496 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:34:13,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:34:13,499 INFO L225 Difference]: With dead ends: 1711 [2021-06-05 20:34:13,499 INFO L226 Difference]: Without dead ends: 1632 [2021-06-05 20:34:13,499 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 37.1ms TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:34:13,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1632 states. [2021-06-05 20:34:13,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1632 to 1428. [2021-06-05 20:34:13,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1428 states, 1427 states have (on average 2.9530483531885072) internal successors, (4214), 1427 states have internal predecessors, (4214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:13,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1428 states to 1428 states and 4214 transitions. [2021-06-05 20:34:13,513 INFO L78 Accepts]: Start accepts. Automaton has 1428 states and 4214 transitions. Word has length 26 [2021-06-05 20:34:13,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:34:13,513 INFO L482 AbstractCegarLoop]: Abstraction has 1428 states and 4214 transitions. [2021-06-05 20:34:13,513 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:13,514 INFO L276 IsEmpty]: Start isEmpty. Operand 1428 states and 4214 transitions. [2021-06-05 20:34:13,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:34:13,515 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:34:13,515 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:34:13,515 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable139 [2021-06-05 20:34:13,515 INFO L430 AbstractCegarLoop]: === Iteration 141 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:34:13,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:34:13,515 INFO L82 PathProgramCache]: Analyzing trace with hash -1277607100, now seen corresponding path program 139 times [2021-06-05 20:34:13,515 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:34:13,515 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [122121261] [2021-06-05 20:34:13,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:34:13,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:34:13,574 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:34:13,574 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:34:13,574 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [122121261] [2021-06-05 20:34:13,574 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [122121261] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:34:13,574 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:34:13,574 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:34:13,574 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1932269266] [2021-06-05 20:34:13,574 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-05 20:34:13,574 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:34:13,574 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-05 20:34:13,575 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:34:13,575 INFO L87 Difference]: Start difference. First operand 1428 states and 4214 transitions. Second operand has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:13,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:34:13,710 INFO L93 Difference]: Finished difference Result 1743 states and 5115 transitions. [2021-06-05 20:34:13,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-05 20:34:13,710 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:34:13,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:34:13,712 INFO L225 Difference]: With dead ends: 1743 [2021-06-05 20:34:13,712 INFO L226 Difference]: Without dead ends: 1660 [2021-06-05 20:34:13,712 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 51.4ms TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:34:13,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1660 states. [2021-06-05 20:34:13,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1660 to 1428. [2021-06-05 20:34:13,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1428 states, 1427 states have (on average 2.9516468114926417) internal successors, (4212), 1427 states have internal predecessors, (4212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:13,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1428 states to 1428 states and 4212 transitions. [2021-06-05 20:34:13,727 INFO L78 Accepts]: Start accepts. Automaton has 1428 states and 4212 transitions. Word has length 26 [2021-06-05 20:34:13,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:34:13,727 INFO L482 AbstractCegarLoop]: Abstraction has 1428 states and 4212 transitions. [2021-06-05 20:34:13,727 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:13,727 INFO L276 IsEmpty]: Start isEmpty. Operand 1428 states and 4212 transitions. [2021-06-05 20:34:13,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:34:13,728 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:34:13,728 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:34:13,728 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable140 [2021-06-05 20:34:13,728 INFO L430 AbstractCegarLoop]: === Iteration 142 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:34:13,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:34:13,729 INFO L82 PathProgramCache]: Analyzing trace with hash 1532456486, now seen corresponding path program 140 times [2021-06-05 20:34:13,729 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:34:13,729 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [246017861] [2021-06-05 20:34:13,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:34:13,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:34:13,776 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:34:13,776 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:34:13,776 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [246017861] [2021-06-05 20:34:13,776 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [246017861] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:34:13,776 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:34:13,776 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:34:13,776 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [696235607] [2021-06-05 20:34:13,776 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-05 20:34:13,777 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:34:13,777 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-05 20:34:13,777 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:34:13,777 INFO L87 Difference]: Start difference. First operand 1428 states and 4212 transitions. Second operand has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:13,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:34:13,906 INFO L93 Difference]: Finished difference Result 1741 states and 5077 transitions. [2021-06-05 20:34:13,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-05 20:34:13,906 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:34:13,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:34:13,908 INFO L225 Difference]: With dead ends: 1741 [2021-06-05 20:34:13,908 INFO L226 Difference]: Without dead ends: 1630 [2021-06-05 20:34:13,908 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 39.0ms TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:34:13,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1630 states. [2021-06-05 20:34:13,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1630 to 1396. [2021-06-05 20:34:13,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1396 states, 1395 states have (on average 2.9505376344086023) internal successors, (4116), 1395 states have internal predecessors, (4116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:13,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1396 states to 1396 states and 4116 transitions. [2021-06-05 20:34:13,922 INFO L78 Accepts]: Start accepts. Automaton has 1396 states and 4116 transitions. Word has length 26 [2021-06-05 20:34:13,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:34:13,922 INFO L482 AbstractCegarLoop]: Abstraction has 1396 states and 4116 transitions. [2021-06-05 20:34:13,922 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:13,922 INFO L276 IsEmpty]: Start isEmpty. Operand 1396 states and 4116 transitions. [2021-06-05 20:34:13,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:34:13,923 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:34:13,924 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:34:13,924 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable141 [2021-06-05 20:34:13,924 INFO L430 AbstractCegarLoop]: === Iteration 143 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:34:13,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:34:13,924 INFO L82 PathProgramCache]: Analyzing trace with hash -1774043234, now seen corresponding path program 141 times [2021-06-05 20:34:13,924 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:34:13,924 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1398626901] [2021-06-05 20:34:13,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:34:13,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:34:13,972 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:34:13,972 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:34:13,972 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1398626901] [2021-06-05 20:34:13,972 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1398626901] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:34:13,972 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:34:13,972 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:34:13,972 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [735491883] [2021-06-05 20:34:13,973 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-05 20:34:13,973 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:34:13,973 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-05 20:34:13,973 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:34:13,973 INFO L87 Difference]: Start difference. First operand 1396 states and 4116 transitions. Second operand has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:14,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:34:14,103 INFO L93 Difference]: Finished difference Result 1586 states and 4638 transitions. [2021-06-05 20:34:14,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-05 20:34:14,104 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:34:14,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:34:14,105 INFO L225 Difference]: With dead ends: 1586 [2021-06-05 20:34:14,105 INFO L226 Difference]: Without dead ends: 1507 [2021-06-05 20:34:14,105 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 39.3ms TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:34:14,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1507 states. [2021-06-05 20:34:14,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1507 to 1406. [2021-06-05 20:34:14,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1406 states, 1405 states have (on average 2.9508896797153024) internal successors, (4146), 1405 states have internal predecessors, (4146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:14,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1406 states to 1406 states and 4146 transitions. [2021-06-05 20:34:14,119 INFO L78 Accepts]: Start accepts. Automaton has 1406 states and 4146 transitions. Word has length 26 [2021-06-05 20:34:14,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:34:14,120 INFO L482 AbstractCegarLoop]: Abstraction has 1406 states and 4146 transitions. [2021-06-05 20:34:14,120 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:14,120 INFO L276 IsEmpty]: Start isEmpty. Operand 1406 states and 4146 transitions. [2021-06-05 20:34:14,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:34:14,121 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:34:14,121 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:34:14,121 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable142 [2021-06-05 20:34:14,121 INFO L430 AbstractCegarLoop]: === Iteration 144 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:34:14,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:34:14,121 INFO L82 PathProgramCache]: Analyzing trace with hash -904598626, now seen corresponding path program 142 times [2021-06-05 20:34:14,121 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:34:14,121 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [9978892] [2021-06-05 20:34:14,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:34:14,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:34:14,169 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:34:14,169 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:34:14,169 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [9978892] [2021-06-05 20:34:14,169 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [9978892] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:34:14,169 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:34:14,169 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:34:14,169 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1338462600] [2021-06-05 20:34:14,169 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-05 20:34:14,169 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:34:14,169 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-05 20:34:14,169 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:34:14,170 INFO L87 Difference]: Start difference. First operand 1406 states and 4146 transitions. Second operand has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:14,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:34:14,296 INFO L93 Difference]: Finished difference Result 1622 states and 4736 transitions. [2021-06-05 20:34:14,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-05 20:34:14,297 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:34:14,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:34:14,298 INFO L225 Difference]: With dead ends: 1622 [2021-06-05 20:34:14,298 INFO L226 Difference]: Without dead ends: 1518 [2021-06-05 20:34:14,298 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 39.9ms TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:34:14,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1518 states. [2021-06-05 20:34:14,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1518 to 1422. [2021-06-05 20:34:14,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1422 states, 1421 states have (on average 2.952146375791696) internal successors, (4195), 1421 states have internal predecessors, (4195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:14,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1422 states to 1422 states and 4195 transitions. [2021-06-05 20:34:14,312 INFO L78 Accepts]: Start accepts. Automaton has 1422 states and 4195 transitions. Word has length 26 [2021-06-05 20:34:14,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:34:14,312 INFO L482 AbstractCegarLoop]: Abstraction has 1422 states and 4195 transitions. [2021-06-05 20:34:14,313 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:14,313 INFO L276 IsEmpty]: Start isEmpty. Operand 1422 states and 4195 transitions. [2021-06-05 20:34:14,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:34:14,314 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:34:14,314 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:34:14,314 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable143 [2021-06-05 20:34:14,314 INFO L430 AbstractCegarLoop]: === Iteration 145 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:34:14,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:34:14,314 INFO L82 PathProgramCache]: Analyzing trace with hash 1921657440, now seen corresponding path program 143 times [2021-06-05 20:34:14,314 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:34:14,314 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1241210178] [2021-06-05 20:34:14,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:34:14,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:34:14,372 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:34:14,372 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:34:14,372 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1241210178] [2021-06-05 20:34:14,372 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1241210178] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:34:14,373 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:34:14,373 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 20:34:14,373 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1761166749] [2021-06-05 20:34:14,373 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 20:34:14,373 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:34:14,373 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 20:34:14,373 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:14,373 INFO L87 Difference]: Start difference. First operand 1422 states and 4195 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:14,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:34:14,541 INFO L93 Difference]: Finished difference Result 1651 states and 4814 transitions. [2021-06-05 20:34:14,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 20:34:14,541 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:34:14,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:34:14,543 INFO L225 Difference]: With dead ends: 1651 [2021-06-05 20:34:14,543 INFO L226 Difference]: Without dead ends: 1572 [2021-06-05 20:34:14,543 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 48.6ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:14,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1572 states. [2021-06-05 20:34:14,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1572 to 1446. [2021-06-05 20:34:14,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1446 states, 1445 states have (on average 2.9487889273356402) internal successors, (4261), 1445 states have internal predecessors, (4261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:14,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1446 states to 1446 states and 4261 transitions. [2021-06-05 20:34:14,558 INFO L78 Accepts]: Start accepts. Automaton has 1446 states and 4261 transitions. Word has length 26 [2021-06-05 20:34:14,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:34:14,558 INFO L482 AbstractCegarLoop]: Abstraction has 1446 states and 4261 transitions. [2021-06-05 20:34:14,558 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:14,558 INFO L276 IsEmpty]: Start isEmpty. Operand 1446 states and 4261 transitions. [2021-06-05 20:34:14,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:34:14,559 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:34:14,559 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:34:14,559 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable144 [2021-06-05 20:34:14,560 INFO L430 AbstractCegarLoop]: === Iteration 146 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:34:14,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:34:14,560 INFO L82 PathProgramCache]: Analyzing trace with hash 1348260164, now seen corresponding path program 144 times [2021-06-05 20:34:14,560 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:34:14,560 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [22611770] [2021-06-05 20:34:14,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:34:14,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:34:14,616 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:34:14,616 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:34:14,616 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [22611770] [2021-06-05 20:34:14,617 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [22611770] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:34:14,617 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:34:14,617 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 20:34:14,617 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1987421611] [2021-06-05 20:34:14,617 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 20:34:14,617 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:34:14,617 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 20:34:14,617 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:14,617 INFO L87 Difference]: Start difference. First operand 1446 states and 4261 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:14,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:34:14,789 INFO L93 Difference]: Finished difference Result 1620 states and 4730 transitions. [2021-06-05 20:34:14,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 20:34:14,789 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:34:14,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:34:14,791 INFO L225 Difference]: With dead ends: 1620 [2021-06-05 20:34:14,791 INFO L226 Difference]: Without dead ends: 1509 [2021-06-05 20:34:14,791 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 48.4ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:14,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1509 states. [2021-06-05 20:34:14,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1509 to 1461. [2021-06-05 20:34:14,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1461 states, 1460 states have (on average 2.9506849315068493) internal successors, (4308), 1460 states have internal predecessors, (4308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:14,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1461 states to 1461 states and 4308 transitions. [2021-06-05 20:34:14,805 INFO L78 Accepts]: Start accepts. Automaton has 1461 states and 4308 transitions. Word has length 26 [2021-06-05 20:34:14,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:34:14,805 INFO L482 AbstractCegarLoop]: Abstraction has 1461 states and 4308 transitions. [2021-06-05 20:34:14,805 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:14,805 INFO L276 IsEmpty]: Start isEmpty. Operand 1461 states and 4308 transitions. [2021-06-05 20:34:14,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:34:14,806 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:34:14,806 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:34:14,806 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable145 [2021-06-05 20:34:14,806 INFO L430 AbstractCegarLoop]: === Iteration 147 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:34:14,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:34:14,807 INFO L82 PathProgramCache]: Analyzing trace with hash 1934811012, now seen corresponding path program 145 times [2021-06-05 20:34:14,807 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:34:14,807 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [861670343] [2021-06-05 20:34:14,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:34:14,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:34:14,866 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:34:14,867 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:34:14,867 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [861670343] [2021-06-05 20:34:14,867 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [861670343] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:34:14,867 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:34:14,867 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 20:34:14,867 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [535025481] [2021-06-05 20:34:14,867 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 20:34:14,867 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:34:14,867 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 20:34:14,867 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:14,867 INFO L87 Difference]: Start difference. First operand 1461 states and 4308 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:15,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:34:15,025 INFO L93 Difference]: Finished difference Result 1737 states and 5065 transitions. [2021-06-05 20:34:15,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 20:34:15,025 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:34:15,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:34:15,027 INFO L225 Difference]: With dead ends: 1737 [2021-06-05 20:34:15,027 INFO L226 Difference]: Without dead ends: 1640 [2021-06-05 20:34:15,027 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 47.7ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:15,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1640 states. [2021-06-05 20:34:15,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1640 to 1487. [2021-06-05 20:34:15,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1487 states, 1486 states have (on average 2.958277254374159) internal successors, (4396), 1486 states have internal predecessors, (4396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:15,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1487 states to 1487 states and 4396 transitions. [2021-06-05 20:34:15,042 INFO L78 Accepts]: Start accepts. Automaton has 1487 states and 4396 transitions. Word has length 26 [2021-06-05 20:34:15,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:34:15,042 INFO L482 AbstractCegarLoop]: Abstraction has 1487 states and 4396 transitions. [2021-06-05 20:34:15,043 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:15,043 INFO L276 IsEmpty]: Start isEmpty. Operand 1487 states and 4396 transitions. [2021-06-05 20:34:15,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:34:15,044 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:34:15,044 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:34:15,044 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable146 [2021-06-05 20:34:15,044 INFO L430 AbstractCegarLoop]: === Iteration 148 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:34:15,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:34:15,044 INFO L82 PathProgramCache]: Analyzing trace with hash 1222743170, now seen corresponding path program 146 times [2021-06-05 20:34:15,044 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:34:15,044 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1684904605] [2021-06-05 20:34:15,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:34:15,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:34:15,100 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:34:15,100 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:34:15,100 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1684904605] [2021-06-05 20:34:15,100 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1684904605] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:34:15,100 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:34:15,100 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 20:34:15,100 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1762835053] [2021-06-05 20:34:15,100 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 20:34:15,100 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:34:15,101 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 20:34:15,101 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:15,101 INFO L87 Difference]: Start difference. First operand 1487 states and 4396 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:15,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:34:15,265 INFO L93 Difference]: Finished difference Result 1672 states and 4884 transitions. [2021-06-05 20:34:15,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 20:34:15,265 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:34:15,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:34:15,267 INFO L225 Difference]: With dead ends: 1672 [2021-06-05 20:34:15,267 INFO L226 Difference]: Without dead ends: 1584 [2021-06-05 20:34:15,267 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 48.2ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:15,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1584 states. [2021-06-05 20:34:15,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1584 to 1485. [2021-06-05 20:34:15,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1485 states, 1484 states have (on average 2.9588948787061993) internal successors, (4391), 1484 states have internal predecessors, (4391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:15,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1485 states to 1485 states and 4391 transitions. [2021-06-05 20:34:15,281 INFO L78 Accepts]: Start accepts. Automaton has 1485 states and 4391 transitions. Word has length 26 [2021-06-05 20:34:15,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:34:15,281 INFO L482 AbstractCegarLoop]: Abstraction has 1485 states and 4391 transitions. [2021-06-05 20:34:15,282 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:15,282 INFO L276 IsEmpty]: Start isEmpty. Operand 1485 states and 4391 transitions. [2021-06-05 20:34:15,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:34:15,283 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:34:15,283 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:34:15,283 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable147 [2021-06-05 20:34:15,283 INFO L430 AbstractCegarLoop]: === Iteration 149 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:34:15,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:34:15,283 INFO L82 PathProgramCache]: Analyzing trace with hash -1906471334, now seen corresponding path program 147 times [2021-06-05 20:34:15,283 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:34:15,283 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1833865265] [2021-06-05 20:34:15,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:34:15,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:34:15,340 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:34:15,341 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:34:15,341 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1833865265] [2021-06-05 20:34:15,341 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1833865265] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:34:15,341 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:34:15,341 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 20:34:15,341 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [694252113] [2021-06-05 20:34:15,341 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 20:34:15,341 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:34:15,341 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 20:34:15,341 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:15,341 INFO L87 Difference]: Start difference. First operand 1485 states and 4391 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:15,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:34:15,503 INFO L93 Difference]: Finished difference Result 1717 states and 5001 transitions. [2021-06-05 20:34:15,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 20:34:15,504 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:34:15,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:34:15,505 INFO L225 Difference]: With dead ends: 1717 [2021-06-05 20:34:15,505 INFO L226 Difference]: Without dead ends: 1584 [2021-06-05 20:34:15,506 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 48.8ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:15,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1584 states. [2021-06-05 20:34:15,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1584 to 1461. [2021-06-05 20:34:15,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1461 states, 1460 states have (on average 2.956849315068493) internal successors, (4317), 1460 states have internal predecessors, (4317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:15,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1461 states to 1461 states and 4317 transitions. [2021-06-05 20:34:15,520 INFO L78 Accepts]: Start accepts. Automaton has 1461 states and 4317 transitions. Word has length 26 [2021-06-05 20:34:15,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:34:15,520 INFO L482 AbstractCegarLoop]: Abstraction has 1461 states and 4317 transitions. [2021-06-05 20:34:15,520 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:15,520 INFO L276 IsEmpty]: Start isEmpty. Operand 1461 states and 4317 transitions. [2021-06-05 20:34:15,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:34:15,522 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:34:15,522 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:34:15,522 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable148 [2021-06-05 20:34:15,522 INFO L430 AbstractCegarLoop]: === Iteration 150 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:34:15,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:34:15,522 INFO L82 PathProgramCache]: Analyzing trace with hash 1377180688, now seen corresponding path program 148 times [2021-06-05 20:34:15,522 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:34:15,522 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1719492291] [2021-06-05 20:34:15,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:34:15,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:34:15,580 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:34:15,580 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:34:15,580 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1719492291] [2021-06-05 20:34:15,580 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1719492291] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:34:15,580 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:34:15,580 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 20:34:15,580 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1784610436] [2021-06-05 20:34:15,580 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 20:34:15,580 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:34:15,580 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 20:34:15,580 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:15,580 INFO L87 Difference]: Start difference. First operand 1461 states and 4317 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:15,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:34:15,748 INFO L93 Difference]: Finished difference Result 1724 states and 4996 transitions. [2021-06-05 20:34:15,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 20:34:15,748 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:34:15,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:34:15,750 INFO L225 Difference]: With dead ends: 1724 [2021-06-05 20:34:15,750 INFO L226 Difference]: Without dead ends: 1544 [2021-06-05 20:34:15,750 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 47.9ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:15,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1544 states. [2021-06-05 20:34:15,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1544 to 1422. [2021-06-05 20:34:15,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1422 states, 1421 states have (on average 2.938775510204082) internal successors, (4176), 1421 states have internal predecessors, (4176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:15,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1422 states to 1422 states and 4176 transitions. [2021-06-05 20:34:15,764 INFO L78 Accepts]: Start accepts. Automaton has 1422 states and 4176 transitions. Word has length 26 [2021-06-05 20:34:15,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:34:15,764 INFO L482 AbstractCegarLoop]: Abstraction has 1422 states and 4176 transitions. [2021-06-05 20:34:15,764 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:15,764 INFO L276 IsEmpty]: Start isEmpty. Operand 1422 states and 4176 transitions. [2021-06-05 20:34:15,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:34:15,765 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:34:15,765 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:34:15,765 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable149 [2021-06-05 20:34:15,765 INFO L430 AbstractCegarLoop]: === Iteration 151 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:34:15,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:34:15,766 INFO L82 PathProgramCache]: Analyzing trace with hash 1039485756, now seen corresponding path program 149 times [2021-06-05 20:34:15,766 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:34:15,766 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1161212852] [2021-06-05 20:34:15,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:34:15,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:34:15,825 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:34:15,825 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:34:15,825 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1161212852] [2021-06-05 20:34:15,826 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1161212852] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:34:15,826 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:34:15,826 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 20:34:15,826 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [219836441] [2021-06-05 20:34:15,826 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 20:34:15,826 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:34:15,826 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 20:34:15,826 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:15,826 INFO L87 Difference]: Start difference. First operand 1422 states and 4176 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:15,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:34:15,987 INFO L93 Difference]: Finished difference Result 1593 states and 4622 transitions. [2021-06-05 20:34:15,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 20:34:15,987 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:34:15,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:34:15,989 INFO L225 Difference]: With dead ends: 1593 [2021-06-05 20:34:15,989 INFO L226 Difference]: Without dead ends: 1514 [2021-06-05 20:34:15,989 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 48.4ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:15,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1514 states. [2021-06-05 20:34:16,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1514 to 1421. [2021-06-05 20:34:16,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1421 states, 1420 states have (on average 2.9380281690140846) internal successors, (4172), 1420 states have internal predecessors, (4172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:16,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1421 states to 1421 states and 4172 transitions. [2021-06-05 20:34:16,003 INFO L78 Accepts]: Start accepts. Automaton has 1421 states and 4172 transitions. Word has length 26 [2021-06-05 20:34:16,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:34:16,003 INFO L482 AbstractCegarLoop]: Abstraction has 1421 states and 4172 transitions. [2021-06-05 20:34:16,003 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:16,003 INFO L276 IsEmpty]: Start isEmpty. Operand 1421 states and 4172 transitions. [2021-06-05 20:34:16,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:34:16,004 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:34:16,004 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:34:16,004 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable150 [2021-06-05 20:34:16,005 INFO L430 AbstractCegarLoop]: === Iteration 152 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:34:16,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:34:16,005 INFO L82 PathProgramCache]: Analyzing trace with hash 1908930364, now seen corresponding path program 150 times [2021-06-05 20:34:16,005 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:34:16,005 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [526328285] [2021-06-05 20:34:16,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:34:16,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:34:16,063 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:34:16,064 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:34:16,064 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [526328285] [2021-06-05 20:34:16,064 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [526328285] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:34:16,064 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:34:16,064 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 20:34:16,064 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [159321217] [2021-06-05 20:34:16,064 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 20:34:16,064 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:34:16,064 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 20:34:16,064 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:16,064 INFO L87 Difference]: Start difference. First operand 1421 states and 4172 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:16,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:34:16,224 INFO L93 Difference]: Finished difference Result 1587 states and 4608 transitions. [2021-06-05 20:34:16,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 20:34:16,224 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:34:16,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:34:16,226 INFO L225 Difference]: With dead ends: 1587 [2021-06-05 20:34:16,226 INFO L226 Difference]: Without dead ends: 1483 [2021-06-05 20:34:16,226 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 48.0ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:16,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1483 states. [2021-06-05 20:34:16,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1483 to 1422. [2021-06-05 20:34:16,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1422 states, 1421 states have (on average 2.936664320900774) internal successors, (4173), 1421 states have internal predecessors, (4173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:16,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1422 states to 1422 states and 4173 transitions. [2021-06-05 20:34:16,240 INFO L78 Accepts]: Start accepts. Automaton has 1422 states and 4173 transitions. Word has length 26 [2021-06-05 20:34:16,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:34:16,240 INFO L482 AbstractCegarLoop]: Abstraction has 1422 states and 4173 transitions. [2021-06-05 20:34:16,240 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:16,240 INFO L276 IsEmpty]: Start isEmpty. Operand 1422 states and 4173 transitions. [2021-06-05 20:34:16,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:34:16,241 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:34:16,242 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:34:16,242 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable151 [2021-06-05 20:34:16,242 INFO L430 AbstractCegarLoop]: === Iteration 153 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:34:16,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:34:16,242 INFO L82 PathProgramCache]: Analyzing trace with hash 440219134, now seen corresponding path program 151 times [2021-06-05 20:34:16,242 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:34:16,242 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [728382645] [2021-06-05 20:34:16,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:34:16,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:34:16,301 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:34:16,301 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:34:16,301 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [728382645] [2021-06-05 20:34:16,301 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [728382645] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:34:16,301 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:34:16,301 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 20:34:16,301 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1644679057] [2021-06-05 20:34:16,302 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 20:34:16,302 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:34:16,302 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 20:34:16,302 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:16,302 INFO L87 Difference]: Start difference. First operand 1422 states and 4173 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:16,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:34:16,466 INFO L93 Difference]: Finished difference Result 1574 states and 4561 transitions. [2021-06-05 20:34:16,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 20:34:16,467 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:34:16,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:34:16,468 INFO L225 Difference]: With dead ends: 1574 [2021-06-05 20:34:16,469 INFO L226 Difference]: Without dead ends: 1495 [2021-06-05 20:34:16,469 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 48.6ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:16,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1495 states. [2021-06-05 20:34:16,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1495 to 1423. [2021-06-05 20:34:16,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1423 states, 1422 states have (on average 2.9374120956399437) internal successors, (4177), 1422 states have internal predecessors, (4177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:16,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1423 states to 1423 states and 4177 transitions. [2021-06-05 20:34:16,483 INFO L78 Accepts]: Start accepts. Automaton has 1423 states and 4177 transitions. Word has length 26 [2021-06-05 20:34:16,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:34:16,483 INFO L482 AbstractCegarLoop]: Abstraction has 1423 states and 4177 transitions. [2021-06-05 20:34:16,483 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:16,483 INFO L276 IsEmpty]: Start isEmpty. Operand 1423 states and 4177 transitions. [2021-06-05 20:34:16,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:34:16,485 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:34:16,485 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:34:16,485 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable152 [2021-06-05 20:34:16,485 INFO L430 AbstractCegarLoop]: === Iteration 154 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:34:16,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:34:16,485 INFO L82 PathProgramCache]: Analyzing trace with hash -133178142, now seen corresponding path program 152 times [2021-06-05 20:34:16,485 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:34:16,485 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1605008396] [2021-06-05 20:34:16,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:34:16,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:34:16,541 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:34:16,541 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:34:16,541 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1605008396] [2021-06-05 20:34:16,541 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1605008396] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:34:16,541 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:34:16,541 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 20:34:16,541 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1208726278] [2021-06-05 20:34:16,541 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 20:34:16,542 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:34:16,542 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 20:34:16,542 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:16,542 INFO L87 Difference]: Start difference. First operand 1423 states and 4177 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:16,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:34:16,710 INFO L93 Difference]: Finished difference Result 1563 states and 4535 transitions. [2021-06-05 20:34:16,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 20:34:16,710 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:34:16,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:34:16,711 INFO L225 Difference]: With dead ends: 1563 [2021-06-05 20:34:16,712 INFO L226 Difference]: Without dead ends: 1480 [2021-06-05 20:34:16,712 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 48.5ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:16,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1480 states. [2021-06-05 20:34:16,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1480 to 1424. [2021-06-05 20:34:16,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1424 states, 1423 states have (on average 2.936753338018271) internal successors, (4179), 1423 states have internal predecessors, (4179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:16,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1424 states to 1424 states and 4179 transitions. [2021-06-05 20:34:16,739 INFO L78 Accepts]: Start accepts. Automaton has 1424 states and 4179 transitions. Word has length 26 [2021-06-05 20:34:16,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:34:16,739 INFO L482 AbstractCegarLoop]: Abstraction has 1424 states and 4179 transitions. [2021-06-05 20:34:16,739 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:16,740 INFO L276 IsEmpty]: Start isEmpty. Operand 1424 states and 4179 transitions. [2021-06-05 20:34:16,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:34:16,741 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:34:16,741 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:34:16,741 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable153 [2021-06-05 20:34:16,741 INFO L430 AbstractCegarLoop]: === Iteration 155 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:34:16,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:34:16,741 INFO L82 PathProgramCache]: Analyzing trace with hash 453372706, now seen corresponding path program 153 times [2021-06-05 20:34:16,741 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:34:16,741 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1535279181] [2021-06-05 20:34:16,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:34:16,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:34:16,797 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:34:16,797 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:34:16,797 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1535279181] [2021-06-05 20:34:16,797 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1535279181] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:34:16,797 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:34:16,797 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 20:34:16,797 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [781253299] [2021-06-05 20:34:16,798 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 20:34:16,798 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:34:16,798 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 20:34:16,798 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:16,798 INFO L87 Difference]: Start difference. First operand 1424 states and 4179 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:16,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:34:16,964 INFO L93 Difference]: Finished difference Result 1627 states and 4733 transitions. [2021-06-05 20:34:16,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 20:34:16,964 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:34:16,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:34:16,965 INFO L225 Difference]: With dead ends: 1627 [2021-06-05 20:34:16,965 INFO L226 Difference]: Without dead ends: 1530 [2021-06-05 20:34:16,966 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 48.6ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:16,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1530 states. [2021-06-05 20:34:16,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1530 to 1431. [2021-06-05 20:34:16,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1431 states, 1430 states have (on average 2.9391608391608393) internal successors, (4203), 1430 states have internal predecessors, (4203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:16,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1431 states to 1431 states and 4203 transitions. [2021-06-05 20:34:16,980 INFO L78 Accepts]: Start accepts. Automaton has 1431 states and 4203 transitions. Word has length 26 [2021-06-05 20:34:16,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:34:16,980 INFO L482 AbstractCegarLoop]: Abstraction has 1431 states and 4203 transitions. [2021-06-05 20:34:16,980 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:16,980 INFO L276 IsEmpty]: Start isEmpty. Operand 1431 states and 4203 transitions. [2021-06-05 20:34:16,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:34:16,981 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:34:16,981 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:34:16,981 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable154 [2021-06-05 20:34:16,981 INFO L430 AbstractCegarLoop]: === Iteration 156 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:34:16,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:34:16,981 INFO L82 PathProgramCache]: Analyzing trace with hash -258695136, now seen corresponding path program 154 times [2021-06-05 20:34:16,982 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:34:16,982 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [659589562] [2021-06-05 20:34:16,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:34:16,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:34:17,040 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:34:17,040 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:34:17,040 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [659589562] [2021-06-05 20:34:17,040 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [659589562] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:34:17,040 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:34:17,040 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 20:34:17,040 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1745168333] [2021-06-05 20:34:17,040 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 20:34:17,040 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:34:17,041 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 20:34:17,041 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:17,041 INFO L87 Difference]: Start difference. First operand 1431 states and 4203 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:17,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:34:17,208 INFO L93 Difference]: Finished difference Result 1607 states and 4663 transitions. [2021-06-05 20:34:17,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 20:34:17,208 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:34:17,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:34:17,210 INFO L225 Difference]: With dead ends: 1607 [2021-06-05 20:34:17,210 INFO L226 Difference]: Without dead ends: 1519 [2021-06-05 20:34:17,210 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 48.2ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:17,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1519 states. [2021-06-05 20:34:17,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1519 to 1430. [2021-06-05 20:34:17,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1430 states, 1429 states have (on average 2.941217634709587) internal successors, (4203), 1429 states have internal predecessors, (4203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:17,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1430 states to 1430 states and 4203 transitions. [2021-06-05 20:34:17,225 INFO L78 Accepts]: Start accepts. Automaton has 1430 states and 4203 transitions. Word has length 26 [2021-06-05 20:34:17,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:34:17,225 INFO L482 AbstractCegarLoop]: Abstraction has 1430 states and 4203 transitions. [2021-06-05 20:34:17,225 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:17,225 INFO L276 IsEmpty]: Start isEmpty. Operand 1430 states and 4203 transitions. [2021-06-05 20:34:17,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:34:17,227 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:34:17,227 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:34:17,227 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable155 [2021-06-05 20:34:17,227 INFO L430 AbstractCegarLoop]: === Iteration 157 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:34:17,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:34:17,227 INFO L82 PathProgramCache]: Analyzing trace with hash 1952637280, now seen corresponding path program 155 times [2021-06-05 20:34:17,227 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:34:17,227 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1249307117] [2021-06-05 20:34:17,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:34:17,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:34:17,283 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:34:17,283 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:34:17,283 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1249307117] [2021-06-05 20:34:17,283 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1249307117] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:34:17,283 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:34:17,283 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 20:34:17,283 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [750847990] [2021-06-05 20:34:17,283 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 20:34:17,283 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:34:17,283 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 20:34:17,283 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:17,283 INFO L87 Difference]: Start difference. First operand 1430 states and 4203 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:17,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:34:17,446 INFO L93 Difference]: Finished difference Result 1567 states and 4558 transitions. [2021-06-05 20:34:17,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 20:34:17,447 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:34:17,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:34:17,448 INFO L225 Difference]: With dead ends: 1567 [2021-06-05 20:34:17,448 INFO L226 Difference]: Without dead ends: 1488 [2021-06-05 20:34:17,448 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 48.3ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:17,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1488 states. [2021-06-05 20:34:17,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1488 to 1429. [2021-06-05 20:34:17,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1429 states, 1428 states have (on average 2.9404761904761907) internal successors, (4199), 1428 states have internal predecessors, (4199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:17,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1429 states to 1429 states and 4199 transitions. [2021-06-05 20:34:17,462 INFO L78 Accepts]: Start accepts. Automaton has 1429 states and 4199 transitions. Word has length 26 [2021-06-05 20:34:17,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:34:17,462 INFO L482 AbstractCegarLoop]: Abstraction has 1429 states and 4199 transitions. [2021-06-05 20:34:17,463 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:17,463 INFO L276 IsEmpty]: Start isEmpty. Operand 1429 states and 4199 transitions. [2021-06-05 20:34:17,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:34:17,464 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:34:17,464 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:34:17,464 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable156 [2021-06-05 20:34:17,464 INFO L430 AbstractCegarLoop]: === Iteration 158 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:34:17,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:34:17,464 INFO L82 PathProgramCache]: Analyzing trace with hash 1379240004, now seen corresponding path program 156 times [2021-06-05 20:34:17,464 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:34:17,464 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2008939861] [2021-06-05 20:34:17,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:34:17,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:34:17,520 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:34:17,520 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:34:17,521 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2008939861] [2021-06-05 20:34:17,521 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2008939861] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:34:17,521 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:34:17,521 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 20:34:17,521 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [385931332] [2021-06-05 20:34:17,521 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 20:34:17,521 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:34:17,521 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 20:34:17,521 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:17,521 INFO L87 Difference]: Start difference. First operand 1429 states and 4199 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:17,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:34:17,688 INFO L93 Difference]: Finished difference Result 1572 states and 4563 transitions. [2021-06-05 20:34:17,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 20:34:17,688 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:34:17,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:34:17,690 INFO L225 Difference]: With dead ends: 1572 [2021-06-05 20:34:17,690 INFO L226 Difference]: Without dead ends: 1489 [2021-06-05 20:34:17,690 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 47.9ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:17,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1489 states. [2021-06-05 20:34:17,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1489 to 1430. [2021-06-05 20:34:17,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1430 states, 1429 states have (on average 2.9391182645206437) internal successors, (4200), 1429 states have internal predecessors, (4200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:17,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1430 states to 1430 states and 4200 transitions. [2021-06-05 20:34:17,704 INFO L78 Accepts]: Start accepts. Automaton has 1430 states and 4200 transitions. Word has length 26 [2021-06-05 20:34:17,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:34:17,704 INFO L482 AbstractCegarLoop]: Abstraction has 1430 states and 4200 transitions. [2021-06-05 20:34:17,704 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:17,704 INFO L276 IsEmpty]: Start isEmpty. Operand 1430 states and 4200 transitions. [2021-06-05 20:34:17,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:34:17,705 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:34:17,705 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:34:17,705 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable157 [2021-06-05 20:34:17,705 INFO L430 AbstractCegarLoop]: === Iteration 159 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:34:17,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:34:17,706 INFO L82 PathProgramCache]: Analyzing trace with hash 560492734, now seen corresponding path program 157 times [2021-06-05 20:34:17,706 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:34:17,706 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [923217510] [2021-06-05 20:34:17,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:34:17,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:34:17,770 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:34:17,770 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:34:17,770 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [923217510] [2021-06-05 20:34:17,770 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [923217510] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:34:17,770 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:34:17,771 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 20:34:17,771 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2067119954] [2021-06-05 20:34:17,771 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 20:34:17,771 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:34:17,771 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 20:34:17,771 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:17,771 INFO L87 Difference]: Start difference. First operand 1430 states and 4200 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:17,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:34:17,929 INFO L93 Difference]: Finished difference Result 1645 states and 4769 transitions. [2021-06-05 20:34:17,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 20:34:17,929 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:34:17,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:34:17,931 INFO L225 Difference]: With dead ends: 1645 [2021-06-05 20:34:17,931 INFO L226 Difference]: Without dead ends: 1554 [2021-06-05 20:34:17,931 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 56.9ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:17,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1554 states. [2021-06-05 20:34:17,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1554 to 1426. [2021-06-05 20:34:17,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1426 states, 1425 states have (on average 2.937543859649123) internal successors, (4186), 1425 states have internal predecessors, (4186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:17,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1426 states to 1426 states and 4186 transitions. [2021-06-05 20:34:17,945 INFO L78 Accepts]: Start accepts. Automaton has 1426 states and 4186 transitions. Word has length 26 [2021-06-05 20:34:17,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:34:17,945 INFO L482 AbstractCegarLoop]: Abstraction has 1426 states and 4186 transitions. [2021-06-05 20:34:17,945 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:17,945 INFO L276 IsEmpty]: Start isEmpty. Operand 1426 states and 4186 transitions. [2021-06-05 20:34:17,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:34:17,946 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:34:17,947 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:34:17,947 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable158 [2021-06-05 20:34:17,947 INFO L430 AbstractCegarLoop]: === Iteration 160 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:34:17,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:34:17,947 INFO L82 PathProgramCache]: Analyzing trace with hash 130172868, now seen corresponding path program 158 times [2021-06-05 20:34:17,947 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:34:17,947 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2001489079] [2021-06-05 20:34:17,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:34:17,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:34:18,009 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:34:18,009 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:34:18,009 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2001489079] [2021-06-05 20:34:18,009 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2001489079] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:34:18,009 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:34:18,009 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 20:34:18,009 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1930511479] [2021-06-05 20:34:18,009 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 20:34:18,010 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:34:18,010 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 20:34:18,010 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:18,010 INFO L87 Difference]: Start difference. First operand 1426 states and 4186 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:18,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:34:18,176 INFO L93 Difference]: Finished difference Result 1595 states and 4605 transitions. [2021-06-05 20:34:18,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 20:34:18,177 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:34:18,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:34:18,178 INFO L225 Difference]: With dead ends: 1595 [2021-06-05 20:34:18,178 INFO L226 Difference]: Without dead ends: 1496 [2021-06-05 20:34:18,178 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 49.7ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:18,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1496 states. [2021-06-05 20:34:18,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1496 to 1431. [2021-06-05 20:34:18,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1431 states, 1430 states have (on average 2.9342657342657343) internal successors, (4196), 1430 states have internal predecessors, (4196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:18,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1431 states to 1431 states and 4196 transitions. [2021-06-05 20:34:18,192 INFO L78 Accepts]: Start accepts. Automaton has 1431 states and 4196 transitions. Word has length 26 [2021-06-05 20:34:18,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:34:18,193 INFO L482 AbstractCegarLoop]: Abstraction has 1431 states and 4196 transitions. [2021-06-05 20:34:18,193 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:18,193 INFO L276 IsEmpty]: Start isEmpty. Operand 1431 states and 4196 transitions. [2021-06-05 20:34:18,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:34:18,194 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:34:18,194 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:34:18,194 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable159 [2021-06-05 20:34:18,194 INFO L430 AbstractCegarLoop]: === Iteration 161 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:34:18,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:34:18,194 INFO L82 PathProgramCache]: Analyzing trace with hash -609950332, now seen corresponding path program 159 times [2021-06-05 20:34:18,194 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:34:18,194 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [906470413] [2021-06-05 20:34:18,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:34:18,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:34:18,250 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:34:18,250 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:34:18,250 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [906470413] [2021-06-05 20:34:18,250 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [906470413] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:34:18,250 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:34:18,250 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 20:34:18,250 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1865638196] [2021-06-05 20:34:18,250 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 20:34:18,250 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:34:18,251 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 20:34:18,251 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:18,251 INFO L87 Difference]: Start difference. First operand 1431 states and 4196 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:18,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:34:18,408 INFO L93 Difference]: Finished difference Result 1626 states and 4726 transitions. [2021-06-05 20:34:18,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 20:34:18,409 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:34:18,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:34:18,411 INFO L225 Difference]: With dead ends: 1626 [2021-06-05 20:34:18,411 INFO L226 Difference]: Without dead ends: 1529 [2021-06-05 20:34:18,411 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 48.2ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:18,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1529 states. [2021-06-05 20:34:18,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1529 to 1429. [2021-06-05 20:34:18,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1429 states, 1428 states have (on average 2.9327731092436973) internal successors, (4188), 1428 states have internal predecessors, (4188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:18,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1429 states to 1429 states and 4188 transitions. [2021-06-05 20:34:18,426 INFO L78 Accepts]: Start accepts. Automaton has 1429 states and 4188 transitions. Word has length 26 [2021-06-05 20:34:18,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:34:18,426 INFO L482 AbstractCegarLoop]: Abstraction has 1429 states and 4188 transitions. [2021-06-05 20:34:18,426 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:18,426 INFO L276 IsEmpty]: Start isEmpty. Operand 1429 states and 4188 transitions. [2021-06-05 20:34:18,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:34:18,427 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:34:18,427 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:34:18,427 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable160 [2021-06-05 20:34:18,427 INFO L430 AbstractCegarLoop]: === Iteration 162 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:34:18,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:34:18,427 INFO L82 PathProgramCache]: Analyzing trace with hash -1322018174, now seen corresponding path program 160 times [2021-06-05 20:34:18,427 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:34:18,427 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1121337430] [2021-06-05 20:34:18,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:34:18,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:34:18,483 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:34:18,483 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:34:18,483 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1121337430] [2021-06-05 20:34:18,483 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1121337430] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:34:18,483 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:34:18,483 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 20:34:18,483 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1094822126] [2021-06-05 20:34:18,483 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 20:34:18,483 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:34:18,483 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 20:34:18,484 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:18,484 INFO L87 Difference]: Start difference. First operand 1429 states and 4188 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:18,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:34:18,645 INFO L93 Difference]: Finished difference Result 1603 states and 4654 transitions. [2021-06-05 20:34:18,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 20:34:18,645 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:34:18,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:34:18,647 INFO L225 Difference]: With dead ends: 1603 [2021-06-05 20:34:18,647 INFO L226 Difference]: Without dead ends: 1517 [2021-06-05 20:34:18,647 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 48.3ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:18,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1517 states. [2021-06-05 20:34:18,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1517 to 1437. [2021-06-05 20:34:18,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1437 states, 1436 states have (on average 2.932451253481894) internal successors, (4211), 1436 states have internal predecessors, (4211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:18,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1437 states to 1437 states and 4211 transitions. [2021-06-05 20:34:18,661 INFO L78 Accepts]: Start accepts. Automaton has 1437 states and 4211 transitions. Word has length 26 [2021-06-05 20:34:18,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:34:18,661 INFO L482 AbstractCegarLoop]: Abstraction has 1437 states and 4211 transitions. [2021-06-05 20:34:18,661 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:18,661 INFO L276 IsEmpty]: Start isEmpty. Operand 1437 states and 4211 transitions. [2021-06-05 20:34:18,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:34:18,663 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:34:18,663 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:34:18,663 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable161 [2021-06-05 20:34:18,663 INFO L430 AbstractCegarLoop]: === Iteration 163 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:34:18,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:34:18,663 INFO L82 PathProgramCache]: Analyzing trace with hash -1411777824, now seen corresponding path program 161 times [2021-06-05 20:34:18,663 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:34:18,663 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [894586885] [2021-06-05 20:34:18,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:34:18,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:34:18,729 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:34:18,729 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:34:18,729 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [894586885] [2021-06-05 20:34:18,729 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [894586885] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:34:18,729 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:34:18,729 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 20:34:18,729 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [824643494] [2021-06-05 20:34:18,730 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 20:34:18,730 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:34:18,730 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 20:34:18,730 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:18,730 INFO L87 Difference]: Start difference. First operand 1437 states and 4211 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:18,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:34:18,917 INFO L93 Difference]: Finished difference Result 1577 states and 4563 transitions. [2021-06-05 20:34:18,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 20:34:18,918 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:34:18,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:34:18,919 INFO L225 Difference]: With dead ends: 1577 [2021-06-05 20:34:18,919 INFO L226 Difference]: Without dead ends: 1482 [2021-06-05 20:34:18,920 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 49.2ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:18,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1482 states. [2021-06-05 20:34:18,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1482 to 1420. [2021-06-05 20:34:18,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1420 states, 1419 states have (on average 2.9358703312191685) internal successors, (4166), 1419 states have internal predecessors, (4166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:18,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1420 states to 1420 states and 4166 transitions. [2021-06-05 20:34:18,934 INFO L78 Accepts]: Start accepts. Automaton has 1420 states and 4166 transitions. Word has length 26 [2021-06-05 20:34:18,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:34:18,934 INFO L482 AbstractCegarLoop]: Abstraction has 1420 states and 4166 transitions. [2021-06-05 20:34:18,934 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:18,934 INFO L276 IsEmpty]: Start isEmpty. Operand 1420 states and 4166 transitions. [2021-06-05 20:34:18,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:34:18,935 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:34:18,935 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:34:18,935 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable162 [2021-06-05 20:34:18,935 INFO L430 AbstractCegarLoop]: === Iteration 164 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:34:18,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:34:18,935 INFO L82 PathProgramCache]: Analyzing trace with hash -1692751788, now seen corresponding path program 162 times [2021-06-05 20:34:18,935 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:34:18,935 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1615046741] [2021-06-05 20:34:18,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:34:18,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:34:18,984 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:34:18,984 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:34:18,984 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1615046741] [2021-06-05 20:34:18,984 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1615046741] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:34:18,984 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:34:18,984 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:34:18,984 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1968626660] [2021-06-05 20:34:18,985 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-05 20:34:18,985 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:34:18,985 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-05 20:34:18,985 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:34:18,985 INFO L87 Difference]: Start difference. First operand 1420 states and 4166 transitions. Second operand has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:19,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:34:19,112 INFO L93 Difference]: Finished difference Result 1724 states and 5023 transitions. [2021-06-05 20:34:19,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-05 20:34:19,112 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:34:19,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:34:19,114 INFO L225 Difference]: With dead ends: 1724 [2021-06-05 20:34:19,114 INFO L226 Difference]: Without dead ends: 1639 [2021-06-05 20:34:19,114 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 39.2ms TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:34:19,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1639 states. [2021-06-05 20:34:19,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1639 to 1456. [2021-06-05 20:34:19,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1456 states, 1455 states have (on average 2.9381443298969074) internal successors, (4275), 1455 states have internal predecessors, (4275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:19,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1456 states to 1456 states and 4275 transitions. [2021-06-05 20:34:19,129 INFO L78 Accepts]: Start accepts. Automaton has 1456 states and 4275 transitions. Word has length 26 [2021-06-05 20:34:19,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:34:19,129 INFO L482 AbstractCegarLoop]: Abstraction has 1456 states and 4275 transitions. [2021-06-05 20:34:19,129 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:19,129 INFO L276 IsEmpty]: Start isEmpty. Operand 1456 states and 4275 transitions. [2021-06-05 20:34:19,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:34:19,130 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:34:19,130 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:34:19,130 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable163 [2021-06-05 20:34:19,131 INFO L430 AbstractCegarLoop]: === Iteration 165 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:34:19,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:34:19,131 INFO L82 PathProgramCache]: Analyzing trace with hash 2028818232, now seen corresponding path program 163 times [2021-06-05 20:34:19,131 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:34:19,131 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [825032056] [2021-06-05 20:34:19,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:34:19,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:34:19,190 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:34:19,190 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:34:19,190 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [825032056] [2021-06-05 20:34:19,190 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [825032056] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:34:19,190 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:34:19,190 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 20:34:19,190 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [494654380] [2021-06-05 20:34:19,190 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 20:34:19,190 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:34:19,190 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 20:34:19,190 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:19,190 INFO L87 Difference]: Start difference. First operand 1456 states and 4275 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:19,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:34:19,348 INFO L93 Difference]: Finished difference Result 1767 states and 5149 transitions. [2021-06-05 20:34:19,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 20:34:19,349 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:34:19,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:34:19,350 INFO L225 Difference]: With dead ends: 1767 [2021-06-05 20:34:19,350 INFO L226 Difference]: Without dead ends: 1619 [2021-06-05 20:34:19,350 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 47.4ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:19,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1619 states. [2021-06-05 20:34:19,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1619 to 1417. [2021-06-05 20:34:19,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1417 states, 1416 states have (on average 2.939265536723164) internal successors, (4162), 1416 states have internal predecessors, (4162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:19,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1417 states to 1417 states and 4162 transitions. [2021-06-05 20:34:19,365 INFO L78 Accepts]: Start accepts. Automaton has 1417 states and 4162 transitions. Word has length 26 [2021-06-05 20:34:19,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:34:19,365 INFO L482 AbstractCegarLoop]: Abstraction has 1417 states and 4162 transitions. [2021-06-05 20:34:19,365 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:19,365 INFO L276 IsEmpty]: Start isEmpty. Operand 1417 states and 4162 transitions. [2021-06-05 20:34:19,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:34:19,366 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:34:19,366 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:34:19,367 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable164 [2021-06-05 20:34:19,367 INFO L430 AbstractCegarLoop]: === Iteration 166 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:34:19,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:34:19,367 INFO L82 PathProgramCache]: Analyzing trace with hash 891859190, now seen corresponding path program 164 times [2021-06-05 20:34:19,367 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:34:19,367 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1897774564] [2021-06-05 20:34:19,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:34:19,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:34:19,424 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:34:19,424 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:34:19,424 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1897774564] [2021-06-05 20:34:19,424 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1897774564] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:34:19,424 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:34:19,424 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 20:34:19,424 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [738807687] [2021-06-05 20:34:19,425 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 20:34:19,425 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:34:19,425 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 20:34:19,425 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:19,425 INFO L87 Difference]: Start difference. First operand 1417 states and 4162 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:19,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:34:19,587 INFO L93 Difference]: Finished difference Result 1698 states and 4940 transitions. [2021-06-05 20:34:19,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 20:34:19,587 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:34:19,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:34:19,589 INFO L225 Difference]: With dead ends: 1698 [2021-06-05 20:34:19,589 INFO L226 Difference]: Without dead ends: 1613 [2021-06-05 20:34:19,589 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 48.5ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:19,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1613 states. [2021-06-05 20:34:19,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1613 to 1419. [2021-06-05 20:34:19,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1419 states, 1418 states have (on average 2.9386459802538787) internal successors, (4167), 1418 states have internal predecessors, (4167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:19,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1419 states to 1419 states and 4167 transitions. [2021-06-05 20:34:19,603 INFO L78 Accepts]: Start accepts. Automaton has 1419 states and 4167 transitions. Word has length 26 [2021-06-05 20:34:19,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:34:19,603 INFO L482 AbstractCegarLoop]: Abstraction has 1419 states and 4167 transitions. [2021-06-05 20:34:19,603 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:19,604 INFO L276 IsEmpty]: Start isEmpty. Operand 1419 states and 4167 transitions. [2021-06-05 20:34:19,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:34:19,605 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:34:19,605 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:34:19,605 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable165 [2021-06-05 20:34:19,605 INFO L430 AbstractCegarLoop]: === Iteration 167 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:34:19,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:34:19,605 INFO L82 PathProgramCache]: Analyzing trace with hash 318461914, now seen corresponding path program 165 times [2021-06-05 20:34:19,605 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:34:19,605 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1244273586] [2021-06-05 20:34:19,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:34:19,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:34:19,672 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:34:19,672 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:34:19,672 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1244273586] [2021-06-05 20:34:19,672 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1244273586] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:34:19,672 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:34:19,672 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 20:34:19,672 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1005506656] [2021-06-05 20:34:19,672 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 20:34:19,672 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:34:19,672 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 20:34:19,673 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:19,673 INFO L87 Difference]: Start difference. First operand 1419 states and 4167 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:19,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:34:19,838 INFO L93 Difference]: Finished difference Result 1732 states and 5057 transitions. [2021-06-05 20:34:19,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 20:34:19,838 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:34:19,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:34:19,840 INFO L225 Difference]: With dead ends: 1732 [2021-06-05 20:34:19,840 INFO L226 Difference]: Without dead ends: 1649 [2021-06-05 20:34:19,840 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 49.2ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:19,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1649 states. [2021-06-05 20:34:19,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1649 to 1438. [2021-06-05 20:34:19,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1438 states, 1437 states have (on average 2.942240779401531) internal successors, (4228), 1437 states have internal predecessors, (4228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:19,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1438 states to 1438 states and 4228 transitions. [2021-06-05 20:34:19,860 INFO L78 Accepts]: Start accepts. Automaton has 1438 states and 4228 transitions. Word has length 26 [2021-06-05 20:34:19,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:34:19,860 INFO L482 AbstractCegarLoop]: Abstraction has 1438 states and 4228 transitions. [2021-06-05 20:34:19,860 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:19,860 INFO L276 IsEmpty]: Start isEmpty. Operand 1438 states and 4228 transitions. [2021-06-05 20:34:19,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:34:19,861 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:34:19,861 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:34:19,861 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable166 [2021-06-05 20:34:19,861 INFO L430 AbstractCegarLoop]: === Iteration 168 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:34:19,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:34:19,861 INFO L82 PathProgramCache]: Analyzing trace with hash -930605222, now seen corresponding path program 166 times [2021-06-05 20:34:19,862 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:34:19,862 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [768111397] [2021-06-05 20:34:19,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:34:19,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:34:19,916 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:34:19,916 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:34:19,917 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [768111397] [2021-06-05 20:34:19,917 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [768111397] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:34:19,917 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:34:19,917 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 20:34:19,917 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1549230104] [2021-06-05 20:34:19,917 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 20:34:19,917 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:34:19,917 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 20:34:19,917 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:19,917 INFO L87 Difference]: Start difference. First operand 1438 states and 4228 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:20,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:34:20,080 INFO L93 Difference]: Finished difference Result 1748 states and 5073 transitions. [2021-06-05 20:34:20,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 20:34:20,080 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:34:20,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:34:20,082 INFO L225 Difference]: With dead ends: 1748 [2021-06-05 20:34:20,082 INFO L226 Difference]: Without dead ends: 1639 [2021-06-05 20:34:20,082 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 47.6ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:20,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1639 states. [2021-06-05 20:34:20,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1639 to 1406. [2021-06-05 20:34:20,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1406 states, 1405 states have (on average 2.9395017793594307) internal successors, (4130), 1405 states have internal predecessors, (4130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:20,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1406 states to 1406 states and 4130 transitions. [2021-06-05 20:34:20,097 INFO L78 Accepts]: Start accepts. Automaton has 1406 states and 4130 transitions. Word has length 26 [2021-06-05 20:34:20,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:34:20,097 INFO L482 AbstractCegarLoop]: Abstraction has 1406 states and 4130 transitions. [2021-06-05 20:34:20,097 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:20,097 INFO L276 IsEmpty]: Start isEmpty. Operand 1406 states and 4130 transitions. [2021-06-05 20:34:20,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:34:20,098 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:34:20,098 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:34:20,098 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable167 [2021-06-05 20:34:20,098 INFO L430 AbstractCegarLoop]: === Iteration 169 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:34:20,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:34:20,098 INFO L82 PathProgramCache]: Analyzing trace with hash -781109324, now seen corresponding path program 167 times [2021-06-05 20:34:20,098 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:34:20,098 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [438285270] [2021-06-05 20:34:20,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:34:20,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:34:20,137 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:34:20,137 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:34:20,137 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [438285270] [2021-06-05 20:34:20,137 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [438285270] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:34:20,137 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:34:20,137 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-05 20:34:20,137 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2119789137] [2021-06-05 20:34:20,137 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 20:34:20,137 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:34:20,137 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 20:34:20,137 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:34:20,138 INFO L87 Difference]: Start difference. First operand 1406 states and 4130 transitions. Second operand has 8 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 7 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:20,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:34:20,235 INFO L93 Difference]: Finished difference Result 1712 states and 4985 transitions. [2021-06-05 20:34:20,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 20:34:20,236 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 7 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:34:20,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:34:20,237 INFO L225 Difference]: With dead ends: 1712 [2021-06-05 20:34:20,237 INFO L226 Difference]: Without dead ends: 1615 [2021-06-05 20:34:20,237 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 31.3ms TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:34:20,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1615 states. [2021-06-05 20:34:20,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1615 to 1488. [2021-06-05 20:34:20,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1488 states, 1487 states have (on average 2.9361129791526563) internal successors, (4366), 1487 states have internal predecessors, (4366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:20,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1488 states to 1488 states and 4366 transitions. [2021-06-05 20:34:20,252 INFO L78 Accepts]: Start accepts. Automaton has 1488 states and 4366 transitions. Word has length 26 [2021-06-05 20:34:20,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:34:20,252 INFO L482 AbstractCegarLoop]: Abstraction has 1488 states and 4366 transitions. [2021-06-05 20:34:20,252 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 7 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:20,252 INFO L276 IsEmpty]: Start isEmpty. Operand 1488 states and 4366 transitions. [2021-06-05 20:34:20,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:34:20,254 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:34:20,254 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:34:20,254 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable168 [2021-06-05 20:34:20,254 INFO L430 AbstractCegarLoop]: === Iteration 170 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:34:20,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:34:20,254 INFO L82 PathProgramCache]: Analyzing trace with hash 88335284, now seen corresponding path program 168 times [2021-06-05 20:34:20,254 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:34:20,254 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [474821718] [2021-06-05 20:34:20,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:34:20,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:34:20,302 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:34:20,302 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:34:20,302 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [474821718] [2021-06-05 20:34:20,303 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [474821718] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:34:20,303 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:34:20,303 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:34:20,303 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1986594009] [2021-06-05 20:34:20,303 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-05 20:34:20,303 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:34:20,303 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-05 20:34:20,303 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:34:20,303 INFO L87 Difference]: Start difference. First operand 1488 states and 4366 transitions. Second operand has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:20,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:34:20,430 INFO L93 Difference]: Finished difference Result 1769 states and 5133 transitions. [2021-06-05 20:34:20,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-05 20:34:20,430 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:34:20,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:34:20,432 INFO L225 Difference]: With dead ends: 1769 [2021-06-05 20:34:20,432 INFO L226 Difference]: Without dead ends: 1570 [2021-06-05 20:34:20,432 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 38.7ms TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:34:20,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1570 states. [2021-06-05 20:34:20,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1570 to 1462. [2021-06-05 20:34:20,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1462 states, 1461 states have (on average 2.926762491444216) internal successors, (4276), 1461 states have internal predecessors, (4276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:20,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1462 states to 1462 states and 4276 transitions. [2021-06-05 20:34:20,447 INFO L78 Accepts]: Start accepts. Automaton has 1462 states and 4276 transitions. Word has length 26 [2021-06-05 20:34:20,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:34:20,447 INFO L482 AbstractCegarLoop]: Abstraction has 1462 states and 4276 transitions. [2021-06-05 20:34:20,447 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:20,447 INFO L276 IsEmpty]: Start isEmpty. Operand 1462 states and 4276 transitions. [2021-06-05 20:34:20,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:34:20,448 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:34:20,448 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:34:20,448 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable169 [2021-06-05 20:34:20,448 INFO L430 AbstractCegarLoop]: === Iteration 171 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:34:20,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:34:20,449 INFO L82 PathProgramCache]: Analyzing trace with hash 1796117202, now seen corresponding path program 169 times [2021-06-05 20:34:20,449 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:34:20,449 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1155044627] [2021-06-05 20:34:20,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:34:20,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:34:20,495 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:34:20,495 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:34:20,495 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1155044627] [2021-06-05 20:34:20,495 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1155044627] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:34:20,495 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:34:20,495 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:34:20,495 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [253752541] [2021-06-05 20:34:20,495 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-05 20:34:20,496 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:34:20,496 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-05 20:34:20,496 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:34:20,496 INFO L87 Difference]: Start difference. First operand 1462 states and 4276 transitions. Second operand has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:20,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:34:20,622 INFO L93 Difference]: Finished difference Result 1668 states and 4808 transitions. [2021-06-05 20:34:20,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-05 20:34:20,623 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:34:20,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:34:20,624 INFO L225 Difference]: With dead ends: 1668 [2021-06-05 20:34:20,624 INFO L226 Difference]: Without dead ends: 1571 [2021-06-05 20:34:20,624 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 39.0ms TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:34:20,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1571 states. [2021-06-05 20:34:20,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1571 to 1452. [2021-06-05 20:34:20,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1452 states, 1451 states have (on average 2.9297036526533424) internal successors, (4251), 1451 states have internal predecessors, (4251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:20,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1452 states to 1452 states and 4251 transitions. [2021-06-05 20:34:20,639 INFO L78 Accepts]: Start accepts. Automaton has 1452 states and 4251 transitions. Word has length 26 [2021-06-05 20:34:20,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:34:20,639 INFO L482 AbstractCegarLoop]: Abstraction has 1452 states and 4251 transitions. [2021-06-05 20:34:20,639 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:20,639 INFO L276 IsEmpty]: Start isEmpty. Operand 1452 states and 4251 transitions. [2021-06-05 20:34:20,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:34:20,640 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:34:20,640 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:34:20,640 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable170 [2021-06-05 20:34:20,641 INFO L430 AbstractCegarLoop]: === Iteration 172 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:34:20,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:34:20,641 INFO L82 PathProgramCache]: Analyzing trace with hash -1629405486, now seen corresponding path program 170 times [2021-06-05 20:34:20,641 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:34:20,641 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [352418989] [2021-06-05 20:34:20,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:34:20,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:34:20,696 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:34:20,696 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:34:20,696 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [352418989] [2021-06-05 20:34:20,696 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [352418989] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:34:20,696 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:34:20,696 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 20:34:20,696 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1403949247] [2021-06-05 20:34:20,697 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 20:34:20,697 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:34:20,697 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 20:34:20,697 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:20,697 INFO L87 Difference]: Start difference. First operand 1452 states and 4251 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:20,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:34:20,858 INFO L93 Difference]: Finished difference Result 1677 states and 4834 transitions. [2021-06-05 20:34:20,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 20:34:20,859 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:34:20,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:34:20,860 INFO L225 Difference]: With dead ends: 1677 [2021-06-05 20:34:20,860 INFO L226 Difference]: Without dead ends: 1550 [2021-06-05 20:34:20,860 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 48.4ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:20,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1550 states. [2021-06-05 20:34:20,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1550 to 1470. [2021-06-05 20:34:20,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1470 states, 1469 states have (on average 2.9183117767188564) internal successors, (4287), 1469 states have internal predecessors, (4287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:20,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1470 states to 1470 states and 4287 transitions. [2021-06-05 20:34:20,875 INFO L78 Accepts]: Start accepts. Automaton has 1470 states and 4287 transitions. Word has length 26 [2021-06-05 20:34:20,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:34:20,875 INFO L482 AbstractCegarLoop]: Abstraction has 1470 states and 4287 transitions. [2021-06-05 20:34:20,875 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:20,875 INFO L276 IsEmpty]: Start isEmpty. Operand 1470 states and 4287 transitions. [2021-06-05 20:34:20,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:34:20,876 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:34:20,876 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:34:20,876 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable171 [2021-06-05 20:34:20,876 INFO L430 AbstractCegarLoop]: === Iteration 173 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:34:20,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:34:20,876 INFO L82 PathProgramCache]: Analyzing trace with hash 623453304, now seen corresponding path program 171 times [2021-06-05 20:34:20,876 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:34:20,876 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1619704466] [2021-06-05 20:34:20,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:34:20,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:34:20,922 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:34:20,922 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:34:20,922 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1619704466] [2021-06-05 20:34:20,922 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1619704466] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:34:20,922 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:34:20,922 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:34:20,923 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1586393768] [2021-06-05 20:34:20,923 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-05 20:34:20,923 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:34:20,923 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-05 20:34:20,923 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:34:20,923 INFO L87 Difference]: Start difference. First operand 1470 states and 4287 transitions. Second operand has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:21,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:34:21,048 INFO L93 Difference]: Finished difference Result 1737 states and 5007 transitions. [2021-06-05 20:34:21,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-05 20:34:21,048 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:34:21,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:34:21,050 INFO L225 Difference]: With dead ends: 1737 [2021-06-05 20:34:21,050 INFO L226 Difference]: Without dead ends: 1622 [2021-06-05 20:34:21,050 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 38.5ms TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:34:21,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1622 states. [2021-06-05 20:34:21,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1622 to 1476. [2021-06-05 20:34:21,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1476 states, 1475 states have (on average 2.9125423728813558) internal successors, (4296), 1475 states have internal predecessors, (4296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:21,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1476 states to 1476 states and 4296 transitions. [2021-06-05 20:34:21,064 INFO L78 Accepts]: Start accepts. Automaton has 1476 states and 4296 transitions. Word has length 26 [2021-06-05 20:34:21,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:34:21,064 INFO L482 AbstractCegarLoop]: Abstraction has 1476 states and 4296 transitions. [2021-06-05 20:34:21,064 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:21,065 INFO L276 IsEmpty]: Start isEmpty. Operand 1476 states and 4296 transitions. [2021-06-05 20:34:21,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:34:21,066 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:34:21,066 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:34:21,066 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable172 [2021-06-05 20:34:21,066 INFO L430 AbstractCegarLoop]: === Iteration 174 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:34:21,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:34:21,066 INFO L82 PathProgramCache]: Analyzing trace with hash 1210004152, now seen corresponding path program 172 times [2021-06-05 20:34:21,066 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:34:21,066 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [283764916] [2021-06-05 20:34:21,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:34:21,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:34:21,120 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:34:21,120 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:34:21,121 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [283764916] [2021-06-05 20:34:21,121 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [283764916] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:34:21,121 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:34:21,121 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 20:34:21,121 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [46132504] [2021-06-05 20:34:21,121 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 20:34:21,121 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:34:21,121 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 20:34:21,121 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:21,121 INFO L87 Difference]: Start difference. First operand 1476 states and 4296 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:21,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:34:21,276 INFO L93 Difference]: Finished difference Result 1779 states and 5100 transitions. [2021-06-05 20:34:21,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 20:34:21,277 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:34:21,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:34:21,278 INFO L225 Difference]: With dead ends: 1779 [2021-06-05 20:34:21,278 INFO L226 Difference]: Without dead ends: 1623 [2021-06-05 20:34:21,278 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 47.1ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:21,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1623 states. [2021-06-05 20:34:21,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1623 to 1498. [2021-06-05 20:34:21,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1498 states, 1497 states have (on average 2.9138276553106213) internal successors, (4362), 1497 states have internal predecessors, (4362), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:21,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1498 states to 1498 states and 4362 transitions. [2021-06-05 20:34:21,294 INFO L78 Accepts]: Start accepts. Automaton has 1498 states and 4362 transitions. Word has length 26 [2021-06-05 20:34:21,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:34:21,294 INFO L482 AbstractCegarLoop]: Abstraction has 1498 states and 4362 transitions. [2021-06-05 20:34:21,294 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:21,294 INFO L276 IsEmpty]: Start isEmpty. Operand 1498 states and 4362 transitions. [2021-06-05 20:34:21,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:34:21,295 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:34:21,295 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:34:21,295 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable173 [2021-06-05 20:34:21,296 INFO L430 AbstractCegarLoop]: === Iteration 175 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:34:21,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:34:21,296 INFO L82 PathProgramCache]: Analyzing trace with hash 497936310, now seen corresponding path program 173 times [2021-06-05 20:34:21,296 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:34:21,296 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [809564632] [2021-06-05 20:34:21,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:34:21,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:34:21,351 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:34:21,351 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:34:21,351 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [809564632] [2021-06-05 20:34:21,351 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [809564632] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:34:21,351 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:34:21,351 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 20:34:21,351 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [817719903] [2021-06-05 20:34:21,351 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 20:34:21,351 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:34:21,351 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 20:34:21,351 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:21,351 INFO L87 Difference]: Start difference. First operand 1498 states and 4362 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:21,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:34:21,508 INFO L93 Difference]: Finished difference Result 1823 states and 5246 transitions. [2021-06-05 20:34:21,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 20:34:21,508 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:34:21,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:34:21,510 INFO L225 Difference]: With dead ends: 1823 [2021-06-05 20:34:21,510 INFO L226 Difference]: Without dead ends: 1667 [2021-06-05 20:34:21,510 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 47.8ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:21,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1667 states. [2021-06-05 20:34:21,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1667 to 1522. [2021-06-05 20:34:21,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1522 states, 1521 states have (on average 2.9145299145299144) internal successors, (4433), 1521 states have internal predecessors, (4433), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:21,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1522 states to 1522 states and 4433 transitions. [2021-06-05 20:34:21,525 INFO L78 Accepts]: Start accepts. Automaton has 1522 states and 4433 transitions. Word has length 26 [2021-06-05 20:34:21,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:34:21,525 INFO L482 AbstractCegarLoop]: Abstraction has 1522 states and 4433 transitions. [2021-06-05 20:34:21,525 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:21,525 INFO L276 IsEmpty]: Start isEmpty. Operand 1522 states and 4433 transitions. [2021-06-05 20:34:21,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:34:21,527 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:34:21,527 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:34:21,527 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable174 [2021-06-05 20:34:21,527 INFO L430 AbstractCegarLoop]: === Iteration 176 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:34:21,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:34:21,527 INFO L82 PathProgramCache]: Analyzing trace with hash -465295700, now seen corresponding path program 174 times [2021-06-05 20:34:21,527 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:34:21,527 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1368079819] [2021-06-05 20:34:21,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:34:21,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:34:21,572 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:34:21,572 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:34:21,572 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1368079819] [2021-06-05 20:34:21,572 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1368079819] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:34:21,572 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:34:21,572 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:34:21,572 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [963332407] [2021-06-05 20:34:21,572 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-05 20:34:21,572 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:34:21,572 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-05 20:34:21,572 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:34:21,573 INFO L87 Difference]: Start difference. First operand 1522 states and 4433 transitions. Second operand has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:21,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:34:21,699 INFO L93 Difference]: Finished difference Result 1900 states and 5461 transitions. [2021-06-05 20:34:21,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-05 20:34:21,700 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:34:21,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:34:21,701 INFO L225 Difference]: With dead ends: 1900 [2021-06-05 20:34:21,701 INFO L226 Difference]: Without dead ends: 1636 [2021-06-05 20:34:21,701 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 37.9ms TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:34:21,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1636 states. [2021-06-05 20:34:21,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1636 to 1508. [2021-06-05 20:34:21,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1508 states, 1507 states have (on average 2.891838088918381) internal successors, (4358), 1507 states have internal predecessors, (4358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:21,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1508 states to 1508 states and 4358 transitions. [2021-06-05 20:34:21,716 INFO L78 Accepts]: Start accepts. Automaton has 1508 states and 4358 transitions. Word has length 26 [2021-06-05 20:34:21,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:34:21,716 INFO L482 AbstractCegarLoop]: Abstraction has 1508 states and 4358 transitions. [2021-06-05 20:34:21,716 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:21,716 INFO L276 IsEmpty]: Start isEmpty. Operand 1508 states and 4358 transitions. [2021-06-05 20:34:21,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:34:21,718 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:34:21,718 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:34:21,718 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable175 [2021-06-05 20:34:21,718 INFO L430 AbstractCegarLoop]: === Iteration 177 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:34:21,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:34:21,718 INFO L82 PathProgramCache]: Analyzing trace with hash -2044727346, now seen corresponding path program 175 times [2021-06-05 20:34:21,718 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:34:21,718 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1307854733] [2021-06-05 20:34:21,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:34:21,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:34:21,782 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:34:21,782 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:34:21,782 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1307854733] [2021-06-05 20:34:21,782 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1307854733] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:34:21,782 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:34:21,782 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 20:34:21,782 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [849630685] [2021-06-05 20:34:21,782 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 20:34:21,783 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:34:21,783 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 20:34:21,783 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:21,783 INFO L87 Difference]: Start difference. First operand 1508 states and 4358 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:21,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:34:21,935 INFO L93 Difference]: Finished difference Result 1766 states and 4965 transitions. [2021-06-05 20:34:21,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 20:34:21,935 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:34:21,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:34:21,937 INFO L225 Difference]: With dead ends: 1766 [2021-06-05 20:34:21,937 INFO L226 Difference]: Without dead ends: 1508 [2021-06-05 20:34:21,937 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 54.8ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:21,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1508 states. [2021-06-05 20:34:21,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1508 to 1438. [2021-06-05 20:34:21,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1438 states, 1437 states have (on average 2.837160751565762) internal successors, (4077), 1437 states have internal predecessors, (4077), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:21,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1438 states to 1438 states and 4077 transitions. [2021-06-05 20:34:21,951 INFO L78 Accepts]: Start accepts. Automaton has 1438 states and 4077 transitions. Word has length 26 [2021-06-05 20:34:21,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:34:21,951 INFO L482 AbstractCegarLoop]: Abstraction has 1438 states and 4077 transitions. [2021-06-05 20:34:21,951 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:21,951 INFO L276 IsEmpty]: Start isEmpty. Operand 1438 states and 4077 transitions. [2021-06-05 20:34:21,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:34:21,952 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:34:21,952 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:34:21,952 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable176 [2021-06-05 20:34:21,952 INFO L430 AbstractCegarLoop]: === Iteration 178 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:34:21,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:34:21,952 INFO L82 PathProgramCache]: Analyzing trace with hash -1066489600, now seen corresponding path program 176 times [2021-06-05 20:34:21,952 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:34:21,952 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1210662987] [2021-06-05 20:34:21,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:34:21,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:34:22,006 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:34:22,007 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:34:22,007 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1210662987] [2021-06-05 20:34:22,007 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1210662987] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:34:22,007 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:34:22,007 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 20:34:22,007 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1436120545] [2021-06-05 20:34:22,007 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 20:34:22,007 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:34:22,007 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 20:34:22,007 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:22,007 INFO L87 Difference]: Start difference. First operand 1438 states and 4077 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:22,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:34:22,164 INFO L93 Difference]: Finished difference Result 1656 states and 4633 transitions. [2021-06-05 20:34:22,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 20:34:22,164 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:34:22,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:34:22,165 INFO L225 Difference]: With dead ends: 1656 [2021-06-05 20:34:22,165 INFO L226 Difference]: Without dead ends: 1505 [2021-06-05 20:34:22,166 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 47.2ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:22,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1505 states. [2021-06-05 20:34:22,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1505 to 1438. [2021-06-05 20:34:22,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1438 states, 1437 states have (on average 2.8288100208768268) internal successors, (4065), 1437 states have internal predecessors, (4065), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:22,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1438 states to 1438 states and 4065 transitions. [2021-06-05 20:34:22,179 INFO L78 Accepts]: Start accepts. Automaton has 1438 states and 4065 transitions. Word has length 26 [2021-06-05 20:34:22,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:34:22,179 INFO L482 AbstractCegarLoop]: Abstraction has 1438 states and 4065 transitions. [2021-06-05 20:34:22,179 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:22,179 INFO L276 IsEmpty]: Start isEmpty. Operand 1438 states and 4065 transitions. [2021-06-05 20:34:22,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:34:22,181 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:34:22,181 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:34:22,181 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable177 [2021-06-05 20:34:22,181 INFO L430 AbstractCegarLoop]: === Iteration 179 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:34:22,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:34:22,181 INFO L82 PathProgramCache]: Analyzing trace with hash -479938752, now seen corresponding path program 177 times [2021-06-05 20:34:22,181 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:34:22,181 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [303650813] [2021-06-05 20:34:22,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:34:22,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:34:22,240 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:34:22,240 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:34:22,240 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [303650813] [2021-06-05 20:34:22,240 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [303650813] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:34:22,240 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:34:22,240 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 20:34:22,240 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [219280337] [2021-06-05 20:34:22,240 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 20:34:22,240 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:34:22,240 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 20:34:22,240 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:22,241 INFO L87 Difference]: Start difference. First operand 1438 states and 4065 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:22,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:34:22,399 INFO L93 Difference]: Finished difference Result 1661 states and 4643 transitions. [2021-06-05 20:34:22,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 20:34:22,400 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:34:22,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:34:22,401 INFO L225 Difference]: With dead ends: 1661 [2021-06-05 20:34:22,401 INFO L226 Difference]: Without dead ends: 1541 [2021-06-05 20:34:22,402 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 48.0ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:22,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1541 states. [2021-06-05 20:34:22,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1541 to 1464. [2021-06-05 20:34:22,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1464 states, 1463 states have (on average 2.830485304169515) internal successors, (4141), 1463 states have internal predecessors, (4141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:22,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1464 states to 1464 states and 4141 transitions. [2021-06-05 20:34:22,416 INFO L78 Accepts]: Start accepts. Automaton has 1464 states and 4141 transitions. Word has length 26 [2021-06-05 20:34:22,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:34:22,416 INFO L482 AbstractCegarLoop]: Abstraction has 1464 states and 4141 transitions. [2021-06-05 20:34:22,416 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:22,416 INFO L276 IsEmpty]: Start isEmpty. Operand 1464 states and 4141 transitions. [2021-06-05 20:34:22,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:34:22,418 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:34:22,418 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:34:22,418 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable178 [2021-06-05 20:34:22,418 INFO L430 AbstractCegarLoop]: === Iteration 180 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:34:22,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:34:22,418 INFO L82 PathProgramCache]: Analyzing trace with hash -1192006594, now seen corresponding path program 178 times [2021-06-05 20:34:22,418 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:34:22,418 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [453617986] [2021-06-05 20:34:22,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:34:22,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:34:22,476 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:34:22,476 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:34:22,476 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [453617986] [2021-06-05 20:34:22,476 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [453617986] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:34:22,476 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:34:22,476 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 20:34:22,476 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1245593152] [2021-06-05 20:34:22,476 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 20:34:22,476 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:34:22,476 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 20:34:22,476 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:22,477 INFO L87 Difference]: Start difference. First operand 1464 states and 4141 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:22,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:34:22,636 INFO L93 Difference]: Finished difference Result 1719 states and 4756 transitions. [2021-06-05 20:34:22,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 20:34:22,636 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:34:22,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:34:22,638 INFO L225 Difference]: With dead ends: 1719 [2021-06-05 20:34:22,638 INFO L226 Difference]: Without dead ends: 1599 [2021-06-05 20:34:22,638 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 48.1ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:22,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1599 states. [2021-06-05 20:34:22,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1599 to 1456. [2021-06-05 20:34:22,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1456 states, 1455 states have (on average 2.8316151202749142) internal successors, (4120), 1455 states have internal predecessors, (4120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:22,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1456 states to 1456 states and 4120 transitions. [2021-06-05 20:34:22,652 INFO L78 Accepts]: Start accepts. Automaton has 1456 states and 4120 transitions. Word has length 26 [2021-06-05 20:34:22,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:34:22,652 INFO L482 AbstractCegarLoop]: Abstraction has 1456 states and 4120 transitions. [2021-06-05 20:34:22,652 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:22,652 INFO L276 IsEmpty]: Start isEmpty. Operand 1456 states and 4120 transitions. [2021-06-05 20:34:22,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:34:22,653 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:34:22,653 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:34:22,653 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable179 [2021-06-05 20:34:22,654 INFO L430 AbstractCegarLoop]: === Iteration 181 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:34:22,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:34:22,654 INFO L82 PathProgramCache]: Analyzing trace with hash -1037569076, now seen corresponding path program 179 times [2021-06-05 20:34:22,654 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:34:22,654 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [208871737] [2021-06-05 20:34:22,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:34:22,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:34:22,711 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:34:22,711 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:34:22,711 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [208871737] [2021-06-05 20:34:22,712 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [208871737] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:34:22,712 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:34:22,712 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 20:34:22,712 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [295997268] [2021-06-05 20:34:22,712 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 20:34:22,712 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:34:22,712 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 20:34:22,712 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:22,712 INFO L87 Difference]: Start difference. First operand 1456 states and 4120 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:22,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:34:22,892 INFO L93 Difference]: Finished difference Result 1748 states and 4846 transitions. [2021-06-05 20:34:22,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 20:34:22,893 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:34:22,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:34:22,894 INFO L225 Difference]: With dead ends: 1748 [2021-06-05 20:34:22,894 INFO L226 Difference]: Without dead ends: 1524 [2021-06-05 20:34:22,895 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 47.6ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:22,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1524 states. [2021-06-05 20:34:22,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1524 to 1396. [2021-06-05 20:34:22,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1396 states, 1395 states have (on average 2.8315412186379927) internal successors, (3950), 1395 states have internal predecessors, (3950), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:22,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1396 states to 1396 states and 3950 transitions. [2021-06-05 20:34:22,909 INFO L78 Accepts]: Start accepts. Automaton has 1396 states and 3950 transitions. Word has length 26 [2021-06-05 20:34:22,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:34:22,909 INFO L482 AbstractCegarLoop]: Abstraction has 1396 states and 3950 transitions. [2021-06-05 20:34:22,909 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:22,909 INFO L276 IsEmpty]: Start isEmpty. Operand 1396 states and 3950 transitions. [2021-06-05 20:34:22,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:34:22,910 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:34:22,910 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:34:22,910 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable180 [2021-06-05 20:34:22,910 INFO L430 AbstractCegarLoop]: === Iteration 182 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:34:22,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:34:22,911 INFO L82 PathProgramCache]: Analyzing trace with hash 538943446, now seen corresponding path program 180 times [2021-06-05 20:34:22,911 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:34:22,911 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1156790972] [2021-06-05 20:34:22,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:34:22,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:34:22,958 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:34:22,958 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:34:22,958 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1156790972] [2021-06-05 20:34:22,958 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1156790972] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:34:22,958 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:34:22,958 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:34:22,958 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [679163963] [2021-06-05 20:34:22,958 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-05 20:34:22,958 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:34:22,959 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-05 20:34:22,959 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:34:22,959 INFO L87 Difference]: Start difference. First operand 1396 states and 3950 transitions. Second operand has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:23,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:34:23,086 INFO L93 Difference]: Finished difference Result 1674 states and 4682 transitions. [2021-06-05 20:34:23,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-05 20:34:23,087 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:34:23,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:34:23,088 INFO L225 Difference]: With dead ends: 1674 [2021-06-05 20:34:23,088 INFO L226 Difference]: Without dead ends: 1589 [2021-06-05 20:34:23,088 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 39.6ms TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:34:23,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1589 states. [2021-06-05 20:34:23,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1589 to 1426. [2021-06-05 20:34:23,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1426 states, 1425 states have (on average 2.829473684210526) internal successors, (4032), 1425 states have internal predecessors, (4032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:23,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1426 states to 1426 states and 4032 transitions. [2021-06-05 20:34:23,102 INFO L78 Accepts]: Start accepts. Automaton has 1426 states and 4032 transitions. Word has length 26 [2021-06-05 20:34:23,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:34:23,102 INFO L482 AbstractCegarLoop]: Abstraction has 1426 states and 4032 transitions. [2021-06-05 20:34:23,102 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:23,102 INFO L276 IsEmpty]: Start isEmpty. Operand 1426 states and 4032 transitions. [2021-06-05 20:34:23,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:34:23,103 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:34:23,103 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:34:23,104 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable181 [2021-06-05 20:34:23,104 INFO L430 AbstractCegarLoop]: === Iteration 183 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:34:23,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:34:23,104 INFO L82 PathProgramCache]: Analyzing trace with hash 1408388054, now seen corresponding path program 181 times [2021-06-05 20:34:23,104 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:34:23,104 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1304603032] [2021-06-05 20:34:23,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:34:23,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:34:23,159 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:34:23,159 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:34:23,159 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1304603032] [2021-06-05 20:34:23,159 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1304603032] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:34:23,159 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:34:23,160 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 20:34:23,160 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1992351051] [2021-06-05 20:34:23,160 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 20:34:23,160 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:34:23,160 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 20:34:23,160 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:23,160 INFO L87 Difference]: Start difference. First operand 1426 states and 4032 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:23,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:34:23,316 INFO L93 Difference]: Finished difference Result 1703 states and 4751 transitions. [2021-06-05 20:34:23,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 20:34:23,316 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:34:23,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:34:23,318 INFO L225 Difference]: With dead ends: 1703 [2021-06-05 20:34:23,318 INFO L226 Difference]: Without dead ends: 1516 [2021-06-05 20:34:23,318 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 47.6ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:23,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1516 states. [2021-06-05 20:34:23,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1516 to 1388. [2021-06-05 20:34:23,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1388 states, 1387 states have (on average 2.8197548666186014) internal successors, (3911), 1387 states have internal predecessors, (3911), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:23,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1388 states to 1388 states and 3911 transitions. [2021-06-05 20:34:23,331 INFO L78 Accepts]: Start accepts. Automaton has 1388 states and 3911 transitions. Word has length 26 [2021-06-05 20:34:23,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:34:23,331 INFO L482 AbstractCegarLoop]: Abstraction has 1388 states and 3911 transitions. [2021-06-05 20:34:23,331 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:23,331 INFO L276 IsEmpty]: Start isEmpty. Operand 1388 states and 3911 transitions. [2021-06-05 20:34:23,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:34:23,333 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:34:23,333 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:34:23,333 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable182 [2021-06-05 20:34:23,333 INFO L430 AbstractCegarLoop]: === Iteration 184 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:34:23,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:34:23,333 INFO L82 PathProgramCache]: Analyzing trace with hash -1178797324, now seen corresponding path program 182 times [2021-06-05 20:34:23,333 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:34:23,333 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [803118356] [2021-06-05 20:34:23,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:34:23,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:34:23,387 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:34:23,388 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:34:23,388 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [803118356] [2021-06-05 20:34:23,388 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [803118356] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:34:23,388 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:34:23,388 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 20:34:23,388 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [417997563] [2021-06-05 20:34:23,388 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 20:34:23,388 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:34:23,388 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 20:34:23,388 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:23,388 INFO L87 Difference]: Start difference. First operand 1388 states and 3911 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:23,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:34:23,546 INFO L93 Difference]: Finished difference Result 1583 states and 4394 transitions. [2021-06-05 20:34:23,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 20:34:23,546 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:34:23,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:34:23,547 INFO L225 Difference]: With dead ends: 1583 [2021-06-05 20:34:23,548 INFO L226 Difference]: Without dead ends: 1498 [2021-06-05 20:34:23,548 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 47.6ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:23,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1498 states. [2021-06-05 20:34:23,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1498 to 1378. [2021-06-05 20:34:23,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1378 states, 1377 states have (on average 2.8249818445896877) internal successors, (3890), 1377 states have internal predecessors, (3890), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:23,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1378 states to 1378 states and 3890 transitions. [2021-06-05 20:34:23,561 INFO L78 Accepts]: Start accepts. Automaton has 1378 states and 3890 transitions. Word has length 26 [2021-06-05 20:34:23,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:34:23,561 INFO L482 AbstractCegarLoop]: Abstraction has 1378 states and 3890 transitions. [2021-06-05 20:34:23,561 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:23,561 INFO L276 IsEmpty]: Start isEmpty. Operand 1378 states and 3890 transitions. [2021-06-05 20:34:23,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:34:23,562 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:34:23,562 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:34:23,562 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable183 [2021-06-05 20:34:23,562 INFO L430 AbstractCegarLoop]: === Iteration 185 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:34:23,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:34:23,562 INFO L82 PathProgramCache]: Analyzing trace with hash -309352716, now seen corresponding path program 183 times [2021-06-05 20:34:23,562 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:34:23,563 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1696096395] [2021-06-05 20:34:23,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:34:23,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:34:23,617 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:34:23,617 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:34:23,617 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1696096395] [2021-06-05 20:34:23,617 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1696096395] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:34:23,617 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:34:23,617 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 20:34:23,618 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [575805850] [2021-06-05 20:34:23,618 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 20:34:23,618 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:34:23,618 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 20:34:23,618 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:23,618 INFO L87 Difference]: Start difference. First operand 1378 states and 3890 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:23,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:34:23,779 INFO L93 Difference]: Finished difference Result 1537 states and 4286 transitions. [2021-06-05 20:34:23,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 20:34:23,779 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:34:23,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:34:23,781 INFO L225 Difference]: With dead ends: 1537 [2021-06-05 20:34:23,781 INFO L226 Difference]: Without dead ends: 1442 [2021-06-05 20:34:23,781 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 47.8ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:23,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1442 states. [2021-06-05 20:34:23,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1442 to 1390. [2021-06-05 20:34:23,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1390 states, 1389 states have (on average 2.8192944564434845) internal successors, (3916), 1389 states have internal predecessors, (3916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:23,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1390 states to 1390 states and 3916 transitions. [2021-06-05 20:34:23,794 INFO L78 Accepts]: Start accepts. Automaton has 1390 states and 3916 transitions. Word has length 26 [2021-06-05 20:34:23,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:34:23,794 INFO L482 AbstractCegarLoop]: Abstraction has 1390 states and 3916 transitions. [2021-06-05 20:34:23,794 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:23,794 INFO L276 IsEmpty]: Start isEmpty. Operand 1390 states and 3916 transitions. [2021-06-05 20:34:23,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:34:23,796 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:34:23,796 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:34:23,796 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable184 [2021-06-05 20:34:23,796 INFO L430 AbstractCegarLoop]: === Iteration 186 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:34:23,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:34:23,796 INFO L82 PathProgramCache]: Analyzing trace with hash 1943506074, now seen corresponding path program 184 times [2021-06-05 20:34:23,796 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:34:23,796 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1929912296] [2021-06-05 20:34:23,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:34:23,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:34:23,849 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:34:23,849 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:34:23,849 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1929912296] [2021-06-05 20:34:23,849 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1929912296] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:34:23,849 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:34:23,849 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:34:23,849 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1277426502] [2021-06-05 20:34:23,849 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-05 20:34:23,849 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:34:23,850 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-05 20:34:23,850 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:34:23,850 INFO L87 Difference]: Start difference. First operand 1390 states and 3916 transitions. Second operand has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:23,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:34:23,981 INFO L93 Difference]: Finished difference Result 1645 states and 4600 transitions. [2021-06-05 20:34:23,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-05 20:34:23,981 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:34:23,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:34:23,982 INFO L225 Difference]: With dead ends: 1645 [2021-06-05 20:34:23,983 INFO L226 Difference]: Without dead ends: 1562 [2021-06-05 20:34:23,983 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 46.0ms TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:34:23,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1562 states. [2021-06-05 20:34:23,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1562 to 1396. [2021-06-05 20:34:23,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1396 states, 1395 states have (on average 2.813620071684588) internal successors, (3925), 1395 states have internal predecessors, (3925), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:23,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1396 states to 1396 states and 3925 transitions. [2021-06-05 20:34:23,996 INFO L78 Accepts]: Start accepts. Automaton has 1396 states and 3925 transitions. Word has length 26 [2021-06-05 20:34:23,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:34:23,997 INFO L482 AbstractCegarLoop]: Abstraction has 1396 states and 3925 transitions. [2021-06-05 20:34:23,997 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:23,997 INFO L276 IsEmpty]: Start isEmpty. Operand 1396 states and 3925 transitions. [2021-06-05 20:34:23,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:34:23,998 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:34:23,998 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:34:23,998 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable185 [2021-06-05 20:34:23,998 INFO L430 AbstractCegarLoop]: === Iteration 187 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:34:23,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:34:23,998 INFO L82 PathProgramCache]: Analyzing trace with hash -1764910374, now seen corresponding path program 185 times [2021-06-05 20:34:23,998 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:34:23,998 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1367259504] [2021-06-05 20:34:23,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:34:24,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:34:24,053 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:34:24,053 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:34:24,053 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1367259504] [2021-06-05 20:34:24,053 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1367259504] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:34:24,053 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:34:24,053 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 20:34:24,053 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063802375] [2021-06-05 20:34:24,054 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 20:34:24,054 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:34:24,054 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 20:34:24,054 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:24,054 INFO L87 Difference]: Start difference. First operand 1396 states and 3925 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:24,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:34:24,215 INFO L93 Difference]: Finished difference Result 1543 states and 4300 transitions. [2021-06-05 20:34:24,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 20:34:24,215 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:34:24,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:34:24,216 INFO L225 Difference]: With dead ends: 1543 [2021-06-05 20:34:24,217 INFO L226 Difference]: Without dead ends: 1455 [2021-06-05 20:34:24,217 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 47.8ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:24,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1455 states. [2021-06-05 20:34:24,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1455 to 1392. [2021-06-05 20:34:24,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1392 states, 1391 states have (on average 2.8173975557153126) internal successors, (3919), 1391 states have internal predecessors, (3919), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:24,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1392 states to 1392 states and 3919 transitions. [2021-06-05 20:34:24,230 INFO L78 Accepts]: Start accepts. Automaton has 1392 states and 3919 transitions. Word has length 26 [2021-06-05 20:34:24,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:34:24,230 INFO L482 AbstractCegarLoop]: Abstraction has 1392 states and 3919 transitions. [2021-06-05 20:34:24,230 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:24,230 INFO L276 IsEmpty]: Start isEmpty. Operand 1392 states and 3919 transitions. [2021-06-05 20:34:24,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:34:24,232 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:34:24,232 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:34:24,232 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable186 [2021-06-05 20:34:24,232 INFO L430 AbstractCegarLoop]: === Iteration 188 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:34:24,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:34:24,232 INFO L82 PathProgramCache]: Analyzing trace with hash 1817989080, now seen corresponding path program 186 times [2021-06-05 20:34:24,232 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:34:24,232 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1630628492] [2021-06-05 20:34:24,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:34:24,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:34:24,287 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:34:24,287 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:34:24,287 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1630628492] [2021-06-05 20:34:24,287 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1630628492] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:34:24,287 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:34:24,287 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 20:34:24,287 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2116211347] [2021-06-05 20:34:24,287 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 20:34:24,287 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:34:24,287 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 20:34:24,287 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:24,287 INFO L87 Difference]: Start difference. First operand 1392 states and 3919 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:24,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:34:24,456 INFO L93 Difference]: Finished difference Result 1684 states and 4690 transitions. [2021-06-05 20:34:24,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 20:34:24,457 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:34:24,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:34:24,458 INFO L225 Difference]: With dead ends: 1684 [2021-06-05 20:34:24,458 INFO L226 Difference]: Without dead ends: 1596 [2021-06-05 20:34:24,458 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 47.8ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:24,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1596 states. [2021-06-05 20:34:24,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1596 to 1416. [2021-06-05 20:34:24,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1416 states, 1415 states have (on average 2.8197879858657244) internal successors, (3990), 1415 states have internal predecessors, (3990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:24,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1416 states to 1416 states and 3990 transitions. [2021-06-05 20:34:24,472 INFO L78 Accepts]: Start accepts. Automaton has 1416 states and 3990 transitions. Word has length 26 [2021-06-05 20:34:24,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:34:24,472 INFO L482 AbstractCegarLoop]: Abstraction has 1416 states and 3990 transitions. [2021-06-05 20:34:24,472 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:24,472 INFO L276 IsEmpty]: Start isEmpty. Operand 1416 states and 3990 transitions. [2021-06-05 20:34:24,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:34:24,473 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:34:24,473 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:34:24,473 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable187 [2021-06-05 20:34:24,474 INFO L430 AbstractCegarLoop]: === Iteration 189 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:34:24,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:34:24,474 INFO L82 PathProgramCache]: Analyzing trace with hash 854757070, now seen corresponding path program 187 times [2021-06-05 20:34:24,474 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:34:24,474 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [571240336] [2021-06-05 20:34:24,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:34:24,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:34:24,522 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:34:24,522 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:34:24,522 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [571240336] [2021-06-05 20:34:24,522 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [571240336] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:34:24,522 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:34:24,522 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:34:24,522 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1039314220] [2021-06-05 20:34:24,522 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-05 20:34:24,523 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:34:24,523 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-05 20:34:24,523 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:34:24,523 INFO L87 Difference]: Start difference. First operand 1416 states and 3990 transitions. Second operand has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:24,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:34:24,650 INFO L93 Difference]: Finished difference Result 1704 states and 4749 transitions. [2021-06-05 20:34:24,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-05 20:34:24,650 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:34:24,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:34:24,652 INFO L225 Difference]: With dead ends: 1704 [2021-06-05 20:34:24,652 INFO L226 Difference]: Without dead ends: 1544 [2021-06-05 20:34:24,652 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 38.5ms TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:34:24,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1544 states. [2021-06-05 20:34:24,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1544 to 1404. [2021-06-05 20:34:24,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1404 states, 1403 states have (on average 2.819672131147541) internal successors, (3956), 1403 states have internal predecessors, (3956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:24,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1404 states to 1404 states and 3956 transitions. [2021-06-05 20:34:24,666 INFO L78 Accepts]: Start accepts. Automaton has 1404 states and 3956 transitions. Word has length 26 [2021-06-05 20:34:24,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:34:24,666 INFO L482 AbstractCegarLoop]: Abstraction has 1404 states and 3956 transitions. [2021-06-05 20:34:24,666 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:24,666 INFO L276 IsEmpty]: Start isEmpty. Operand 1404 states and 3956 transitions. [2021-06-05 20:34:24,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:34:24,667 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:34:24,667 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:34:24,667 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable188 [2021-06-05 20:34:24,667 INFO L430 AbstractCegarLoop]: === Iteration 190 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:34:24,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:34:24,667 INFO L82 PathProgramCache]: Analyzing trace with hash -724674576, now seen corresponding path program 188 times [2021-06-05 20:34:24,668 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:34:24,668 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1517216638] [2021-06-05 20:34:24,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:34:24,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:34:24,730 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:34:24,731 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:34:24,731 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1517216638] [2021-06-05 20:34:24,731 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1517216638] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:34:24,731 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:34:24,731 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 20:34:24,731 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1917705244] [2021-06-05 20:34:24,731 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 20:34:24,731 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:34:24,731 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 20:34:24,731 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:24,731 INFO L87 Difference]: Start difference. First operand 1404 states and 3956 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:24,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:34:24,895 INFO L93 Difference]: Finished difference Result 1611 states and 4453 transitions. [2021-06-05 20:34:24,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 20:34:24,895 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:34:24,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:34:24,897 INFO L225 Difference]: With dead ends: 1611 [2021-06-05 20:34:24,897 INFO L226 Difference]: Without dead ends: 1492 [2021-06-05 20:34:24,897 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 46.9ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:24,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1492 states. [2021-06-05 20:34:24,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1492 to 1394. [2021-06-05 20:34:24,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1394 states, 1393 states have (on average 2.8241206030150754) internal successors, (3934), 1393 states have internal predecessors, (3934), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:24,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1394 states to 1394 states and 3934 transitions. [2021-06-05 20:34:24,911 INFO L78 Accepts]: Start accepts. Automaton has 1394 states and 3934 transitions. Word has length 26 [2021-06-05 20:34:24,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:34:24,911 INFO L482 AbstractCegarLoop]: Abstraction has 1394 states and 3934 transitions. [2021-06-05 20:34:24,911 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:24,911 INFO L276 IsEmpty]: Start isEmpty. Operand 1394 states and 3934 transitions. [2021-06-05 20:34:24,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:34:24,912 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:34:24,912 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:34:24,912 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable189 [2021-06-05 20:34:24,912 INFO L430 AbstractCegarLoop]: === Iteration 191 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:34:24,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:34:24,913 INFO L82 PathProgramCache]: Analyzing trace with hash -903833710, now seen corresponding path program 189 times [2021-06-05 20:34:24,913 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:34:24,913 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [783820425] [2021-06-05 20:34:24,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:34:24,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:34:24,979 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:34:24,979 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:34:24,979 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [783820425] [2021-06-05 20:34:24,979 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [783820425] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:34:24,979 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:34:24,979 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 20:34:24,979 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [102957504] [2021-06-05 20:34:24,979 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 20:34:24,979 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:34:24,980 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 20:34:24,980 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:24,980 INFO L87 Difference]: Start difference. First operand 1394 states and 3934 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:25,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:34:25,146 INFO L93 Difference]: Finished difference Result 1557 states and 4341 transitions. [2021-06-05 20:34:25,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 20:34:25,146 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:34:25,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:34:25,147 INFO L225 Difference]: With dead ends: 1557 [2021-06-05 20:34:25,147 INFO L226 Difference]: Without dead ends: 1472 [2021-06-05 20:34:25,148 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 55.0ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:25,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1472 states. [2021-06-05 20:34:25,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1472 to 1396. [2021-06-05 20:34:25,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1396 states, 1395 states have (on average 2.825806451612903) internal successors, (3942), 1395 states have internal predecessors, (3942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:25,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1396 states to 1396 states and 3942 transitions. [2021-06-05 20:34:25,161 INFO L78 Accepts]: Start accepts. Automaton has 1396 states and 3942 transitions. Word has length 26 [2021-06-05 20:34:25,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:34:25,162 INFO L482 AbstractCegarLoop]: Abstraction has 1396 states and 3942 transitions. [2021-06-05 20:34:25,162 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:25,162 INFO L276 IsEmpty]: Start isEmpty. Operand 1396 states and 3942 transitions. [2021-06-05 20:34:25,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:34:25,163 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:34:25,163 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:34:25,163 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable190 [2021-06-05 20:34:25,163 INFO L430 AbstractCegarLoop]: === Iteration 192 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:34:25,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:34:25,163 INFO L82 PathProgramCache]: Analyzing trace with hash -34389102, now seen corresponding path program 190 times [2021-06-05 20:34:25,163 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:34:25,163 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2024548470] [2021-06-05 20:34:25,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:34:25,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:34:25,223 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:34:25,223 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:34:25,223 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2024548470] [2021-06-05 20:34:25,224 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2024548470] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:34:25,224 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:34:25,224 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 20:34:25,224 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [812675546] [2021-06-05 20:34:25,224 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 20:34:25,224 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:34:25,225 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 20:34:25,225 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:25,225 INFO L87 Difference]: Start difference. First operand 1396 states and 3942 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:25,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:34:25,393 INFO L93 Difference]: Finished difference Result 1544 states and 4317 transitions. [2021-06-05 20:34:25,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 20:34:25,393 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:34:25,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:34:25,394 INFO L225 Difference]: With dead ends: 1544 [2021-06-05 20:34:25,394 INFO L226 Difference]: Without dead ends: 1449 [2021-06-05 20:34:25,395 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 48.8ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:25,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1449 states. [2021-06-05 20:34:25,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1449 to 1400. [2021-06-05 20:34:25,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1400 states, 1399 states have (on average 2.827019299499643) internal successors, (3955), 1399 states have internal predecessors, (3955), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:25,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1400 states to 1400 states and 3955 transitions. [2021-06-05 20:34:25,408 INFO L78 Accepts]: Start accepts. Automaton has 1400 states and 3955 transitions. Word has length 26 [2021-06-05 20:34:25,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:34:25,408 INFO L482 AbstractCegarLoop]: Abstraction has 1400 states and 3955 transitions. [2021-06-05 20:34:25,408 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:25,408 INFO L276 IsEmpty]: Start isEmpty. Operand 1400 states and 3955 transitions. [2021-06-05 20:34:25,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:34:25,409 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:34:25,409 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:34:25,410 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable191 [2021-06-05 20:34:25,410 INFO L430 AbstractCegarLoop]: === Iteration 193 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:34:25,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:34:25,410 INFO L82 PathProgramCache]: Analyzing trace with hash -1503100332, now seen corresponding path program 191 times [2021-06-05 20:34:25,410 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:34:25,410 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [887924608] [2021-06-05 20:34:25,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:34:25,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:34:25,466 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:34:25,466 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:34:25,466 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [887924608] [2021-06-05 20:34:25,466 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [887924608] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:34:25,466 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:34:25,466 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 20:34:25,466 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [496658867] [2021-06-05 20:34:25,466 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 20:34:25,466 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:34:25,466 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 20:34:25,466 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:25,467 INFO L87 Difference]: Start difference. First operand 1400 states and 3955 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:25,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:34:25,631 INFO L93 Difference]: Finished difference Result 1551 states and 4333 transitions. [2021-06-05 20:34:25,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 20:34:25,632 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:34:25,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:34:25,633 INFO L225 Difference]: With dead ends: 1551 [2021-06-05 20:34:25,633 INFO L226 Difference]: Without dead ends: 1466 [2021-06-05 20:34:25,633 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 48.8ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:25,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1466 states. [2021-06-05 20:34:25,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1466 to 1398. [2021-06-05 20:34:25,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1398 states, 1397 states have (on average 2.82605583392985) internal successors, (3948), 1397 states have internal predecessors, (3948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:25,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1398 states to 1398 states and 3948 transitions. [2021-06-05 20:34:25,647 INFO L78 Accepts]: Start accepts. Automaton has 1398 states and 3948 transitions. Word has length 26 [2021-06-05 20:34:25,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:34:25,647 INFO L482 AbstractCegarLoop]: Abstraction has 1398 states and 3948 transitions. [2021-06-05 20:34:25,647 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:25,647 INFO L276 IsEmpty]: Start isEmpty. Operand 1398 states and 3948 transitions. [2021-06-05 20:34:25,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:34:25,649 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:34:25,649 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:34:25,649 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable192 [2021-06-05 20:34:25,649 INFO L430 AbstractCegarLoop]: === Iteration 194 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:34:25,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:34:25,649 INFO L82 PathProgramCache]: Analyzing trace with hash -2076497608, now seen corresponding path program 192 times [2021-06-05 20:34:25,649 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:34:25,649 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1226281038] [2021-06-05 20:34:25,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:34:25,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:34:25,716 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:34:25,716 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:34:25,716 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1226281038] [2021-06-05 20:34:25,716 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1226281038] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:34:25,716 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:34:25,716 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 20:34:25,716 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1997270392] [2021-06-05 20:34:25,716 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 20:34:25,716 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:34:25,717 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 20:34:25,717 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:25,717 INFO L87 Difference]: Start difference. First operand 1398 states and 3948 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:25,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:34:25,887 INFO L93 Difference]: Finished difference Result 1561 states and 4348 transitions. [2021-06-05 20:34:25,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 20:34:25,888 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:34:25,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:34:25,889 INFO L225 Difference]: With dead ends: 1561 [2021-06-05 20:34:25,889 INFO L226 Difference]: Without dead ends: 1478 [2021-06-05 20:34:25,889 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 50.4ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:25,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1478 states. [2021-06-05 20:34:25,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1478 to 1398. [2021-06-05 20:34:25,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1398 states, 1397 states have (on average 2.8246241947029347) internal successors, (3946), 1397 states have internal predecessors, (3946), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:25,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1398 states to 1398 states and 3946 transitions. [2021-06-05 20:34:25,911 INFO L78 Accepts]: Start accepts. Automaton has 1398 states and 3946 transitions. Word has length 26 [2021-06-05 20:34:25,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:34:25,911 INFO L482 AbstractCegarLoop]: Abstraction has 1398 states and 3946 transitions. [2021-06-05 20:34:25,911 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:25,911 INFO L276 IsEmpty]: Start isEmpty. Operand 1398 states and 3946 transitions. [2021-06-05 20:34:25,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:34:25,912 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:34:25,912 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:34:25,912 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable193 [2021-06-05 20:34:25,912 INFO L430 AbstractCegarLoop]: === Iteration 195 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:34:25,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:34:25,913 INFO L82 PathProgramCache]: Analyzing trace with hash -1489946760, now seen corresponding path program 193 times [2021-06-05 20:34:25,913 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:34:25,913 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [719232779] [2021-06-05 20:34:25,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:34:25,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:34:25,969 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:34:25,969 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:34:25,970 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [719232779] [2021-06-05 20:34:25,970 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [719232779] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:34:25,970 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:34:25,970 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 20:34:25,970 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [522258329] [2021-06-05 20:34:25,970 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 20:34:25,970 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:34:25,970 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 20:34:25,970 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:25,970 INFO L87 Difference]: Start difference. First operand 1398 states and 3946 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:26,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:34:26,141 INFO L93 Difference]: Finished difference Result 1541 states and 4312 transitions. [2021-06-05 20:34:26,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 20:34:26,141 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:34:26,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:34:26,143 INFO L225 Difference]: With dead ends: 1541 [2021-06-05 20:34:26,143 INFO L226 Difference]: Without dead ends: 1453 [2021-06-05 20:34:26,143 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 48.6ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:26,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1453 states. [2021-06-05 20:34:26,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1453 to 1399. [2021-06-05 20:34:26,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1399 states, 1398 states have (on average 2.8254649499284694) internal successors, (3950), 1398 states have internal predecessors, (3950), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:26,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1399 states to 1399 states and 3950 transitions. [2021-06-05 20:34:26,156 INFO L78 Accepts]: Start accepts. Automaton has 1399 states and 3950 transitions. Word has length 26 [2021-06-05 20:34:26,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:34:26,156 INFO L482 AbstractCegarLoop]: Abstraction has 1399 states and 3950 transitions. [2021-06-05 20:34:26,156 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:26,156 INFO L276 IsEmpty]: Start isEmpty. Operand 1399 states and 3950 transitions. [2021-06-05 20:34:26,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:34:26,158 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:34:26,158 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:34:26,158 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable194 [2021-06-05 20:34:26,158 INFO L430 AbstractCegarLoop]: === Iteration 196 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:34:26,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:34:26,158 INFO L82 PathProgramCache]: Analyzing trace with hash 2092952694, now seen corresponding path program 194 times [2021-06-05 20:34:26,158 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:34:26,158 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [525151707] [2021-06-05 20:34:26,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:34:26,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:34:26,214 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:34:26,214 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:34:26,214 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [525151707] [2021-06-05 20:34:26,214 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [525151707] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:34:26,214 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:34:26,214 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 20:34:26,214 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1096661970] [2021-06-05 20:34:26,214 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 20:34:26,214 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:34:26,214 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 20:34:26,214 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:26,214 INFO L87 Difference]: Start difference. First operand 1399 states and 3950 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:26,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:34:26,385 INFO L93 Difference]: Finished difference Result 1549 states and 4315 transitions. [2021-06-05 20:34:26,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 20:34:26,385 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:34:26,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:34:26,387 INFO L225 Difference]: With dead ends: 1549 [2021-06-05 20:34:26,387 INFO L226 Difference]: Without dead ends: 1461 [2021-06-05 20:34:26,387 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 48.7ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:26,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1461 states. [2021-06-05 20:34:26,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1461 to 1400. [2021-06-05 20:34:26,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1400 states, 1399 states have (on average 2.827019299499643) internal successors, (3955), 1399 states have internal predecessors, (3955), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:26,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1400 states to 1400 states and 3955 transitions. [2021-06-05 20:34:26,401 INFO L78 Accepts]: Start accepts. Automaton has 1400 states and 3955 transitions. Word has length 26 [2021-06-05 20:34:26,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:34:26,401 INFO L482 AbstractCegarLoop]: Abstraction has 1400 states and 3955 transitions. [2021-06-05 20:34:26,401 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:26,401 INFO L276 IsEmpty]: Start isEmpty. Operand 1400 states and 3955 transitions. [2021-06-05 20:34:26,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:34:26,402 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:34:26,402 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:34:26,402 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable195 [2021-06-05 20:34:26,402 INFO L430 AbstractCegarLoop]: === Iteration 197 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:34:26,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:34:26,402 INFO L82 PathProgramCache]: Analyzing trace with hash -1110641676, now seen corresponding path program 195 times [2021-06-05 20:34:26,402 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:34:26,402 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [548394875] [2021-06-05 20:34:26,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:34:26,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:34:26,460 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:34:26,461 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:34:26,461 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [548394875] [2021-06-05 20:34:26,461 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [548394875] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:34:26,461 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:34:26,461 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 20:34:26,461 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1365492013] [2021-06-05 20:34:26,461 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 20:34:26,461 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:34:26,461 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 20:34:26,461 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:26,461 INFO L87 Difference]: Start difference. First operand 1400 states and 3955 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:26,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:34:26,626 INFO L93 Difference]: Finished difference Result 1607 states and 4488 transitions. [2021-06-05 20:34:26,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 20:34:26,626 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:34:26,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:34:26,628 INFO L225 Difference]: With dead ends: 1607 [2021-06-05 20:34:26,628 INFO L226 Difference]: Without dead ends: 1522 [2021-06-05 20:34:26,628 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 50.1ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:26,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1522 states. [2021-06-05 20:34:26,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1522 to 1400. [2021-06-05 20:34:26,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1400 states, 1399 states have (on average 2.827019299499643) internal successors, (3955), 1399 states have internal predecessors, (3955), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:26,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1400 states to 1400 states and 3955 transitions. [2021-06-05 20:34:26,642 INFO L78 Accepts]: Start accepts. Automaton has 1400 states and 3955 transitions. Word has length 26 [2021-06-05 20:34:26,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:34:26,642 INFO L482 AbstractCegarLoop]: Abstraction has 1400 states and 3955 transitions. [2021-06-05 20:34:26,642 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:26,642 INFO L276 IsEmpty]: Start isEmpty. Operand 1400 states and 3955 transitions. [2021-06-05 20:34:26,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:34:26,643 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:34:26,643 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:34:26,643 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable196 [2021-06-05 20:34:26,643 INFO L430 AbstractCegarLoop]: === Iteration 198 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:34:26,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:34:26,643 INFO L82 PathProgramCache]: Analyzing trace with hash -241197068, now seen corresponding path program 196 times [2021-06-05 20:34:26,643 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:34:26,643 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [204809448] [2021-06-05 20:34:26,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:34:26,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:34:26,700 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:34:26,700 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:34:26,700 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [204809448] [2021-06-05 20:34:26,700 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [204809448] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:34:26,700 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:34:26,700 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 20:34:26,700 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [422708282] [2021-06-05 20:34:26,700 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 20:34:26,700 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:34:26,700 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 20:34:26,700 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:26,700 INFO L87 Difference]: Start difference. First operand 1400 states and 3955 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:26,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:34:26,866 INFO L93 Difference]: Finished difference Result 1617 states and 4532 transitions. [2021-06-05 20:34:26,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 20:34:26,867 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:34:26,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:34:26,868 INFO L225 Difference]: With dead ends: 1617 [2021-06-05 20:34:26,868 INFO L226 Difference]: Without dead ends: 1522 [2021-06-05 20:34:26,868 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 49.2ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:26,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1522 states. [2021-06-05 20:34:26,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1522 to 1407. [2021-06-05 20:34:26,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1407 states, 1406 states have (on average 2.8250355618776672) internal successors, (3972), 1406 states have internal predecessors, (3972), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:26,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1407 states to 1407 states and 3972 transitions. [2021-06-05 20:34:26,882 INFO L78 Accepts]: Start accepts. Automaton has 1407 states and 3972 transitions. Word has length 26 [2021-06-05 20:34:26,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:34:26,882 INFO L482 AbstractCegarLoop]: Abstraction has 1407 states and 3972 transitions. [2021-06-05 20:34:26,882 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:26,882 INFO L276 IsEmpty]: Start isEmpty. Operand 1407 states and 3972 transitions. [2021-06-05 20:34:26,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:34:26,884 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:34:26,884 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:34:26,884 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable197 [2021-06-05 20:34:26,884 INFO L430 AbstractCegarLoop]: === Iteration 199 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:34:26,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:34:26,884 INFO L82 PathProgramCache]: Analyzing trace with hash -495542802, now seen corresponding path program 197 times [2021-06-05 20:34:26,884 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:34:26,884 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [915023363] [2021-06-05 20:34:26,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:34:26,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:34:26,941 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:34:26,941 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:34:26,941 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [915023363] [2021-06-05 20:34:26,941 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [915023363] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:34:26,941 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:34:26,941 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 20:34:26,941 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1052151909] [2021-06-05 20:34:26,941 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 20:34:26,941 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:34:26,941 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 20:34:26,941 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:26,942 INFO L87 Difference]: Start difference. First operand 1407 states and 3972 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:27,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:34:27,113 INFO L93 Difference]: Finished difference Result 1602 states and 4492 transitions. [2021-06-05 20:34:27,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 20:34:27,114 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:34:27,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:34:27,115 INFO L225 Difference]: With dead ends: 1602 [2021-06-05 20:34:27,115 INFO L226 Difference]: Without dead ends: 1502 [2021-06-05 20:34:27,115 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 49.1ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:27,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1502 states. [2021-06-05 20:34:27,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1502 to 1405. [2021-06-05 20:34:27,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1405 states, 1404 states have (on average 2.826923076923077) internal successors, (3969), 1404 states have internal predecessors, (3969), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:27,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1405 states to 1405 states and 3969 transitions. [2021-06-05 20:34:27,129 INFO L78 Accepts]: Start accepts. Automaton has 1405 states and 3969 transitions. Word has length 26 [2021-06-05 20:34:27,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:34:27,129 INFO L482 AbstractCegarLoop]: Abstraction has 1405 states and 3969 transitions. [2021-06-05 20:34:27,129 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:27,129 INFO L276 IsEmpty]: Start isEmpty. Operand 1405 states and 3969 transitions. [2021-06-05 20:34:27,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:34:27,130 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:34:27,130 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:34:27,130 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable198 [2021-06-05 20:34:27,130 INFO L430 AbstractCegarLoop]: === Iteration 200 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:34:27,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:34:27,130 INFO L82 PathProgramCache]: Analyzing trace with hash -1813146598, now seen corresponding path program 198 times [2021-06-05 20:34:27,130 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:34:27,130 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [494945929] [2021-06-05 20:34:27,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:34:27,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:34:27,179 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:34:27,179 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:34:27,179 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [494945929] [2021-06-05 20:34:27,179 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [494945929] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:34:27,180 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:34:27,180 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:34:27,180 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [105631629] [2021-06-05 20:34:27,180 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-05 20:34:27,180 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:34:27,180 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-05 20:34:27,180 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:34:27,180 INFO L87 Difference]: Start difference. First operand 1405 states and 3969 transitions. Second operand has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:27,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:34:27,313 INFO L93 Difference]: Finished difference Result 1611 states and 4507 transitions. [2021-06-05 20:34:27,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-05 20:34:27,314 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:34:27,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:34:27,315 INFO L225 Difference]: With dead ends: 1611 [2021-06-05 20:34:27,315 INFO L226 Difference]: Without dead ends: 1524 [2021-06-05 20:34:27,315 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 39.7ms TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:34:27,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1524 states. [2021-06-05 20:34:27,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1524 to 1406. [2021-06-05 20:34:27,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1406 states, 1405 states have (on average 2.8270462633451956) internal successors, (3972), 1405 states have internal predecessors, (3972), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:27,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1406 states to 1406 states and 3972 transitions. [2021-06-05 20:34:27,329 INFO L78 Accepts]: Start accepts. Automaton has 1406 states and 3972 transitions. Word has length 26 [2021-06-05 20:34:27,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:34:27,329 INFO L482 AbstractCegarLoop]: Abstraction has 1406 states and 3972 transitions. [2021-06-05 20:34:27,329 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:27,329 INFO L276 IsEmpty]: Start isEmpty. Operand 1406 states and 3972 transitions. [2021-06-05 20:34:27,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:34:27,330 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:34:27,330 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:34:27,330 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable199 [2021-06-05 20:34:27,330 INFO L430 AbstractCegarLoop]: === Iteration 201 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:34:27,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:34:27,331 INFO L82 PathProgramCache]: Analyzing trace with hash 1741697498, now seen corresponding path program 199 times [2021-06-05 20:34:27,331 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:34:27,331 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1474454208] [2021-06-05 20:34:27,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:34:27,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:34:27,400 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:34:27,400 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:34:27,400 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1474454208] [2021-06-05 20:34:27,401 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1474454208] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:34:27,401 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:34:27,401 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 20:34:27,401 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1419485967] [2021-06-05 20:34:27,401 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 20:34:27,401 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:34:27,401 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 20:34:27,401 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:27,401 INFO L87 Difference]: Start difference. First operand 1406 states and 3972 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:27,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:34:27,570 INFO L93 Difference]: Finished difference Result 1550 states and 4346 transitions. [2021-06-05 20:34:27,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 20:34:27,571 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:34:27,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:34:27,572 INFO L225 Difference]: With dead ends: 1550 [2021-06-05 20:34:27,572 INFO L226 Difference]: Without dead ends: 1462 [2021-06-05 20:34:27,572 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 62.6ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:27,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1462 states. [2021-06-05 20:34:27,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1462 to 1408. [2021-06-05 20:34:27,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1408 states, 1407 states have (on average 2.8280028429282162) internal successors, (3979), 1407 states have internal predecessors, (3979), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:27,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1408 states to 1408 states and 3979 transitions. [2021-06-05 20:34:27,586 INFO L78 Accepts]: Start accepts. Automaton has 1408 states and 3979 transitions. Word has length 26 [2021-06-05 20:34:27,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:34:27,586 INFO L482 AbstractCegarLoop]: Abstraction has 1408 states and 3979 transitions. [2021-06-05 20:34:27,586 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:27,586 INFO L276 IsEmpty]: Start isEmpty. Operand 1408 states and 3979 transitions. [2021-06-05 20:34:27,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:34:27,587 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:34:27,587 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:34:27,587 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable200 [2021-06-05 20:34:27,588 INFO L430 AbstractCegarLoop]: === Iteration 202 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:34:27,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:34:27,588 INFO L82 PathProgramCache]: Analyzing trace with hash 1029629656, now seen corresponding path program 200 times [2021-06-05 20:34:27,588 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:34:27,588 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [733354511] [2021-06-05 20:34:27,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:34:27,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:34:27,645 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:34:27,645 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:34:27,645 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [733354511] [2021-06-05 20:34:27,645 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [733354511] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:34:27,645 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:34:27,645 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 20:34:27,645 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [984951998] [2021-06-05 20:34:27,645 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 20:34:27,645 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:34:27,646 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 20:34:27,646 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:27,646 INFO L87 Difference]: Start difference. First operand 1408 states and 3979 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:27,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:34:27,813 INFO L93 Difference]: Finished difference Result 1554 states and 4338 transitions. [2021-06-05 20:34:27,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 20:34:27,813 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:34:27,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:34:27,814 INFO L225 Difference]: With dead ends: 1554 [2021-06-05 20:34:27,814 INFO L226 Difference]: Without dead ends: 1468 [2021-06-05 20:34:27,814 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 49.1ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:27,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1468 states. [2021-06-05 20:34:27,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1468 to 1407. [2021-06-05 20:34:27,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1407 states, 1406 states have (on average 2.8250355618776672) internal successors, (3972), 1406 states have internal predecessors, (3972), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:27,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1407 states to 1407 states and 3972 transitions. [2021-06-05 20:34:27,828 INFO L78 Accepts]: Start accepts. Automaton has 1407 states and 3972 transitions. Word has length 26 [2021-06-05 20:34:27,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:34:27,828 INFO L482 AbstractCegarLoop]: Abstraction has 1407 states and 3972 transitions. [2021-06-05 20:34:27,828 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:27,828 INFO L276 IsEmpty]: Start isEmpty. Operand 1407 states and 3972 transitions. [2021-06-05 20:34:27,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:34:27,829 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:34:27,829 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:34:27,829 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable201 [2021-06-05 20:34:27,829 INFO L430 AbstractCegarLoop]: === Iteration 203 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:34:27,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:34:27,830 INFO L82 PathProgramCache]: Analyzing trace with hash 349552952, now seen corresponding path program 201 times [2021-06-05 20:34:27,830 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:34:27,830 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [627552100] [2021-06-05 20:34:27,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:34:27,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:34:27,888 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:34:27,888 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:34:27,888 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [627552100] [2021-06-05 20:34:27,889 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [627552100] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:34:27,889 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:34:27,889 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 20:34:27,889 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [62089729] [2021-06-05 20:34:27,889 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 20:34:27,889 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:34:27,889 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 20:34:27,889 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:27,889 INFO L87 Difference]: Start difference. First operand 1407 states and 3972 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:28,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:34:28,061 INFO L93 Difference]: Finished difference Result 1620 states and 4536 transitions. [2021-06-05 20:34:28,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 20:34:28,061 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:34:28,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:34:28,063 INFO L225 Difference]: With dead ends: 1620 [2021-06-05 20:34:28,063 INFO L226 Difference]: Without dead ends: 1523 [2021-06-05 20:34:28,063 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 50.8ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:28,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1523 states. [2021-06-05 20:34:28,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1523 to 1419. [2021-06-05 20:34:28,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1419 states, 1418 states have (on average 2.821579689703808) internal successors, (4001), 1418 states have internal predecessors, (4001), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:28,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1419 states to 1419 states and 4001 transitions. [2021-06-05 20:34:28,077 INFO L78 Accepts]: Start accepts. Automaton has 1419 states and 4001 transitions. Word has length 26 [2021-06-05 20:34:28,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:34:28,077 INFO L482 AbstractCegarLoop]: Abstraction has 1419 states and 4001 transitions. [2021-06-05 20:34:28,077 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:28,077 INFO L276 IsEmpty]: Start isEmpty. Operand 1419 states and 4001 transitions. [2021-06-05 20:34:28,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:34:28,078 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:34:28,078 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:34:28,078 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable202 [2021-06-05 20:34:28,078 INFO L430 AbstractCegarLoop]: === Iteration 204 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:34:28,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:34:28,078 INFO L82 PathProgramCache]: Analyzing trace with hash 939870006, now seen corresponding path program 202 times [2021-06-05 20:34:28,078 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:34:28,078 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [262182459] [2021-06-05 20:34:28,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:34:28,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:34:28,133 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:34:28,133 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:34:28,133 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [262182459] [2021-06-05 20:34:28,133 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [262182459] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:34:28,134 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:34:28,134 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 20:34:28,134 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1362716458] [2021-06-05 20:34:28,134 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 20:34:28,134 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:34:28,134 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 20:34:28,134 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:28,134 INFO L87 Difference]: Start difference. First operand 1419 states and 4001 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:28,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:34:28,296 INFO L93 Difference]: Finished difference Result 1652 states and 4605 transitions. [2021-06-05 20:34:28,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 20:34:28,297 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:34:28,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:34:28,298 INFO L225 Difference]: With dead ends: 1652 [2021-06-05 20:34:28,298 INFO L226 Difference]: Without dead ends: 1563 [2021-06-05 20:34:28,298 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 47.8ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:28,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1563 states. [2021-06-05 20:34:28,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1563 to 1418. [2021-06-05 20:34:28,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1418 states, 1417 states have (on average 2.8228652081863093) internal successors, (4000), 1417 states have internal predecessors, (4000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:28,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1418 states to 1418 states and 4000 transitions. [2021-06-05 20:34:28,313 INFO L78 Accepts]: Start accepts. Automaton has 1418 states and 4000 transitions. Word has length 26 [2021-06-05 20:34:28,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:34:28,313 INFO L482 AbstractCegarLoop]: Abstraction has 1418 states and 4000 transitions. [2021-06-05 20:34:28,313 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:28,313 INFO L276 IsEmpty]: Start isEmpty. Operand 1418 states and 4000 transitions. [2021-06-05 20:34:28,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:34:28,314 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:34:28,314 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:34:28,314 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable203 [2021-06-05 20:34:28,314 INFO L430 AbstractCegarLoop]: === Iteration 205 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:34:28,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:34:28,314 INFO L82 PathProgramCache]: Analyzing trace with hash -2043486036, now seen corresponding path program 203 times [2021-06-05 20:34:28,314 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:34:28,314 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [373252763] [2021-06-05 20:34:28,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:34:28,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:34:28,360 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:34:28,360 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:34:28,360 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [373252763] [2021-06-05 20:34:28,360 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [373252763] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:34:28,360 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:34:28,360 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:34:28,360 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [927329881] [2021-06-05 20:34:28,360 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-05 20:34:28,360 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:34:28,361 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-05 20:34:28,361 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:34:28,361 INFO L87 Difference]: Start difference. First operand 1418 states and 4000 transitions. Second operand has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:28,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:34:28,487 INFO L93 Difference]: Finished difference Result 1692 states and 4710 transitions. [2021-06-05 20:34:28,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-05 20:34:28,487 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:34:28,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:34:28,488 INFO L225 Difference]: With dead ends: 1692 [2021-06-05 20:34:28,488 INFO L226 Difference]: Without dead ends: 1504 [2021-06-05 20:34:28,489 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 38.8ms TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:34:28,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1504 states. [2021-06-05 20:34:28,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1504 to 1400. [2021-06-05 20:34:28,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1400 states, 1399 states have (on average 2.802001429592566) internal successors, (3920), 1399 states have internal predecessors, (3920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:28,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1400 states to 1400 states and 3920 transitions. [2021-06-05 20:34:28,502 INFO L78 Accepts]: Start accepts. Automaton has 1400 states and 3920 transitions. Word has length 26 [2021-06-05 20:34:28,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:34:28,502 INFO L482 AbstractCegarLoop]: Abstraction has 1400 states and 3920 transitions. [2021-06-05 20:34:28,502 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:28,502 INFO L276 IsEmpty]: Start isEmpty. Operand 1400 states and 3920 transitions. [2021-06-05 20:34:28,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:34:28,503 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:34:28,503 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:34:28,503 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable204 [2021-06-05 20:34:28,503 INFO L430 AbstractCegarLoop]: === Iteration 206 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:34:28,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:34:28,504 INFO L82 PathProgramCache]: Analyzing trace with hash 672049614, now seen corresponding path program 204 times [2021-06-05 20:34:28,504 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:34:28,504 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [356470867] [2021-06-05 20:34:28,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:34:28,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:34:28,560 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:34:28,560 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:34:28,560 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [356470867] [2021-06-05 20:34:28,560 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [356470867] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:34:28,560 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:34:28,560 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 20:34:28,560 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [178930992] [2021-06-05 20:34:28,560 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 20:34:28,560 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:34:28,561 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 20:34:28,561 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:28,561 INFO L87 Difference]: Start difference. First operand 1400 states and 3920 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:28,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:34:28,718 INFO L93 Difference]: Finished difference Result 1597 states and 4423 transitions. [2021-06-05 20:34:28,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 20:34:28,718 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:34:28,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:34:28,719 INFO L225 Difference]: With dead ends: 1597 [2021-06-05 20:34:28,719 INFO L226 Difference]: Without dead ends: 1470 [2021-06-05 20:34:28,720 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 46.9ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:28,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1470 states. [2021-06-05 20:34:28,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1470 to 1368. [2021-06-05 20:34:28,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1368 states, 1367 states have (on average 2.8083394294074617) internal successors, (3839), 1367 states have internal predecessors, (3839), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:28,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1368 states to 1368 states and 3839 transitions. [2021-06-05 20:34:28,733 INFO L78 Accepts]: Start accepts. Automaton has 1368 states and 3839 transitions. Word has length 26 [2021-06-05 20:34:28,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:34:28,733 INFO L482 AbstractCegarLoop]: Abstraction has 1368 states and 3839 transitions. [2021-06-05 20:34:28,733 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:28,733 INFO L276 IsEmpty]: Start isEmpty. Operand 1368 states and 3839 transitions. [2021-06-05 20:34:28,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:34:28,734 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:34:28,734 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:34:28,734 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable205 [2021-06-05 20:34:28,734 INFO L430 AbstractCegarLoop]: === Iteration 207 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:34:28,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:34:28,734 INFO L82 PathProgramCache]: Analyzing trace with hash 680919408, now seen corresponding path program 205 times [2021-06-05 20:34:28,735 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:34:28,735 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [189139977] [2021-06-05 20:34:28,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:34:28,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:34:28,789 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:34:28,789 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:34:28,789 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [189139977] [2021-06-05 20:34:28,789 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [189139977] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:34:28,789 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:34:28,789 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 20:34:28,789 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1457112340] [2021-06-05 20:34:28,789 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 20:34:28,789 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:34:28,789 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 20:34:28,789 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:28,789 INFO L87 Difference]: Start difference. First operand 1368 states and 3839 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:28,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:34:28,948 INFO L93 Difference]: Finished difference Result 1512 states and 4214 transitions. [2021-06-05 20:34:28,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 20:34:28,948 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:34:28,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:34:28,949 INFO L225 Difference]: With dead ends: 1512 [2021-06-05 20:34:28,950 INFO L226 Difference]: Without dead ends: 1424 [2021-06-05 20:34:28,950 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 47.4ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:28,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1424 states. [2021-06-05 20:34:28,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1424 to 1371. [2021-06-05 20:34:28,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1371 states, 1370 states have (on average 2.808029197080292) internal successors, (3847), 1370 states have internal predecessors, (3847), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:28,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1371 states to 1371 states and 3847 transitions. [2021-06-05 20:34:28,963 INFO L78 Accepts]: Start accepts. Automaton has 1371 states and 3847 transitions. Word has length 26 [2021-06-05 20:34:28,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:34:28,963 INFO L482 AbstractCegarLoop]: Abstraction has 1371 states and 3847 transitions. [2021-06-05 20:34:28,963 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:28,963 INFO L276 IsEmpty]: Start isEmpty. Operand 1371 states and 3847 transitions. [2021-06-05 20:34:28,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:34:28,964 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:34:28,964 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:34:28,964 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable206 [2021-06-05 20:34:28,964 INFO L430 AbstractCegarLoop]: === Iteration 208 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:34:28,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:34:28,964 INFO L82 PathProgramCache]: Analyzing trace with hash -31148434, now seen corresponding path program 206 times [2021-06-05 20:34:28,964 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:34:28,964 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [598253312] [2021-06-05 20:34:28,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:34:28,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:34:29,023 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:34:29,024 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:34:29,024 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [598253312] [2021-06-05 20:34:29,024 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [598253312] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:34:29,024 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:34:29,024 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 20:34:29,024 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610532837] [2021-06-05 20:34:29,024 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 20:34:29,024 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:34:29,024 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 20:34:29,024 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:29,024 INFO L87 Difference]: Start difference. First operand 1371 states and 3847 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:29,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:34:29,186 INFO L93 Difference]: Finished difference Result 1563 states and 4321 transitions. [2021-06-05 20:34:29,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 20:34:29,186 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:34:29,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:34:29,188 INFO L225 Difference]: With dead ends: 1563 [2021-06-05 20:34:29,188 INFO L226 Difference]: Without dead ends: 1477 [2021-06-05 20:34:29,188 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 52.0ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:29,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1477 states. [2021-06-05 20:34:29,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1477 to 1369. [2021-06-05 20:34:29,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1369 states, 1368 states have (on average 2.806286549707602) internal successors, (3839), 1368 states have internal predecessors, (3839), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:29,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1369 states to 1369 states and 3839 transitions. [2021-06-05 20:34:29,201 INFO L78 Accepts]: Start accepts. Automaton has 1369 states and 3839 transitions. Word has length 26 [2021-06-05 20:34:29,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:34:29,201 INFO L482 AbstractCegarLoop]: Abstraction has 1369 states and 3839 transitions. [2021-06-05 20:34:29,201 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:29,201 INFO L276 IsEmpty]: Start isEmpty. Operand 1369 states and 3839 transitions. [2021-06-05 20:34:29,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:34:29,202 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:34:29,202 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:34:29,202 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable207 [2021-06-05 20:34:29,202 INFO L430 AbstractCegarLoop]: === Iteration 209 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:34:29,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:34:29,203 INFO L82 PathProgramCache]: Analyzing trace with hash -711225138, now seen corresponding path program 207 times [2021-06-05 20:34:29,203 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:34:29,203 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1952575316] [2021-06-05 20:34:29,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:34:29,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:34:29,257 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:34:29,257 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:34:29,257 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1952575316] [2021-06-05 20:34:29,257 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1952575316] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:34:29,257 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:34:29,257 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 20:34:29,257 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1981036077] [2021-06-05 20:34:29,257 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 20:34:29,258 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:34:29,258 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 20:34:29,258 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:29,258 INFO L87 Difference]: Start difference. First operand 1369 states and 3839 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:29,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:34:29,413 INFO L93 Difference]: Finished difference Result 1575 states and 4380 transitions. [2021-06-05 20:34:29,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 20:34:29,414 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:34:29,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:34:29,415 INFO L225 Difference]: With dead ends: 1575 [2021-06-05 20:34:29,415 INFO L226 Difference]: Without dead ends: 1464 [2021-06-05 20:34:29,415 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 47.7ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:29,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1464 states. [2021-06-05 20:34:29,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1464 to 1349. [2021-06-05 20:34:29,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1349 states, 1348 states have (on average 2.807121661721068) internal successors, (3784), 1348 states have internal predecessors, (3784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:29,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1349 states to 1349 states and 3784 transitions. [2021-06-05 20:34:29,428 INFO L78 Accepts]: Start accepts. Automaton has 1349 states and 3784 transitions. Word has length 26 [2021-06-05 20:34:29,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:34:29,428 INFO L482 AbstractCegarLoop]: Abstraction has 1349 states and 3784 transitions. [2021-06-05 20:34:29,428 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:29,428 INFO L276 IsEmpty]: Start isEmpty. Operand 1349 states and 3784 transitions. [2021-06-05 20:34:29,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:34:29,429 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:34:29,429 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:34:29,429 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable208 [2021-06-05 20:34:29,429 INFO L430 AbstractCegarLoop]: === Iteration 210 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:34:29,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:34:29,430 INFO L82 PathProgramCache]: Analyzing trace with hash 40111740, now seen corresponding path program 208 times [2021-06-05 20:34:29,430 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:34:29,430 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1954360526] [2021-06-05 20:34:29,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:34:29,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:34:29,475 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:34:29,475 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:34:29,475 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1954360526] [2021-06-05 20:34:29,475 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1954360526] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:34:29,475 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:34:29,475 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:34:29,475 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [800884372] [2021-06-05 20:34:29,475 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-05 20:34:29,475 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:34:29,476 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-05 20:34:29,476 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:34:29,476 INFO L87 Difference]: Start difference. First operand 1349 states and 3784 transitions. Second operand has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:29,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:34:29,604 INFO L93 Difference]: Finished difference Result 1533 states and 4263 transitions. [2021-06-05 20:34:29,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-05 20:34:29,604 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:34:29,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:34:29,606 INFO L225 Difference]: With dead ends: 1533 [2021-06-05 20:34:29,606 INFO L226 Difference]: Without dead ends: 1448 [2021-06-05 20:34:29,606 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 38.5ms TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:34:29,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1448 states. [2021-06-05 20:34:29,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1448 to 1355. [2021-06-05 20:34:29,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1355 states, 1354 states have (on average 2.8020679468242244) internal successors, (3794), 1354 states have internal predecessors, (3794), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:29,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1355 states to 1355 states and 3794 transitions. [2021-06-05 20:34:29,619 INFO L78 Accepts]: Start accepts. Automaton has 1355 states and 3794 transitions. Word has length 26 [2021-06-05 20:34:29,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:34:29,619 INFO L482 AbstractCegarLoop]: Abstraction has 1355 states and 3794 transitions. [2021-06-05 20:34:29,619 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:29,619 INFO L276 IsEmpty]: Start isEmpty. Operand 1355 states and 3794 transitions. [2021-06-05 20:34:29,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:34:29,620 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:34:29,620 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:34:29,620 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable209 [2021-06-05 20:34:29,620 INFO L430 AbstractCegarLoop]: === Iteration 211 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:34:29,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:34:29,620 INFO L82 PathProgramCache]: Analyzing trace with hash 909556348, now seen corresponding path program 209 times [2021-06-05 20:34:29,621 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:34:29,621 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [864966189] [2021-06-05 20:34:29,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:34:29,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:34:29,667 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:34:29,667 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:34:29,667 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [864966189] [2021-06-05 20:34:29,667 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [864966189] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:34:29,667 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:34:29,667 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:34:29,667 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [55661617] [2021-06-05 20:34:29,667 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-05 20:34:29,667 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:34:29,667 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-05 20:34:29,667 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:34:29,667 INFO L87 Difference]: Start difference. First operand 1355 states and 3794 transitions. Second operand has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:29,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:34:29,796 INFO L93 Difference]: Finished difference Result 1554 states and 4325 transitions. [2021-06-05 20:34:29,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-05 20:34:29,797 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:34:29,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:34:29,798 INFO L225 Difference]: With dead ends: 1554 [2021-06-05 20:34:29,798 INFO L226 Difference]: Without dead ends: 1459 [2021-06-05 20:34:29,798 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 39.1ms TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:34:29,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1459 states. [2021-06-05 20:34:29,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1459 to 1367. [2021-06-05 20:34:29,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1367 states, 1366 states have (on average 2.7986822840409955) internal successors, (3823), 1366 states have internal predecessors, (3823), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:29,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1367 states to 1367 states and 3823 transitions. [2021-06-05 20:34:29,811 INFO L78 Accepts]: Start accepts. Automaton has 1367 states and 3823 transitions. Word has length 26 [2021-06-05 20:34:29,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:34:29,811 INFO L482 AbstractCegarLoop]: Abstraction has 1367 states and 3823 transitions. [2021-06-05 20:34:29,812 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:29,812 INFO L276 IsEmpty]: Start isEmpty. Operand 1367 states and 3823 transitions. [2021-06-05 20:34:29,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:34:29,813 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:34:29,813 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:34:29,813 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable210 [2021-06-05 20:34:29,813 INFO L430 AbstractCegarLoop]: === Iteration 212 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:34:29,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:34:29,813 INFO L82 PathProgramCache]: Analyzing trace with hash -559154882, now seen corresponding path program 210 times [2021-06-05 20:34:29,813 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:34:29,813 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2103171483] [2021-06-05 20:34:29,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:34:29,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:34:29,876 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:34:29,876 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:34:29,876 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2103171483] [2021-06-05 20:34:29,876 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2103171483] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:34:29,876 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:34:29,876 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 20:34:29,876 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [525835094] [2021-06-05 20:34:29,876 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 20:34:29,876 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:34:29,876 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 20:34:29,877 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:29,877 INFO L87 Difference]: Start difference. First operand 1367 states and 3823 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:30,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:34:30,056 INFO L93 Difference]: Finished difference Result 1615 states and 4457 transitions. [2021-06-05 20:34:30,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 20:34:30,057 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:34:30,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:34:30,058 INFO L225 Difference]: With dead ends: 1615 [2021-06-05 20:34:30,058 INFO L226 Difference]: Without dead ends: 1530 [2021-06-05 20:34:30,058 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 51.8ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:30,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1530 states. [2021-06-05 20:34:30,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1530 to 1391. [2021-06-05 20:34:30,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1391 states, 1390 states have (on average 2.7978417266187052) internal successors, (3889), 1390 states have internal predecessors, (3889), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:30,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1391 states to 1391 states and 3889 transitions. [2021-06-05 20:34:30,079 INFO L78 Accepts]: Start accepts. Automaton has 1391 states and 3889 transitions. Word has length 26 [2021-06-05 20:34:30,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:34:30,079 INFO L482 AbstractCegarLoop]: Abstraction has 1391 states and 3889 transitions. [2021-06-05 20:34:30,079 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:30,079 INFO L276 IsEmpty]: Start isEmpty. Operand 1391 states and 3889 transitions. [2021-06-05 20:34:30,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:34:30,080 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:34:30,080 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:34:30,080 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable211 [2021-06-05 20:34:30,080 INFO L430 AbstractCegarLoop]: === Iteration 213 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:34:30,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:34:30,080 INFO L82 PathProgramCache]: Analyzing trace with hash -1132552158, now seen corresponding path program 211 times [2021-06-05 20:34:30,081 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:34:30,081 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [756853188] [2021-06-05 20:34:30,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:34:30,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:34:30,140 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:34:30,140 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:34:30,140 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [756853188] [2021-06-05 20:34:30,140 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [756853188] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:34:30,141 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:34:30,141 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 20:34:30,141 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1060767621] [2021-06-05 20:34:30,141 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 20:34:30,141 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:34:30,141 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 20:34:30,141 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:30,141 INFO L87 Difference]: Start difference. First operand 1391 states and 3889 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:30,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:34:30,301 INFO L93 Difference]: Finished difference Result 1549 states and 4282 transitions. [2021-06-05 20:34:30,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 20:34:30,302 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:34:30,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:34:30,303 INFO L225 Difference]: With dead ends: 1549 [2021-06-05 20:34:30,303 INFO L226 Difference]: Without dead ends: 1466 [2021-06-05 20:34:30,303 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 51.1ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:30,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1466 states. [2021-06-05 20:34:30,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1466 to 1397. [2021-06-05 20:34:30,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1397 states, 1396 states have (on average 2.791547277936963) internal successors, (3897), 1396 states have internal predecessors, (3897), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:30,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1397 states to 1397 states and 3897 transitions. [2021-06-05 20:34:30,316 INFO L78 Accepts]: Start accepts. Automaton has 1397 states and 3897 transitions. Word has length 26 [2021-06-05 20:34:30,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:34:30,316 INFO L482 AbstractCegarLoop]: Abstraction has 1397 states and 3897 transitions. [2021-06-05 20:34:30,316 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:30,316 INFO L276 IsEmpty]: Start isEmpty. Operand 1397 states and 3897 transitions. [2021-06-05 20:34:30,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:34:30,318 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:34:30,318 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:34:30,318 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable212 [2021-06-05 20:34:30,318 INFO L430 AbstractCegarLoop]: === Iteration 214 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:34:30,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:34:30,318 INFO L82 PathProgramCache]: Analyzing trace with hash -546001310, now seen corresponding path program 212 times [2021-06-05 20:34:30,318 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:34:30,318 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [432576346] [2021-06-05 20:34:30,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:34:30,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:34:30,372 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:34:30,372 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:34:30,373 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [432576346] [2021-06-05 20:34:30,373 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [432576346] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:34:30,373 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:34:30,373 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 20:34:30,373 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1956398887] [2021-06-05 20:34:30,373 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 20:34:30,373 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:34:30,373 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 20:34:30,373 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:30,373 INFO L87 Difference]: Start difference. First operand 1397 states and 3897 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:30,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:34:30,533 INFO L93 Difference]: Finished difference Result 1624 states and 4492 transitions. [2021-06-05 20:34:30,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 20:34:30,533 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:34:30,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:34:30,535 INFO L225 Difference]: With dead ends: 1624 [2021-06-05 20:34:30,535 INFO L226 Difference]: Without dead ends: 1536 [2021-06-05 20:34:30,535 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 47.6ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:30,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1536 states. [2021-06-05 20:34:30,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1536 to 1423. [2021-06-05 20:34:30,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1423 states, 1422 states have (on average 2.7939521800281293) internal successors, (3973), 1422 states have internal predecessors, (3973), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:30,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1423 states to 1423 states and 3973 transitions. [2021-06-05 20:34:30,549 INFO L78 Accepts]: Start accepts. Automaton has 1423 states and 3973 transitions. Word has length 26 [2021-06-05 20:34:30,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:34:30,549 INFO L482 AbstractCegarLoop]: Abstraction has 1423 states and 3973 transitions. [2021-06-05 20:34:30,549 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:30,549 INFO L276 IsEmpty]: Start isEmpty. Operand 1423 states and 3973 transitions. [2021-06-05 20:34:30,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:34:30,550 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:34:30,550 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:34:30,550 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable213 [2021-06-05 20:34:30,550 INFO L430 AbstractCegarLoop]: === Iteration 215 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:34:30,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:34:30,550 INFO L82 PathProgramCache]: Analyzing trace with hash -1258069152, now seen corresponding path program 213 times [2021-06-05 20:34:30,550 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:34:30,551 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1304974382] [2021-06-05 20:34:30,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:34:30,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:34:30,605 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:34:30,605 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:34:30,605 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1304974382] [2021-06-05 20:34:30,605 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1304974382] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:34:30,605 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:34:30,605 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 20:34:30,605 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1014702243] [2021-06-05 20:34:30,605 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 20:34:30,606 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:34:30,606 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 20:34:30,606 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:30,606 INFO L87 Difference]: Start difference. First operand 1423 states and 3973 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:30,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:34:30,763 INFO L93 Difference]: Finished difference Result 1572 states and 4345 transitions. [2021-06-05 20:34:30,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 20:34:30,764 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:34:30,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:34:30,765 INFO L225 Difference]: With dead ends: 1572 [2021-06-05 20:34:30,765 INFO L226 Difference]: Without dead ends: 1484 [2021-06-05 20:34:30,765 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 47.8ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:30,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1484 states. [2021-06-05 20:34:30,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1484 to 1415. [2021-06-05 20:34:30,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1415 states, 1414 states have (on average 2.799151343705799) internal successors, (3958), 1414 states have internal predecessors, (3958), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:30,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1415 states to 1415 states and 3958 transitions. [2021-06-05 20:34:30,779 INFO L78 Accepts]: Start accepts. Automaton has 1415 states and 3958 transitions. Word has length 26 [2021-06-05 20:34:30,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:34:30,779 INFO L482 AbstractCegarLoop]: Abstraction has 1415 states and 3958 transitions. [2021-06-05 20:34:30,779 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:30,779 INFO L276 IsEmpty]: Start isEmpty. Operand 1415 states and 3958 transitions. [2021-06-05 20:34:30,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:34:30,780 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:34:30,780 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:34:30,780 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable214 [2021-06-05 20:34:30,780 INFO L430 AbstractCegarLoop]: === Iteration 216 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:34:30,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:34:30,780 INFO L82 PathProgramCache]: Analyzing trace with hash -92316360, now seen corresponding path program 214 times [2021-06-05 20:34:30,780 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:34:30,780 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [503209003] [2021-06-05 20:34:30,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:34:30,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:34:30,833 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:34:30,833 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:34:30,833 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [503209003] [2021-06-05 20:34:30,834 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [503209003] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:34:30,834 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:34:30,834 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 20:34:30,834 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [600729366] [2021-06-05 20:34:30,834 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 20:34:30,834 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:34:30,834 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 20:34:30,834 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:30,834 INFO L87 Difference]: Start difference. First operand 1415 states and 3958 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:30,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:34:30,995 INFO L93 Difference]: Finished difference Result 1653 states and 4558 transitions. [2021-06-05 20:34:30,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 20:34:30,995 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:34:30,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:34:30,997 INFO L225 Difference]: With dead ends: 1653 [2021-06-05 20:34:30,997 INFO L226 Difference]: Without dead ends: 1514 [2021-06-05 20:34:30,997 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 46.3ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:31,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1514 states. [2021-06-05 20:34:31,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1514 to 1381. [2021-06-05 20:34:31,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1381 states, 1380 states have (on average 2.7971014492753623) internal successors, (3860), 1380 states have internal predecessors, (3860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:31,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1381 states to 1381 states and 3860 transitions. [2021-06-05 20:34:31,011 INFO L78 Accepts]: Start accepts. Automaton has 1381 states and 3860 transitions. Word has length 26 [2021-06-05 20:34:31,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:34:31,011 INFO L482 AbstractCegarLoop]: Abstraction has 1381 states and 3860 transitions. [2021-06-05 20:34:31,011 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:31,011 INFO L276 IsEmpty]: Start isEmpty. Operand 1381 states and 3860 transitions. [2021-06-05 20:34:31,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:34:31,012 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:34:31,012 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:34:31,012 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable215 [2021-06-05 20:34:31,012 INFO L430 AbstractCegarLoop]: === Iteration 217 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:34:31,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:34:31,012 INFO L82 PathProgramCache]: Analyzing trace with hash -1103631634, now seen corresponding path program 215 times [2021-06-05 20:34:31,013 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:34:31,013 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1547696850] [2021-06-05 20:34:31,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:34:31,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:34:31,067 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:34:31,067 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:34:31,067 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1547696850] [2021-06-05 20:34:31,068 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1547696850] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:34:31,068 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:34:31,068 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 20:34:31,068 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031578901] [2021-06-05 20:34:31,068 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 20:34:31,068 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:34:31,068 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 20:34:31,068 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:31,068 INFO L87 Difference]: Start difference. First operand 1381 states and 3860 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:31,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:34:31,233 INFO L93 Difference]: Finished difference Result 1627 states and 4481 transitions. [2021-06-05 20:34:31,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 20:34:31,233 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:34:31,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:34:31,235 INFO L225 Difference]: With dead ends: 1627 [2021-06-05 20:34:31,235 INFO L226 Difference]: Without dead ends: 1465 [2021-06-05 20:34:31,235 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 47.9ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:31,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1465 states. [2021-06-05 20:34:31,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1465 to 1360. [2021-06-05 20:34:31,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1360 states, 1359 states have (on average 2.7991169977924946) internal successors, (3804), 1359 states have internal predecessors, (3804), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:31,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1360 states to 1360 states and 3804 transitions. [2021-06-05 20:34:31,248 INFO L78 Accepts]: Start accepts. Automaton has 1360 states and 3804 transitions. Word has length 26 [2021-06-05 20:34:31,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:34:31,248 INFO L482 AbstractCegarLoop]: Abstraction has 1360 states and 3804 transitions. [2021-06-05 20:34:31,248 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:31,248 INFO L276 IsEmpty]: Start isEmpty. Operand 1360 states and 3804 transitions. [2021-06-05 20:34:31,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:34:31,249 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:34:31,249 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:34:31,250 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable216 [2021-06-05 20:34:31,250 INFO L430 AbstractCegarLoop]: === Iteration 218 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:34:31,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:34:31,250 INFO L82 PathProgramCache]: Analyzing trace with hash -1441326566, now seen corresponding path program 216 times [2021-06-05 20:34:31,250 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:34:31,250 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [239139266] [2021-06-05 20:34:31,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:34:31,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:34:31,308 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:34:31,308 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:34:31,308 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [239139266] [2021-06-05 20:34:31,308 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [239139266] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:34:31,308 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:34:31,309 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 20:34:31,309 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [874638457] [2021-06-05 20:34:31,309 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 20:34:31,309 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:34:31,309 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 20:34:31,309 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:31,309 INFO L87 Difference]: Start difference. First operand 1360 states and 3804 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:31,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:34:31,471 INFO L93 Difference]: Finished difference Result 1494 states and 4137 transitions. [2021-06-05 20:34:31,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 20:34:31,472 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:34:31,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:34:31,473 INFO L225 Difference]: With dead ends: 1494 [2021-06-05 20:34:31,473 INFO L226 Difference]: Without dead ends: 1409 [2021-06-05 20:34:31,473 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 51.4ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:31,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1409 states. [2021-06-05 20:34:31,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1409 to 1353. [2021-06-05 20:34:31,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1353 states, 1352 states have (on average 2.794378698224852) internal successors, (3778), 1352 states have internal predecessors, (3778), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:31,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1353 states to 1353 states and 3778 transitions. [2021-06-05 20:34:31,487 INFO L78 Accepts]: Start accepts. Automaton has 1353 states and 3778 transitions. Word has length 26 [2021-06-05 20:34:31,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:34:31,487 INFO L482 AbstractCegarLoop]: Abstraction has 1353 states and 3778 transitions. [2021-06-05 20:34:31,487 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:31,487 INFO L276 IsEmpty]: Start isEmpty. Operand 1353 states and 3778 transitions. [2021-06-05 20:34:31,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:34:31,488 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:34:31,488 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:34:31,488 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable217 [2021-06-05 20:34:31,488 INFO L430 AbstractCegarLoop]: === Iteration 219 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:34:31,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:34:31,488 INFO L82 PathProgramCache]: Analyzing trace with hash -571881958, now seen corresponding path program 217 times [2021-06-05 20:34:31,488 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:34:31,488 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [883343496] [2021-06-05 20:34:31,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:34:31,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:34:31,546 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:34:31,546 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:34:31,546 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [883343496] [2021-06-05 20:34:31,546 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [883343496] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:34:31,546 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:34:31,546 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 20:34:31,546 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [302925344] [2021-06-05 20:34:31,546 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 20:34:31,546 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:34:31,547 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 20:34:31,547 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:31,547 INFO L87 Difference]: Start difference. First operand 1353 states and 3778 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:31,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:34:31,709 INFO L93 Difference]: Finished difference Result 1511 states and 4172 transitions. [2021-06-05 20:34:31,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 20:34:31,709 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:34:31,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:34:31,711 INFO L225 Difference]: With dead ends: 1511 [2021-06-05 20:34:31,711 INFO L226 Difference]: Without dead ends: 1416 [2021-06-05 20:34:31,711 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 49.4ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:31,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1416 states. [2021-06-05 20:34:31,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1416 to 1354. [2021-06-05 20:34:31,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1354 states, 1353 states have (on average 2.793052475979305) internal successors, (3779), 1353 states have internal predecessors, (3779), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:31,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1354 states to 1354 states and 3779 transitions. [2021-06-05 20:34:31,724 INFO L78 Accepts]: Start accepts. Automaton has 1354 states and 3779 transitions. Word has length 26 [2021-06-05 20:34:31,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:34:31,724 INFO L482 AbstractCegarLoop]: Abstraction has 1354 states and 3779 transitions. [2021-06-05 20:34:31,724 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:31,724 INFO L276 IsEmpty]: Start isEmpty. Operand 1354 states and 3779 transitions. [2021-06-05 20:34:31,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:34:31,725 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:34:31,725 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:34:31,725 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable218 [2021-06-05 20:34:31,725 INFO L430 AbstractCegarLoop]: === Iteration 220 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:34:31,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:34:31,725 INFO L82 PathProgramCache]: Analyzing trace with hash -2040593188, now seen corresponding path program 218 times [2021-06-05 20:34:31,725 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:34:31,725 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2012698387] [2021-06-05 20:34:31,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:34:31,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:34:31,780 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:34:31,780 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:34:31,781 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2012698387] [2021-06-05 20:34:31,781 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2012698387] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:34:31,781 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:34:31,781 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 20:34:31,781 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [723181164] [2021-06-05 20:34:31,781 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 20:34:31,781 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:34:31,781 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 20:34:31,781 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:31,781 INFO L87 Difference]: Start difference. First operand 1354 states and 3779 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:31,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:34:31,944 INFO L93 Difference]: Finished difference Result 1525 states and 4210 transitions. [2021-06-05 20:34:31,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 20:34:31,944 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:34:31,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:34:31,945 INFO L225 Difference]: With dead ends: 1525 [2021-06-05 20:34:31,945 INFO L226 Difference]: Without dead ends: 1440 [2021-06-05 20:34:31,945 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 48.2ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:31,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1440 states. [2021-06-05 20:34:31,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1440 to 1356. [2021-06-05 20:34:31,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1356 states, 1355 states have (on average 2.7948339483394835) internal successors, (3787), 1355 states have internal predecessors, (3787), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:31,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1356 states to 1356 states and 3787 transitions. [2021-06-05 20:34:31,958 INFO L78 Accepts]: Start accepts. Automaton has 1356 states and 3787 transitions. Word has length 26 [2021-06-05 20:34:31,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:34:31,958 INFO L482 AbstractCegarLoop]: Abstraction has 1356 states and 3787 transitions. [2021-06-05 20:34:31,958 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:31,958 INFO L276 IsEmpty]: Start isEmpty. Operand 1356 states and 3787 transitions. [2021-06-05 20:34:31,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:34:31,960 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:34:31,960 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:34:31,960 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable219 [2021-06-05 20:34:31,960 INFO L430 AbstractCegarLoop]: === Iteration 221 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:34:31,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:34:31,960 INFO L82 PathProgramCache]: Analyzing trace with hash 1680976832, now seen corresponding path program 219 times [2021-06-05 20:34:31,960 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:34:31,960 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1835690786] [2021-06-05 20:34:31,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:34:31,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:34:32,016 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:34:32,016 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:34:32,016 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1835690786] [2021-06-05 20:34:32,016 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1835690786] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:34:32,016 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:34:32,016 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 20:34:32,016 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [4309350] [2021-06-05 20:34:32,016 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 20:34:32,016 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:34:32,017 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 20:34:32,017 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:32,017 INFO L87 Difference]: Start difference. First operand 1356 states and 3787 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:32,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:34:32,184 INFO L93 Difference]: Finished difference Result 1497 states and 4138 transitions. [2021-06-05 20:34:32,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 20:34:32,184 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:34:32,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:34:32,186 INFO L225 Difference]: With dead ends: 1497 [2021-06-05 20:34:32,186 INFO L226 Difference]: Without dead ends: 1414 [2021-06-05 20:34:32,186 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 49.2ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:32,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1414 states. [2021-06-05 20:34:32,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1414 to 1357. [2021-06-05 20:34:32,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1357 states, 1356 states have (on average 2.7942477876106193) internal successors, (3789), 1356 states have internal predecessors, (3789), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:32,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1357 states to 1357 states and 3789 transitions. [2021-06-05 20:34:32,199 INFO L78 Accepts]: Start accepts. Automaton has 1357 states and 3789 transitions. Word has length 26 [2021-06-05 20:34:32,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:34:32,199 INFO L482 AbstractCegarLoop]: Abstraction has 1357 states and 3789 transitions. [2021-06-05 20:34:32,199 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:32,199 INFO L276 IsEmpty]: Start isEmpty. Operand 1357 states and 3789 transitions. [2021-06-05 20:34:32,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:34:32,200 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:34:32,200 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:34:32,200 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable220 [2021-06-05 20:34:32,200 INFO L430 AbstractCegarLoop]: === Iteration 222 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:34:32,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:34:32,201 INFO L82 PathProgramCache]: Analyzing trace with hash -2027439616, now seen corresponding path program 220 times [2021-06-05 20:34:32,201 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:34:32,201 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [948072040] [2021-06-05 20:34:32,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:34:32,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:34:32,259 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:34:32,259 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:34:32,259 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [948072040] [2021-06-05 20:34:32,259 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [948072040] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:34:32,259 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:34:32,259 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 20:34:32,259 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [278768103] [2021-06-05 20:34:32,260 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 20:34:32,260 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:34:32,260 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 20:34:32,260 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:32,260 INFO L87 Difference]: Start difference. First operand 1357 states and 3789 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:32,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:34:32,417 INFO L93 Difference]: Finished difference Result 1489 states and 4130 transitions. [2021-06-05 20:34:32,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 20:34:32,417 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:34:32,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:34:32,419 INFO L225 Difference]: With dead ends: 1489 [2021-06-05 20:34:32,419 INFO L226 Difference]: Without dead ends: 1401 [2021-06-05 20:34:32,419 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 49.4ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:32,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1401 states. [2021-06-05 20:34:32,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1401 to 1361. [2021-06-05 20:34:32,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1361 states, 1360 states have (on average 2.7948529411764707) internal successors, (3801), 1360 states have internal predecessors, (3801), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:32,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1361 states to 1361 states and 3801 transitions. [2021-06-05 20:34:32,432 INFO L78 Accepts]: Start accepts. Automaton has 1361 states and 3801 transitions. Word has length 26 [2021-06-05 20:34:32,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:34:32,432 INFO L482 AbstractCegarLoop]: Abstraction has 1361 states and 3801 transitions. [2021-06-05 20:34:32,432 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:32,432 INFO L276 IsEmpty]: Start isEmpty. Operand 1361 states and 3801 transitions. [2021-06-05 20:34:32,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:34:32,433 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:34:32,433 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:34:32,433 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable221 [2021-06-05 20:34:32,433 INFO L430 AbstractCegarLoop]: === Iteration 223 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:34:32,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:34:32,433 INFO L82 PathProgramCache]: Analyzing trace with hash 1555459838, now seen corresponding path program 221 times [2021-06-05 20:34:32,434 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:34:32,434 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1529556316] [2021-06-05 20:34:32,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:34:32,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:34:32,489 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:34:32,489 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:34:32,489 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1529556316] [2021-06-05 20:34:32,489 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1529556316] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:34:32,489 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:34:32,489 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 20:34:32,489 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [750054946] [2021-06-05 20:34:32,490 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 20:34:32,490 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:34:32,490 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 20:34:32,490 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:32,490 INFO L87 Difference]: Start difference. First operand 1361 states and 3801 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:32,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:34:32,651 INFO L93 Difference]: Finished difference Result 1502 states and 4148 transitions. [2021-06-05 20:34:32,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 20:34:32,651 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:34:32,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:34:32,653 INFO L225 Difference]: With dead ends: 1502 [2021-06-05 20:34:32,653 INFO L226 Difference]: Without dead ends: 1414 [2021-06-05 20:34:32,653 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 48.6ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:32,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1414 states. [2021-06-05 20:34:32,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1414 to 1360. [2021-06-05 20:34:32,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1360 states, 1359 states have (on average 2.7969094922737305) internal successors, (3801), 1359 states have internal predecessors, (3801), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:32,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1360 states to 1360 states and 3801 transitions. [2021-06-05 20:34:32,666 INFO L78 Accepts]: Start accepts. Automaton has 1360 states and 3801 transitions. Word has length 26 [2021-06-05 20:34:32,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:34:32,666 INFO L482 AbstractCegarLoop]: Abstraction has 1360 states and 3801 transitions. [2021-06-05 20:34:32,666 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:32,666 INFO L276 IsEmpty]: Start isEmpty. Operand 1360 states and 3801 transitions. [2021-06-05 20:34:32,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:34:32,667 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:34:32,667 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:34:32,667 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable222 [2021-06-05 20:34:32,667 INFO L430 AbstractCegarLoop]: === Iteration 224 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:34:32,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:34:32,667 INFO L82 PathProgramCache]: Analyzing trace with hash -528175042, now seen corresponding path program 222 times [2021-06-05 20:34:32,667 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:34:32,667 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1738547558] [2021-06-05 20:34:32,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:34:32,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:34:32,728 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:34:32,728 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:34:32,729 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1738547558] [2021-06-05 20:34:32,729 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1738547558] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:34:32,729 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:34:32,729 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 20:34:32,729 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [496922434] [2021-06-05 20:34:32,729 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 20:34:32,729 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:34:32,729 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 20:34:32,729 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:32,729 INFO L87 Difference]: Start difference. First operand 1360 states and 3801 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:32,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:34:32,893 INFO L93 Difference]: Finished difference Result 1528 states and 4222 transitions. [2021-06-05 20:34:32,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 20:34:32,893 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:34:32,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:34:32,894 INFO L225 Difference]: With dead ends: 1528 [2021-06-05 20:34:32,894 INFO L226 Difference]: Without dead ends: 1443 [2021-06-05 20:34:32,895 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 53.8ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:32,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1443 states. [2021-06-05 20:34:32,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1443 to 1358. [2021-06-05 20:34:32,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1358 states, 1357 states have (on average 2.7951363301400147) internal successors, (3793), 1357 states have internal predecessors, (3793), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:32,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1358 states to 1358 states and 3793 transitions. [2021-06-05 20:34:32,907 INFO L78 Accepts]: Start accepts. Automaton has 1358 states and 3793 transitions. Word has length 26 [2021-06-05 20:34:32,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:34:32,907 INFO L482 AbstractCegarLoop]: Abstraction has 1358 states and 3793 transitions. [2021-06-05 20:34:32,908 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:32,908 INFO L276 IsEmpty]: Start isEmpty. Operand 1358 states and 3793 transitions. [2021-06-05 20:34:32,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:34:32,909 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:34:32,909 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:34:32,909 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable223 [2021-06-05 20:34:32,909 INFO L430 AbstractCegarLoop]: === Iteration 225 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:34:32,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:34:32,909 INFO L82 PathProgramCache]: Analyzing trace with hash -1101572318, now seen corresponding path program 223 times [2021-06-05 20:34:32,909 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:34:32,909 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1147038090] [2021-06-05 20:34:32,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:34:32,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:34:32,976 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:34:32,976 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:34:32,976 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1147038090] [2021-06-05 20:34:32,976 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1147038090] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:34:32,976 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:34:32,976 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 20:34:32,976 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [908228782] [2021-06-05 20:34:32,976 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 20:34:32,976 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:34:32,976 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 20:34:32,977 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:32,977 INFO L87 Difference]: Start difference. First operand 1358 states and 3793 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:33,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:34:33,139 INFO L93 Difference]: Finished difference Result 1519 states and 4205 transitions. [2021-06-05 20:34:33,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 20:34:33,139 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:34:33,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:34:33,140 INFO L225 Difference]: With dead ends: 1519 [2021-06-05 20:34:33,140 INFO L226 Difference]: Without dead ends: 1436 [2021-06-05 20:34:33,141 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 48.4ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:33,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1436 states. [2021-06-05 20:34:33,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1436 to 1359. [2021-06-05 20:34:33,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1359 states, 1358 states have (on average 2.792341678939617) internal successors, (3792), 1358 states have internal predecessors, (3792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:33,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1359 states to 1359 states and 3792 transitions. [2021-06-05 20:34:33,154 INFO L78 Accepts]: Start accepts. Automaton has 1359 states and 3792 transitions. Word has length 26 [2021-06-05 20:34:33,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:34:33,154 INFO L482 AbstractCegarLoop]: Abstraction has 1359 states and 3792 transitions. [2021-06-05 20:34:33,154 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:33,154 INFO L276 IsEmpty]: Start isEmpty. Operand 1359 states and 3792 transitions. [2021-06-05 20:34:33,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:34:33,155 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:34:33,155 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:34:33,155 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable224 [2021-06-05 20:34:33,155 INFO L430 AbstractCegarLoop]: === Iteration 226 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:34:33,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:34:33,155 INFO L82 PathProgramCache]: Analyzing trace with hash 1944327842, now seen corresponding path program 224 times [2021-06-05 20:34:33,155 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:34:33,155 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1806769146] [2021-06-05 20:34:33,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:34:33,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:34:33,218 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:34:33,218 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:34:33,218 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1806769146] [2021-06-05 20:34:33,218 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1806769146] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:34:33,218 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:34:33,218 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 20:34:33,218 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2025933043] [2021-06-05 20:34:33,218 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 20:34:33,218 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:34:33,218 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 20:34:33,218 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:33,218 INFO L87 Difference]: Start difference. First operand 1359 states and 3792 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:33,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:34:33,376 INFO L93 Difference]: Finished difference Result 1503 states and 4164 transitions. [2021-06-05 20:34:33,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 20:34:33,376 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:34:33,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:34:33,378 INFO L225 Difference]: With dead ends: 1503 [2021-06-05 20:34:33,378 INFO L226 Difference]: Without dead ends: 1416 [2021-06-05 20:34:33,378 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 55.5ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:33,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1416 states. [2021-06-05 20:34:33,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1416 to 1358. [2021-06-05 20:34:33,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1358 states, 1357 states have (on average 2.7943994104642593) internal successors, (3792), 1357 states have internal predecessors, (3792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:33,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1358 states to 1358 states and 3792 transitions. [2021-06-05 20:34:33,391 INFO L78 Accepts]: Start accepts. Automaton has 1358 states and 3792 transitions. Word has length 26 [2021-06-05 20:34:33,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:34:33,391 INFO L482 AbstractCegarLoop]: Abstraction has 1358 states and 3792 transitions. [2021-06-05 20:34:33,391 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:33,391 INFO L276 IsEmpty]: Start isEmpty. Operand 1358 states and 3792 transitions. [2021-06-05 20:34:33,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:34:33,393 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:34:33,393 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:34:33,393 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable225 [2021-06-05 20:34:33,393 INFO L430 AbstractCegarLoop]: === Iteration 227 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:34:33,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:34:33,393 INFO L82 PathProgramCache]: Analyzing trace with hash 1204204642, now seen corresponding path program 225 times [2021-06-05 20:34:33,393 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:34:33,393 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [766362886] [2021-06-05 20:34:33,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:34:33,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:34:33,451 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:34:33,451 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:34:33,451 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [766362886] [2021-06-05 20:34:33,451 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [766362886] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:34:33,452 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:34:33,452 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 20:34:33,452 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1093635054] [2021-06-05 20:34:33,452 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 20:34:33,452 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:34:33,452 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 20:34:33,452 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:33,452 INFO L87 Difference]: Start difference. First operand 1358 states and 3792 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:33,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:34:33,626 INFO L93 Difference]: Finished difference Result 1491 states and 4141 transitions. [2021-06-05 20:34:33,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 20:34:33,626 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:34:33,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:34:33,627 INFO L225 Difference]: With dead ends: 1491 [2021-06-05 20:34:33,627 INFO L226 Difference]: Without dead ends: 1403 [2021-06-05 20:34:33,628 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 51.3ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:33,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1403 states. [2021-06-05 20:34:33,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1403 to 1360. [2021-06-05 20:34:33,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1360 states, 1359 states have (on average 2.795437821927888) internal successors, (3799), 1359 states have internal predecessors, (3799), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:33,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1360 states to 1360 states and 3799 transitions. [2021-06-05 20:34:33,641 INFO L78 Accepts]: Start accepts. Automaton has 1360 states and 3799 transitions. Word has length 26 [2021-06-05 20:34:33,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:34:33,641 INFO L482 AbstractCegarLoop]: Abstraction has 1360 states and 3799 transitions. [2021-06-05 20:34:33,641 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:33,641 INFO L276 IsEmpty]: Start isEmpty. Operand 1360 states and 3799 transitions. [2021-06-05 20:34:33,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:34:33,642 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:34:33,642 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:34:33,642 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable226 [2021-06-05 20:34:33,642 INFO L430 AbstractCegarLoop]: === Iteration 228 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:34:33,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:34:33,642 INFO L82 PathProgramCache]: Analyzing trace with hash 492136800, now seen corresponding path program 226 times [2021-06-05 20:34:33,643 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:34:33,643 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1868158877] [2021-06-05 20:34:33,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:34:33,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:34:33,698 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:34:33,698 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:34:33,698 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1868158877] [2021-06-05 20:34:33,698 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1868158877] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:34:33,698 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:34:33,698 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 20:34:33,698 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135163776] [2021-06-05 20:34:33,698 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 20:34:33,698 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:34:33,698 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 20:34:33,698 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:33,699 INFO L87 Difference]: Start difference. First operand 1360 states and 3799 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:33,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:34:33,860 INFO L93 Difference]: Finished difference Result 1499 states and 4143 transitions. [2021-06-05 20:34:33,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 20:34:33,860 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:34:33,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:34:33,861 INFO L225 Difference]: With dead ends: 1499 [2021-06-05 20:34:33,861 INFO L226 Difference]: Without dead ends: 1413 [2021-06-05 20:34:33,862 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 48.4ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:33,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1413 states. [2021-06-05 20:34:33,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1413 to 1359. [2021-06-05 20:34:33,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1359 states, 1358 states have (on average 2.792341678939617) internal successors, (3792), 1358 states have internal predecessors, (3792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:33,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1359 states to 1359 states and 3792 transitions. [2021-06-05 20:34:33,875 INFO L78 Accepts]: Start accepts. Automaton has 1359 states and 3792 transitions. Word has length 26 [2021-06-05 20:34:33,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:34:33,875 INFO L482 AbstractCegarLoop]: Abstraction has 1359 states and 3792 transitions. [2021-06-05 20:34:33,875 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:33,875 INFO L276 IsEmpty]: Start isEmpty. Operand 1359 states and 3792 transitions. [2021-06-05 20:34:33,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:34:33,876 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:34:33,876 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:34:33,876 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable227 [2021-06-05 20:34:33,876 INFO L430 AbstractCegarLoop]: === Iteration 229 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:34:33,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:34:33,877 INFO L82 PathProgramCache]: Analyzing trace with hash -187939904, now seen corresponding path program 227 times [2021-06-05 20:34:33,877 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:34:33,877 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2013064700] [2021-06-05 20:34:33,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:34:33,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:34:33,937 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:34:33,937 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:34:33,937 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2013064700] [2021-06-05 20:34:33,937 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2013064700] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:34:33,937 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:34:33,938 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 20:34:33,938 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [955220637] [2021-06-05 20:34:33,938 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 20:34:33,938 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:34:33,938 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 20:34:33,938 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:33,938 INFO L87 Difference]: Start difference. First operand 1359 states and 3792 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:34,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:34:34,099 INFO L93 Difference]: Finished difference Result 1555 states and 4298 transitions. [2021-06-05 20:34:34,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 20:34:34,100 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:34:34,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:34:34,101 INFO L225 Difference]: With dead ends: 1555 [2021-06-05 20:34:34,101 INFO L226 Difference]: Without dead ends: 1458 [2021-06-05 20:34:34,101 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 52.5ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:34,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1458 states. [2021-06-05 20:34:34,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1458 to 1352. [2021-06-05 20:34:34,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1352 states, 1351 states have (on average 2.789785344189489) internal successors, (3769), 1351 states have internal predecessors, (3769), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:34,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1352 states to 1352 states and 3769 transitions. [2021-06-05 20:34:34,114 INFO L78 Accepts]: Start accepts. Automaton has 1352 states and 3769 transitions. Word has length 26 [2021-06-05 20:34:34,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:34:34,114 INFO L482 AbstractCegarLoop]: Abstraction has 1352 states and 3769 transitions. [2021-06-05 20:34:34,114 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:34,114 INFO L276 IsEmpty]: Start isEmpty. Operand 1352 states and 3769 transitions. [2021-06-05 20:34:34,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:34:34,116 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:34:34,116 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:34:34,116 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable228 [2021-06-05 20:34:34,116 INFO L430 AbstractCegarLoop]: === Iteration 230 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:34:34,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:34:34,116 INFO L82 PathProgramCache]: Analyzing trace with hash 402377150, now seen corresponding path program 228 times [2021-06-05 20:34:34,116 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:34:34,116 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [984342339] [2021-06-05 20:34:34,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:34:34,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:34:34,173 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:34:34,173 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:34:34,173 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [984342339] [2021-06-05 20:34:34,174 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [984342339] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:34:34,174 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:34:34,174 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 20:34:34,174 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [95808600] [2021-06-05 20:34:34,174 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 20:34:34,174 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:34:34,174 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 20:34:34,174 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:34,174 INFO L87 Difference]: Start difference. First operand 1352 states and 3769 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:34,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:34:34,337 INFO L93 Difference]: Finished difference Result 1504 states and 4155 transitions. [2021-06-05 20:34:34,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 20:34:34,338 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:34:34,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:34:34,339 INFO L225 Difference]: With dead ends: 1504 [2021-06-05 20:34:34,339 INFO L226 Difference]: Without dead ends: 1415 [2021-06-05 20:34:34,339 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 49.3ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:34,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1415 states. [2021-06-05 20:34:34,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1415 to 1347. [2021-06-05 20:34:34,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1347 states, 1346 states have (on average 2.791976225854383) internal successors, (3758), 1346 states have internal predecessors, (3758), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:34,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1347 states to 1347 states and 3758 transitions. [2021-06-05 20:34:34,352 INFO L78 Accepts]: Start accepts. Automaton has 1347 states and 3758 transitions. Word has length 26 [2021-06-05 20:34:34,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:34:34,352 INFO L482 AbstractCegarLoop]: Abstraction has 1347 states and 3758 transitions. [2021-06-05 20:34:34,352 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:34,353 INFO L276 IsEmpty]: Start isEmpty. Operand 1347 states and 3758 transitions. [2021-06-05 20:34:34,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:34:34,354 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:34:34,354 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:34:34,354 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable229 [2021-06-05 20:34:34,354 INFO L430 AbstractCegarLoop]: === Iteration 231 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:34:34,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:34:34,354 INFO L82 PathProgramCache]: Analyzing trace with hash 1005160398, now seen corresponding path program 229 times [2021-06-05 20:34:34,354 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:34:34,354 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [272849804] [2021-06-05 20:34:34,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:34:34,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:34:34,400 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:34:34,400 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:34:34,400 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [272849804] [2021-06-05 20:34:34,400 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [272849804] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:34:34,400 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:34:34,400 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:34:34,401 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1771851720] [2021-06-05 20:34:34,401 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-05 20:34:34,401 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:34:34,401 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-05 20:34:34,401 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:34:34,401 INFO L87 Difference]: Start difference. First operand 1347 states and 3758 transitions. Second operand has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:34,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:34:34,530 INFO L93 Difference]: Finished difference Result 1541 states and 4265 transitions. [2021-06-05 20:34:34,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-05 20:34:34,530 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:34:34,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:34:34,532 INFO L225 Difference]: With dead ends: 1541 [2021-06-05 20:34:34,532 INFO L226 Difference]: Without dead ends: 1453 [2021-06-05 20:34:34,532 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 39.2ms TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:34:34,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1453 states. [2021-06-05 20:34:34,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1453 to 1373. [2021-06-05 20:34:34,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1373 states, 1372 states have (on average 2.794460641399417) internal successors, (3834), 1372 states have internal predecessors, (3834), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:34,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1373 states to 1373 states and 3834 transitions. [2021-06-05 20:34:34,546 INFO L78 Accepts]: Start accepts. Automaton has 1373 states and 3834 transitions. Word has length 26 [2021-06-05 20:34:34,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:34:34,546 INFO L482 AbstractCegarLoop]: Abstraction has 1373 states and 3834 transitions. [2021-06-05 20:34:34,546 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:34,546 INFO L276 IsEmpty]: Start isEmpty. Operand 1373 states and 3834 transitions. [2021-06-05 20:34:34,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:34:34,547 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:34:34,547 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:34:34,547 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable230 [2021-06-05 20:34:34,547 INFO L430 AbstractCegarLoop]: === Iteration 232 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:34:34,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:34:34,547 INFO L82 PathProgramCache]: Analyzing trace with hash 293092556, now seen corresponding path program 230 times [2021-06-05 20:34:34,547 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:34:34,548 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1118119529] [2021-06-05 20:34:34,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:34:34,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:34:34,604 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:34:34,604 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:34:34,604 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1118119529] [2021-06-05 20:34:34,604 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1118119529] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:34:34,604 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:34:34,604 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 20:34:34,604 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [302122447] [2021-06-05 20:34:34,604 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 20:34:34,604 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:34:34,605 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 20:34:34,605 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:34,605 INFO L87 Difference]: Start difference. First operand 1373 states and 3834 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:34,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:34:34,766 INFO L93 Difference]: Finished difference Result 1604 states and 4405 transitions. [2021-06-05 20:34:34,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 20:34:34,767 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:34:34,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:34:34,768 INFO L225 Difference]: With dead ends: 1604 [2021-06-05 20:34:34,768 INFO L226 Difference]: Without dead ends: 1393 [2021-06-05 20:34:34,768 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 48.3ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:34,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1393 states. [2021-06-05 20:34:34,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1393 to 1293. [2021-06-05 20:34:34,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1293 states, 1292 states have (on average 2.7809597523219813) internal successors, (3593), 1292 states have internal predecessors, (3593), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:34,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1293 states to 1293 states and 3593 transitions. [2021-06-05 20:34:34,781 INFO L78 Accepts]: Start accepts. Automaton has 1293 states and 3593 transitions. Word has length 26 [2021-06-05 20:34:34,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:34:34,781 INFO L482 AbstractCegarLoop]: Abstraction has 1293 states and 3593 transitions. [2021-06-05 20:34:34,781 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:34,781 INFO L276 IsEmpty]: Start isEmpty. Operand 1293 states and 3593 transitions. [2021-06-05 20:34:34,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:34:34,782 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:34:34,782 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:34:34,782 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable231 [2021-06-05 20:34:34,782 INFO L430 AbstractCegarLoop]: === Iteration 233 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:34:34,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:34:34,782 INFO L82 PathProgramCache]: Analyzing trace with hash -705195920, now seen corresponding path program 231 times [2021-06-05 20:34:34,782 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:34:34,782 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [613549028] [2021-06-05 20:34:34,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:34:34,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:34:34,843 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:34:34,843 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:34:34,844 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [613549028] [2021-06-05 20:34:34,844 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [613549028] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:34:34,844 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:34:34,844 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 20:34:34,844 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [252184007] [2021-06-05 20:34:34,844 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 20:34:34,844 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:34:34,844 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 20:34:34,844 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:34,844 INFO L87 Difference]: Start difference. First operand 1293 states and 3593 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:35,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:34:35,001 INFO L93 Difference]: Finished difference Result 1480 states and 4066 transitions. [2021-06-05 20:34:35,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 20:34:35,001 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:34:35,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:34:35,003 INFO L225 Difference]: With dead ends: 1480 [2021-06-05 20:34:35,003 INFO L226 Difference]: Without dead ends: 1392 [2021-06-05 20:34:35,003 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 48.2ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:35,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1392 states. [2021-06-05 20:34:35,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1392 to 1290. [2021-06-05 20:34:35,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1290 states, 1289 states have (on average 2.7812257564003104) internal successors, (3585), 1289 states have internal predecessors, (3585), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:35,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1290 states to 1290 states and 3585 transitions. [2021-06-05 20:34:35,015 INFO L78 Accepts]: Start accepts. Automaton has 1290 states and 3585 transitions. Word has length 26 [2021-06-05 20:34:35,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:34:35,016 INFO L482 AbstractCegarLoop]: Abstraction has 1290 states and 3585 transitions. [2021-06-05 20:34:35,016 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:35,016 INFO L276 IsEmpty]: Start isEmpty. Operand 1290 states and 3585 transitions. [2021-06-05 20:34:35,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:34:35,017 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:34:35,017 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:34:35,017 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable232 [2021-06-05 20:34:35,017 INFO L430 AbstractCegarLoop]: === Iteration 234 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:34:35,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:34:35,017 INFO L82 PathProgramCache]: Analyzing trace with hash -1417263762, now seen corresponding path program 232 times [2021-06-05 20:34:35,017 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:34:35,017 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [372545394] [2021-06-05 20:34:35,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:34:35,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:34:35,079 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:34:35,079 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:34:35,079 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [372545394] [2021-06-05 20:34:35,079 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [372545394] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:34:35,079 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:34:35,079 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 20:34:35,079 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [491239583] [2021-06-05 20:34:35,079 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 20:34:35,079 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:34:35,079 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 20:34:35,079 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:35,080 INFO L87 Difference]: Start difference. First operand 1290 states and 3585 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:35,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:34:35,238 INFO L93 Difference]: Finished difference Result 1427 states and 3933 transitions. [2021-06-05 20:34:35,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 20:34:35,238 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:34:35,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:34:35,239 INFO L225 Difference]: With dead ends: 1427 [2021-06-05 20:34:35,239 INFO L226 Difference]: Without dead ends: 1341 [2021-06-05 20:34:35,239 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 54.6ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:35,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1341 states. [2021-06-05 20:34:35,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1341 to 1293. [2021-06-05 20:34:35,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1293 states, 1292 states have (on average 2.778637770897833) internal successors, (3590), 1292 states have internal predecessors, (3590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:35,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1293 states to 1293 states and 3590 transitions. [2021-06-05 20:34:35,252 INFO L78 Accepts]: Start accepts. Automaton has 1293 states and 3590 transitions. Word has length 26 [2021-06-05 20:34:35,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:34:35,252 INFO L482 AbstractCegarLoop]: Abstraction has 1293 states and 3590 transitions. [2021-06-05 20:34:35,252 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:35,252 INFO L276 IsEmpty]: Start isEmpty. Operand 1293 states and 3590 transitions. [2021-06-05 20:34:35,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:34:35,253 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:34:35,253 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:34:35,253 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable233 [2021-06-05 20:34:35,253 INFO L430 AbstractCegarLoop]: === Iteration 235 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:34:35,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:34:35,253 INFO L82 PathProgramCache]: Analyzing trace with hash -1507023412, now seen corresponding path program 233 times [2021-06-05 20:34:35,254 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:34:35,254 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1262454142] [2021-06-05 20:34:35,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:34:35,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:34:35,317 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:34:35,317 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:34:35,317 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1262454142] [2021-06-05 20:34:35,317 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1262454142] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:34:35,317 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:34:35,317 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 20:34:35,317 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [699624562] [2021-06-05 20:34:35,318 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 20:34:35,318 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:34:35,318 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 20:34:35,318 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:35,318 INFO L87 Difference]: Start difference. First operand 1293 states and 3590 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:35,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:34:35,472 INFO L93 Difference]: Finished difference Result 1430 states and 3930 transitions. [2021-06-05 20:34:35,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 20:34:35,473 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:34:35,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:34:35,474 INFO L225 Difference]: With dead ends: 1430 [2021-06-05 20:34:35,474 INFO L226 Difference]: Without dead ends: 1298 [2021-06-05 20:34:35,474 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 53.9ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:35,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1298 states. [2021-06-05 20:34:35,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1298 to 1201. [2021-06-05 20:34:35,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1201 states, 1200 states have (on average 2.7925) internal successors, (3351), 1200 states have internal predecessors, (3351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:35,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1201 states to 1201 states and 3351 transitions. [2021-06-05 20:34:35,486 INFO L78 Accepts]: Start accepts. Automaton has 1201 states and 3351 transitions. Word has length 26 [2021-06-05 20:34:35,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:34:35,486 INFO L482 AbstractCegarLoop]: Abstraction has 1201 states and 3351 transitions. [2021-06-05 20:34:35,486 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:35,486 INFO L276 IsEmpty]: Start isEmpty. Operand 1201 states and 3351 transitions. [2021-06-05 20:34:35,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:34:35,487 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:34:35,487 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:34:35,487 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable234 [2021-06-05 20:34:35,487 INFO L430 AbstractCegarLoop]: === Iteration 236 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:34:35,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:34:35,488 INFO L82 PathProgramCache]: Analyzing trace with hash -87761518, now seen corresponding path program 234 times [2021-06-05 20:34:35,488 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:34:35,488 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1335269345] [2021-06-05 20:34:35,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:34:35,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:34:35,534 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:34:35,534 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:34:35,534 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1335269345] [2021-06-05 20:34:35,534 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1335269345] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:34:35,534 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:34:35,534 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:34:35,534 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1810375600] [2021-06-05 20:34:35,534 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-05 20:34:35,534 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:34:35,534 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-05 20:34:35,534 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:34:35,534 INFO L87 Difference]: Start difference. First operand 1201 states and 3351 transitions. Second operand has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:35,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:34:35,653 INFO L93 Difference]: Finished difference Result 1516 states and 4163 transitions. [2021-06-05 20:34:35,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-05 20:34:35,653 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:34:35,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:34:35,654 INFO L225 Difference]: With dead ends: 1516 [2021-06-05 20:34:35,654 INFO L226 Difference]: Without dead ends: 1341 [2021-06-05 20:34:35,654 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 38.5ms TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:34:35,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1341 states. [2021-06-05 20:34:35,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1341 to 1275. [2021-06-05 20:34:35,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1275 states, 1274 states have (on average 2.770800627943485) internal successors, (3530), 1274 states have internal predecessors, (3530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:35,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1275 states to 1275 states and 3530 transitions. [2021-06-05 20:34:35,667 INFO L78 Accepts]: Start accepts. Automaton has 1275 states and 3530 transitions. Word has length 26 [2021-06-05 20:34:35,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:34:35,667 INFO L482 AbstractCegarLoop]: Abstraction has 1275 states and 3530 transitions. [2021-06-05 20:34:35,667 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:35,667 INFO L276 IsEmpty]: Start isEmpty. Operand 1275 states and 3530 transitions. [2021-06-05 20:34:35,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:34:35,668 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:34:35,668 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:34:35,668 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable235 [2021-06-05 20:34:35,668 INFO L430 AbstractCegarLoop]: === Iteration 237 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:34:35,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:34:35,668 INFO L82 PathProgramCache]: Analyzing trace with hash -947346512, now seen corresponding path program 235 times [2021-06-05 20:34:35,668 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:34:35,668 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1903626669] [2021-06-05 20:34:35,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:34:35,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:34:35,727 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:34:35,727 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:34:35,727 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1903626669] [2021-06-05 20:34:35,727 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1903626669] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:34:35,727 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:34:35,727 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 20:34:35,727 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1897531055] [2021-06-05 20:34:35,728 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 20:34:35,728 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:34:35,728 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 20:34:35,728 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:35,728 INFO L87 Difference]: Start difference. First operand 1275 states and 3530 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:35,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:34:35,878 INFO L93 Difference]: Finished difference Result 1474 states and 4020 transitions. [2021-06-05 20:34:35,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 20:34:35,878 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:34:35,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:34:35,879 INFO L225 Difference]: With dead ends: 1474 [2021-06-05 20:34:35,879 INFO L226 Difference]: Without dead ends: 1337 [2021-06-05 20:34:35,880 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 51.5ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:35,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1337 states. [2021-06-05 20:34:35,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1337 to 1249. [2021-06-05 20:34:35,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1249 states, 1248 states have (on average 2.769230769230769) internal successors, (3456), 1248 states have internal predecessors, (3456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:35,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1249 states to 1249 states and 3456 transitions. [2021-06-05 20:34:35,891 INFO L78 Accepts]: Start accepts. Automaton has 1249 states and 3456 transitions. Word has length 26 [2021-06-05 20:34:35,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:34:35,891 INFO L482 AbstractCegarLoop]: Abstraction has 1249 states and 3456 transitions. [2021-06-05 20:34:35,891 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:35,891 INFO L276 IsEmpty]: Start isEmpty. Operand 1249 states and 3456 transitions. [2021-06-05 20:34:35,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:34:35,892 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:34:35,893 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:34:35,893 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable236 [2021-06-05 20:34:35,893 INFO L430 AbstractCegarLoop]: === Iteration 238 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:34:35,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:34:35,893 INFO L82 PathProgramCache]: Analyzing trace with hash -1849816364, now seen corresponding path program 236 times [2021-06-05 20:34:35,893 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:34:35,893 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [951514711] [2021-06-05 20:34:35,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:34:35,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:34:35,938 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:34:35,939 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:34:35,939 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [951514711] [2021-06-05 20:34:35,939 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [951514711] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:34:35,939 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:34:35,939 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:34:35,939 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [282453781] [2021-06-05 20:34:35,939 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-05 20:34:35,939 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:34:35,939 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-05 20:34:35,939 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:34:35,939 INFO L87 Difference]: Start difference. First operand 1249 states and 3456 transitions. Second operand has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:36,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:34:36,060 INFO L93 Difference]: Finished difference Result 1527 states and 4192 transitions. [2021-06-05 20:34:36,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-05 20:34:36,060 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:34:36,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:34:36,061 INFO L225 Difference]: With dead ends: 1527 [2021-06-05 20:34:36,061 INFO L226 Difference]: Without dead ends: 1416 [2021-06-05 20:34:36,062 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 38.7ms TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:34:36,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1416 states. [2021-06-05 20:34:36,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1416 to 1255. [2021-06-05 20:34:36,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1255 states, 1254 states have (on average 2.7639553429027113) internal successors, (3466), 1254 states have internal predecessors, (3466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:36,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1255 states to 1255 states and 3466 transitions. [2021-06-05 20:34:36,074 INFO L78 Accepts]: Start accepts. Automaton has 1255 states and 3466 transitions. Word has length 26 [2021-06-05 20:34:36,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:34:36,074 INFO L482 AbstractCegarLoop]: Abstraction has 1255 states and 3466 transitions. [2021-06-05 20:34:36,074 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:36,074 INFO L276 IsEmpty]: Start isEmpty. Operand 1255 states and 3466 transitions. [2021-06-05 20:34:36,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:34:36,075 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:34:36,075 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:34:36,075 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable237 [2021-06-05 20:34:36,075 INFO L430 AbstractCegarLoop]: === Iteration 239 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:34:36,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:34:36,075 INFO L82 PathProgramCache]: Analyzing trace with hash 1536899796, now seen corresponding path program 237 times [2021-06-05 20:34:36,076 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:34:36,076 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1095224416] [2021-06-05 20:34:36,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:34:36,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:34:36,130 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:34:36,130 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:34:36,130 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1095224416] [2021-06-05 20:34:36,130 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1095224416] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:34:36,130 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:34:36,130 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 20:34:36,130 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1778222401] [2021-06-05 20:34:36,130 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 20:34:36,131 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:34:36,131 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 20:34:36,131 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:36,131 INFO L87 Difference]: Start difference. First operand 1255 states and 3466 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:36,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:34:36,285 INFO L93 Difference]: Finished difference Result 1417 states and 3868 transitions. [2021-06-05 20:34:36,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 20:34:36,285 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:34:36,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:34:36,287 INFO L225 Difference]: With dead ends: 1417 [2021-06-05 20:34:36,287 INFO L226 Difference]: Without dead ends: 1324 [2021-06-05 20:34:36,287 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 47.6ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:36,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1324 states. [2021-06-05 20:34:36,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1324 to 1258. [2021-06-05 20:34:36,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1258 states, 1257 states have (on average 2.7661097852028638) internal successors, (3477), 1257 states have internal predecessors, (3477), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:36,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1258 states to 1258 states and 3477 transitions. [2021-06-05 20:34:36,299 INFO L78 Accepts]: Start accepts. Automaton has 1258 states and 3477 transitions. Word has length 26 [2021-06-05 20:34:36,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:34:36,299 INFO L482 AbstractCegarLoop]: Abstraction has 1258 states and 3477 transitions. [2021-06-05 20:34:36,299 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:36,299 INFO L276 IsEmpty]: Start isEmpty. Operand 1258 states and 3477 transitions. [2021-06-05 20:34:36,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:34:36,300 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:34:36,300 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:34:36,300 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable238 [2021-06-05 20:34:36,300 INFO L430 AbstractCegarLoop]: === Iteration 240 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:34:36,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:34:36,300 INFO L82 PathProgramCache]: Analyzing trace with hash -1888622892, now seen corresponding path program 238 times [2021-06-05 20:34:36,300 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:34:36,300 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1577434965] [2021-06-05 20:34:36,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:34:36,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:34:36,366 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:34:36,366 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:34:36,366 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1577434965] [2021-06-05 20:34:36,366 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1577434965] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:34:36,366 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:34:36,366 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 20:34:36,366 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1517003913] [2021-06-05 20:34:36,366 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 20:34:36,366 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:34:36,367 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 20:34:36,367 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:36,367 INFO L87 Difference]: Start difference. First operand 1258 states and 3477 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:36,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:34:36,520 INFO L93 Difference]: Finished difference Result 1452 states and 3941 transitions. [2021-06-05 20:34:36,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 20:34:36,520 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:34:36,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:34:36,522 INFO L225 Difference]: With dead ends: 1452 [2021-06-05 20:34:36,522 INFO L226 Difference]: Without dead ends: 1334 [2021-06-05 20:34:36,522 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 53.6ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:36,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1334 states. [2021-06-05 20:34:36,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1334 to 1252. [2021-06-05 20:34:36,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1252 states, 1251 states have (on average 2.7569944044764187) internal successors, (3449), 1251 states have internal predecessors, (3449), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:36,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1252 states to 1252 states and 3449 transitions. [2021-06-05 20:34:36,533 INFO L78 Accepts]: Start accepts. Automaton has 1252 states and 3449 transitions. Word has length 26 [2021-06-05 20:34:36,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:34:36,534 INFO L482 AbstractCegarLoop]: Abstraction has 1252 states and 3449 transitions. [2021-06-05 20:34:36,534 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:36,534 INFO L276 IsEmpty]: Start isEmpty. Operand 1252 states and 3449 transitions. [2021-06-05 20:34:36,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:34:36,535 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:34:36,535 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:34:36,535 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable239 [2021-06-05 20:34:36,535 INFO L430 AbstractCegarLoop]: === Iteration 241 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:34:36,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:34:36,535 INFO L82 PathProgramCache]: Analyzing trace with hash -1837491534, now seen corresponding path program 239 times [2021-06-05 20:34:36,535 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:34:36,535 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1865604015] [2021-06-05 20:34:36,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:34:36,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:34:36,599 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:34:36,599 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:34:36,599 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1865604015] [2021-06-05 20:34:36,599 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1865604015] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:34:36,599 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:34:36,599 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 20:34:36,599 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [64507951] [2021-06-05 20:34:36,599 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 20:34:36,600 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:34:36,600 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 20:34:36,600 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:36,600 INFO L87 Difference]: Start difference. First operand 1252 states and 3449 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:36,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:34:36,754 INFO L93 Difference]: Finished difference Result 1528 states and 4182 transitions. [2021-06-05 20:34:36,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 20:34:36,754 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:34:36,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:34:36,755 INFO L225 Difference]: With dead ends: 1528 [2021-06-05 20:34:36,755 INFO L226 Difference]: Without dead ends: 1420 [2021-06-05 20:34:36,755 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 50.0ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:36,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1420 states. [2021-06-05 20:34:36,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1420 to 1249. [2021-06-05 20:34:36,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1249 states, 1248 states have (on average 2.7572115384615383) internal successors, (3441), 1248 states have internal predecessors, (3441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:36,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1249 states to 1249 states and 3441 transitions. [2021-06-05 20:34:36,768 INFO L78 Accepts]: Start accepts. Automaton has 1249 states and 3441 transitions. Word has length 26 [2021-06-05 20:34:36,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:34:36,768 INFO L482 AbstractCegarLoop]: Abstraction has 1249 states and 3441 transitions. [2021-06-05 20:34:36,768 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:36,768 INFO L276 IsEmpty]: Start isEmpty. Operand 1249 states and 3441 transitions. [2021-06-05 20:34:36,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:34:36,769 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:34:36,769 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:34:36,769 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable240 [2021-06-05 20:34:36,769 INFO L430 AbstractCegarLoop]: === Iteration 242 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:34:36,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:34:36,769 INFO L82 PathProgramCache]: Analyzing trace with hash 1609385358, now seen corresponding path program 240 times [2021-06-05 20:34:36,769 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:34:36,769 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [843637365] [2021-06-05 20:34:36,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:34:36,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:34:36,817 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:34:36,818 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:34:36,818 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [843637365] [2021-06-05 20:34:36,818 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [843637365] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:34:36,818 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:34:36,818 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:34:36,818 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1128181872] [2021-06-05 20:34:36,818 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-05 20:34:36,818 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:34:36,818 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-05 20:34:36,818 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:34:36,818 INFO L87 Difference]: Start difference. First operand 1249 states and 3441 transitions. Second operand has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:36,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:34:36,942 INFO L93 Difference]: Finished difference Result 1511 states and 4128 transitions. [2021-06-05 20:34:36,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-05 20:34:36,942 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:34:36,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:34:36,944 INFO L225 Difference]: With dead ends: 1511 [2021-06-05 20:34:36,944 INFO L226 Difference]: Without dead ends: 1418 [2021-06-05 20:34:36,944 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 38.9ms TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:34:36,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1418 states. [2021-06-05 20:34:36,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1418 to 1275. [2021-06-05 20:34:36,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1275 states, 1274 states have (on average 2.760596546310832) internal successors, (3517), 1274 states have internal predecessors, (3517), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:36,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1275 states to 1275 states and 3517 transitions. [2021-06-05 20:34:36,956 INFO L78 Accepts]: Start accepts. Automaton has 1275 states and 3517 transitions. Word has length 26 [2021-06-05 20:34:36,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:34:36,956 INFO L482 AbstractCegarLoop]: Abstraction has 1275 states and 3517 transitions. [2021-06-05 20:34:36,956 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:36,956 INFO L276 IsEmpty]: Start isEmpty. Operand 1275 states and 3517 transitions. [2021-06-05 20:34:36,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:34:36,957 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:34:36,957 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:34:36,957 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable241 [2021-06-05 20:34:36,957 INFO L430 AbstractCegarLoop]: === Iteration 243 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:34:36,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:34:36,958 INFO L82 PathProgramCache]: Analyzing trace with hash -1816137330, now seen corresponding path program 241 times [2021-06-05 20:34:36,958 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:34:36,958 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [792328705] [2021-06-05 20:34:36,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:34:36,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:34:37,012 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:34:37,012 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:34:37,012 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [792328705] [2021-06-05 20:34:37,012 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [792328705] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:34:37,012 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:34:37,012 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 20:34:37,012 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [388956734] [2021-06-05 20:34:37,013 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 20:34:37,013 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:34:37,013 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 20:34:37,013 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:37,013 INFO L87 Difference]: Start difference. First operand 1275 states and 3517 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:37,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:34:37,166 INFO L93 Difference]: Finished difference Result 1582 states and 4293 transitions. [2021-06-05 20:34:37,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 20:34:37,166 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:34:37,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:34:37,167 INFO L225 Difference]: With dead ends: 1582 [2021-06-05 20:34:37,167 INFO L226 Difference]: Without dead ends: 1369 [2021-06-05 20:34:37,167 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 47.6ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:37,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1369 states. [2021-06-05 20:34:37,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1369 to 1275. [2021-06-05 20:34:37,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1275 states, 1274 states have (on average 2.740188383045526) internal successors, (3491), 1274 states have internal predecessors, (3491), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:37,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1275 states to 1275 states and 3491 transitions. [2021-06-05 20:34:37,179 INFO L78 Accepts]: Start accepts. Automaton has 1275 states and 3491 transitions. Word has length 26 [2021-06-05 20:34:37,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:34:37,179 INFO L482 AbstractCegarLoop]: Abstraction has 1275 states and 3491 transitions. [2021-06-05 20:34:37,180 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:37,180 INFO L276 IsEmpty]: Start isEmpty. Operand 1275 states and 3491 transitions. [2021-06-05 20:34:37,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:34:37,181 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:34:37,181 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:34:37,181 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable242 [2021-06-05 20:34:37,181 INFO L430 AbstractCegarLoop]: === Iteration 244 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:34:37,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:34:37,181 INFO L82 PathProgramCache]: Analyzing trace with hash 71966128, now seen corresponding path program 242 times [2021-06-05 20:34:37,181 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:34:37,181 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1440044687] [2021-06-05 20:34:37,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:34:37,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:34:37,242 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:34:37,242 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:34:37,242 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1440044687] [2021-06-05 20:34:37,242 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1440044687] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:34:37,242 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:34:37,242 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 20:34:37,242 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [910016374] [2021-06-05 20:34:37,242 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 20:34:37,242 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:34:37,243 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 20:34:37,243 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:37,243 INFO L87 Difference]: Start difference. First operand 1275 states and 3491 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:37,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:34:37,395 INFO L93 Difference]: Finished difference Result 1460 states and 3935 transitions. [2021-06-05 20:34:37,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 20:34:37,396 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:34:37,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:34:37,397 INFO L225 Difference]: With dead ends: 1460 [2021-06-05 20:34:37,397 INFO L226 Difference]: Without dead ends: 1367 [2021-06-05 20:34:37,397 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 54.2ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:37,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1367 states. [2021-06-05 20:34:37,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1367 to 1275. [2021-06-05 20:34:37,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1275 states, 1274 states have (on average 2.7370486656200943) internal successors, (3487), 1274 states have internal predecessors, (3487), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:37,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1275 states to 1275 states and 3487 transitions. [2021-06-05 20:34:37,414 INFO L78 Accepts]: Start accepts. Automaton has 1275 states and 3487 transitions. Word has length 26 [2021-06-05 20:34:37,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:34:37,414 INFO L482 AbstractCegarLoop]: Abstraction has 1275 states and 3487 transitions. [2021-06-05 20:34:37,414 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:37,414 INFO L276 IsEmpty]: Start isEmpty. Operand 1275 states and 3487 transitions. [2021-06-05 20:34:37,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:34:37,415 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:34:37,415 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:34:37,415 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable243 [2021-06-05 20:34:37,415 INFO L430 AbstractCegarLoop]: === Iteration 245 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:34:37,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:34:37,416 INFO L82 PathProgramCache]: Analyzing trace with hash 941410736, now seen corresponding path program 243 times [2021-06-05 20:34:37,416 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:34:37,416 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1423551260] [2021-06-05 20:34:37,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:34:37,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:34:37,470 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:34:37,470 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:34:37,470 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1423551260] [2021-06-05 20:34:37,470 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1423551260] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:34:37,470 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:34:37,470 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 20:34:37,471 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1005390133] [2021-06-05 20:34:37,471 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 20:34:37,471 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:34:37,471 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 20:34:37,471 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:37,471 INFO L87 Difference]: Start difference. First operand 1275 states and 3487 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:37,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:34:37,630 INFO L93 Difference]: Finished difference Result 1471 states and 3964 transitions. [2021-06-05 20:34:37,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 20:34:37,630 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:34:37,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:34:37,631 INFO L225 Difference]: With dead ends: 1471 [2021-06-05 20:34:37,631 INFO L226 Difference]: Without dead ends: 1362 [2021-06-05 20:34:37,631 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 47.6ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:37,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1362 states. [2021-06-05 20:34:37,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1362 to 1290. [2021-06-05 20:34:37,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1290 states, 1289 states have (on average 2.7331264546159812) internal successors, (3523), 1289 states have internal predecessors, (3523), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:37,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1290 states to 1290 states and 3523 transitions. [2021-06-05 20:34:37,644 INFO L78 Accepts]: Start accepts. Automaton has 1290 states and 3523 transitions. Word has length 26 [2021-06-05 20:34:37,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:34:37,644 INFO L482 AbstractCegarLoop]: Abstraction has 1290 states and 3523 transitions. [2021-06-05 20:34:37,644 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:37,644 INFO L276 IsEmpty]: Start isEmpty. Operand 1290 states and 3523 transitions. [2021-06-05 20:34:37,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:34:37,645 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:34:37,645 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:34:37,645 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable244 [2021-06-05 20:34:37,645 INFO L430 AbstractCegarLoop]: === Iteration 246 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:34:37,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:34:37,645 INFO L82 PathProgramCache]: Analyzing trace with hash -1182487510, now seen corresponding path program 244 times [2021-06-05 20:34:37,645 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:34:37,645 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1484283716] [2021-06-05 20:34:37,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:34:37,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:34:37,700 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:34:37,700 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:34:37,700 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1484283716] [2021-06-05 20:34:37,700 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1484283716] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:34:37,700 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:34:37,700 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 20:34:37,700 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1169020543] [2021-06-05 20:34:37,700 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 20:34:37,700 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:34:37,701 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 20:34:37,701 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:37,701 INFO L87 Difference]: Start difference. First operand 1290 states and 3523 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:37,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:34:37,858 INFO L93 Difference]: Finished difference Result 1456 states and 3922 transitions. [2021-06-05 20:34:37,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 20:34:37,858 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:34:37,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:34:37,859 INFO L225 Difference]: With dead ends: 1456 [2021-06-05 20:34:37,859 INFO L226 Difference]: Without dead ends: 1294 [2021-06-05 20:34:37,859 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 47.8ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:37,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1294 states. [2021-06-05 20:34:37,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1294 to 1245. [2021-06-05 20:34:37,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1245 states, 1244 states have (on average 2.741961414790997) internal successors, (3411), 1244 states have internal predecessors, (3411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:37,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1245 states to 1245 states and 3411 transitions. [2021-06-05 20:34:37,871 INFO L78 Accepts]: Start accepts. Automaton has 1245 states and 3411 transitions. Word has length 26 [2021-06-05 20:34:37,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:34:37,871 INFO L482 AbstractCegarLoop]: Abstraction has 1245 states and 3411 transitions. [2021-06-05 20:34:37,871 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:37,871 INFO L276 IsEmpty]: Start isEmpty. Operand 1245 states and 3411 transitions. [2021-06-05 20:34:37,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:34:37,872 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:34:37,873 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:34:37,873 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable245 [2021-06-05 20:34:37,873 INFO L430 AbstractCegarLoop]: === Iteration 247 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:34:37,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:34:37,873 INFO L82 PathProgramCache]: Analyzing trace with hash -2078272624, now seen corresponding path program 245 times [2021-06-05 20:34:37,873 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:34:37,873 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [949646800] [2021-06-05 20:34:37,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:34:37,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:34:37,925 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:34:37,926 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:34:37,926 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [949646800] [2021-06-05 20:34:37,926 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [949646800] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:34:37,926 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:34:37,926 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:34:37,926 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1626414559] [2021-06-05 20:34:37,926 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-05 20:34:37,926 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:34:37,926 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-05 20:34:37,926 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:34:37,926 INFO L87 Difference]: Start difference. First operand 1245 states and 3411 transitions. Second operand has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:38,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:34:38,052 INFO L93 Difference]: Finished difference Result 1475 states and 3997 transitions. [2021-06-05 20:34:38,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-05 20:34:38,053 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:34:38,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:34:38,054 INFO L225 Difference]: With dead ends: 1475 [2021-06-05 20:34:38,054 INFO L226 Difference]: Without dead ends: 1320 [2021-06-05 20:34:38,054 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 39.5ms TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:34:38,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1320 states. [2021-06-05 20:34:38,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1320 to 1284. [2021-06-05 20:34:38,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1284 states, 1283 states have (on average 2.7217459080280593) internal successors, (3492), 1283 states have internal predecessors, (3492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:38,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1284 states to 1284 states and 3492 transitions. [2021-06-05 20:34:38,066 INFO L78 Accepts]: Start accepts. Automaton has 1284 states and 3492 transitions. Word has length 26 [2021-06-05 20:34:38,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:34:38,066 INFO L482 AbstractCegarLoop]: Abstraction has 1284 states and 3492 transitions. [2021-06-05 20:34:38,066 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:38,066 INFO L276 IsEmpty]: Start isEmpty. Operand 1284 states and 3492 transitions. [2021-06-05 20:34:38,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:34:38,067 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:34:38,067 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:34:38,067 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable246 [2021-06-05 20:34:38,067 INFO L430 AbstractCegarLoop]: === Iteration 248 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:34:38,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:34:38,068 INFO L82 PathProgramCache]: Analyzing trace with hash 1357109678, now seen corresponding path program 246 times [2021-06-05 20:34:38,068 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:34:38,068 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1900135757] [2021-06-05 20:34:38,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:34:38,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:34:38,124 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:34:38,124 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:34:38,124 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1900135757] [2021-06-05 20:34:38,124 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1900135757] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:34:38,124 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:34:38,124 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 20:34:38,124 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [990121971] [2021-06-05 20:34:38,124 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 20:34:38,124 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:34:38,125 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 20:34:38,125 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:38,125 INFO L87 Difference]: Start difference. First operand 1284 states and 3492 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:38,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:34:38,278 INFO L93 Difference]: Finished difference Result 1451 states and 3899 transitions. [2021-06-05 20:34:38,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 20:34:38,279 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:34:38,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:34:38,280 INFO L225 Difference]: With dead ends: 1451 [2021-06-05 20:34:38,280 INFO L226 Difference]: Without dead ends: 1310 [2021-06-05 20:34:38,280 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 48.0ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:38,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1310 states. [2021-06-05 20:34:38,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1310 to 1258. [2021-06-05 20:34:38,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1258 states, 1257 states have (on average 2.720763723150358) internal successors, (3420), 1257 states have internal predecessors, (3420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:38,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1258 states to 1258 states and 3420 transitions. [2021-06-05 20:34:38,292 INFO L78 Accepts]: Start accepts. Automaton has 1258 states and 3420 transitions. Word has length 26 [2021-06-05 20:34:38,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:34:38,292 INFO L482 AbstractCegarLoop]: Abstraction has 1258 states and 3420 transitions. [2021-06-05 20:34:38,292 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:38,292 INFO L276 IsEmpty]: Start isEmpty. Operand 1258 states and 3420 transitions. [2021-06-05 20:34:38,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:34:38,293 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:34:38,293 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:34:38,293 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable247 [2021-06-05 20:34:38,293 INFO L430 AbstractCegarLoop]: === Iteration 249 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:34:38,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:34:38,293 INFO L82 PathProgramCache]: Analyzing trace with hash 234837774, now seen corresponding path program 247 times [2021-06-05 20:34:38,294 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:34:38,294 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1872157786] [2021-06-05 20:34:38,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:34:38,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:34:38,348 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:34:38,348 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:34:38,348 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1872157786] [2021-06-05 20:34:38,348 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1872157786] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:34:38,348 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:34:38,349 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 20:34:38,349 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1744507393] [2021-06-05 20:34:38,349 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 20:34:38,349 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:34:38,349 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 20:34:38,349 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:38,349 INFO L87 Difference]: Start difference. First operand 1258 states and 3420 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:38,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:34:38,514 INFO L93 Difference]: Finished difference Result 1416 states and 3802 transitions. [2021-06-05 20:34:38,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 20:34:38,514 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:34:38,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:34:38,515 INFO L225 Difference]: With dead ends: 1416 [2021-06-05 20:34:38,515 INFO L226 Difference]: Without dead ends: 1335 [2021-06-05 20:34:38,515 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 47.8ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:38,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1335 states. [2021-06-05 20:34:38,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1335 to 1260. [2021-06-05 20:34:38,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1260 states, 1259 states have (on average 2.722001588562351) internal successors, (3427), 1259 states have internal predecessors, (3427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:38,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1260 states to 1260 states and 3427 transitions. [2021-06-05 20:34:38,527 INFO L78 Accepts]: Start accepts. Automaton has 1260 states and 3427 transitions. Word has length 26 [2021-06-05 20:34:38,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:34:38,527 INFO L482 AbstractCegarLoop]: Abstraction has 1260 states and 3427 transitions. [2021-06-05 20:34:38,527 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:38,527 INFO L276 IsEmpty]: Start isEmpty. Operand 1260 states and 3427 transitions. [2021-06-05 20:34:38,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:34:38,528 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:34:38,528 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:34:38,529 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable248 [2021-06-05 20:34:38,529 INFO L430 AbstractCegarLoop]: === Iteration 250 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:34:38,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:34:38,529 INFO L82 PathProgramCache]: Analyzing trace with hash 1104282382, now seen corresponding path program 248 times [2021-06-05 20:34:38,529 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:34:38,529 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1320867728] [2021-06-05 20:34:38,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:34:38,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:34:38,584 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:34:38,584 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:34:38,584 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1320867728] [2021-06-05 20:34:38,584 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1320867728] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:34:38,584 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:34:38,584 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 20:34:38,584 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1539893048] [2021-06-05 20:34:38,584 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 20:34:38,585 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:34:38,585 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 20:34:38,585 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:38,585 INFO L87 Difference]: Start difference. First operand 1260 states and 3427 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:38,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:34:38,742 INFO L93 Difference]: Finished difference Result 1422 states and 3809 transitions. [2021-06-05 20:34:38,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 20:34:38,743 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:34:38,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:34:38,744 INFO L225 Difference]: With dead ends: 1422 [2021-06-05 20:34:38,744 INFO L226 Difference]: Without dead ends: 1302 [2021-06-05 20:34:38,744 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 48.3ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:38,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1302 states. [2021-06-05 20:34:38,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1302 to 1256. [2021-06-05 20:34:38,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1256 states, 1255 states have (on average 2.7203187250996015) internal successors, (3414), 1255 states have internal predecessors, (3414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:38,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1256 states to 1256 states and 3414 transitions. [2021-06-05 20:34:38,756 INFO L78 Accepts]: Start accepts. Automaton has 1256 states and 3414 transitions. Word has length 26 [2021-06-05 20:34:38,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:34:38,756 INFO L482 AbstractCegarLoop]: Abstraction has 1256 states and 3414 transitions. [2021-06-05 20:34:38,756 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:38,756 INFO L276 IsEmpty]: Start isEmpty. Operand 1256 states and 3414 transitions. [2021-06-05 20:34:38,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:34:38,757 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:34:38,757 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:34:38,757 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable249 [2021-06-05 20:34:38,757 INFO L430 AbstractCegarLoop]: === Iteration 251 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:34:38,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:34:38,757 INFO L82 PathProgramCache]: Analyzing trace with hash -364428848, now seen corresponding path program 249 times [2021-06-05 20:34:38,757 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:34:38,757 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1283387403] [2021-06-05 20:34:38,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:34:38,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:34:38,812 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:34:38,812 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:34:38,812 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1283387403] [2021-06-05 20:34:38,812 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1283387403] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:34:38,812 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:34:38,812 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 20:34:38,812 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2102377041] [2021-06-05 20:34:38,812 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 20:34:38,813 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:34:38,813 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 20:34:38,813 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:38,813 INFO L87 Difference]: Start difference. First operand 1256 states and 3414 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:38,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:34:38,970 INFO L93 Difference]: Finished difference Result 1383 states and 3716 transitions. [2021-06-05 20:34:38,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 20:34:38,971 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:34:38,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:34:38,972 INFO L225 Difference]: With dead ends: 1383 [2021-06-05 20:34:38,972 INFO L226 Difference]: Without dead ends: 1292 [2021-06-05 20:34:38,972 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 48.0ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:38,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1292 states. [2021-06-05 20:34:38,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1292 to 1244. [2021-06-05 20:34:38,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1244 states, 1243 states have (on average 2.7280772325020113) internal successors, (3391), 1243 states have internal predecessors, (3391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:38,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1244 states to 1244 states and 3391 transitions. [2021-06-05 20:34:38,984 INFO L78 Accepts]: Start accepts. Automaton has 1244 states and 3391 transitions. Word has length 26 [2021-06-05 20:34:38,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:34:38,984 INFO L482 AbstractCegarLoop]: Abstraction has 1244 states and 3391 transitions. [2021-06-05 20:34:38,984 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:38,984 INFO L276 IsEmpty]: Start isEmpty. Operand 1244 states and 3391 transitions. [2021-06-05 20:34:38,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:34:38,985 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:34:38,985 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:34:38,986 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable250 [2021-06-05 20:34:38,986 INFO L430 AbstractCegarLoop]: === Iteration 252 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:34:38,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:34:38,986 INFO L82 PathProgramCache]: Analyzing trace with hash 1042734962, now seen corresponding path program 250 times [2021-06-05 20:34:38,986 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:34:38,986 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [239383039] [2021-06-05 20:34:38,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:34:38,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:34:39,033 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:34:39,034 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:34:39,034 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [239383039] [2021-06-05 20:34:39,034 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [239383039] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:34:39,034 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:34:39,034 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:34:39,034 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1058800651] [2021-06-05 20:34:39,034 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-05 20:34:39,034 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:34:39,034 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-05 20:34:39,034 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:34:39,034 INFO L87 Difference]: Start difference. First operand 1244 states and 3391 transitions. Second operand has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:39,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:34:39,157 INFO L93 Difference]: Finished difference Result 1483 states and 4005 transitions. [2021-06-05 20:34:39,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-05 20:34:39,158 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:34:39,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:34:39,159 INFO L225 Difference]: With dead ends: 1483 [2021-06-05 20:34:39,159 INFO L226 Difference]: Without dead ends: 1331 [2021-06-05 20:34:39,159 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 39.0ms TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:34:39,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1331 states. [2021-06-05 20:34:39,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1331 to 1273. [2021-06-05 20:34:39,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1273 states, 1272 states have (on average 2.7114779874213837) internal successors, (3449), 1272 states have internal predecessors, (3449), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:39,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1273 states to 1273 states and 3449 transitions. [2021-06-05 20:34:39,170 INFO L78 Accepts]: Start accepts. Automaton has 1273 states and 3449 transitions. Word has length 26 [2021-06-05 20:34:39,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:34:39,170 INFO L482 AbstractCegarLoop]: Abstraction has 1273 states and 3449 transitions. [2021-06-05 20:34:39,170 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:39,171 INFO L276 IsEmpty]: Start isEmpty. Operand 1273 states and 3449 transitions. [2021-06-05 20:34:39,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:34:39,172 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:34:39,172 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:34:39,172 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable251 [2021-06-05 20:34:39,172 INFO L430 AbstractCegarLoop]: === Iteration 253 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:34:39,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:34:39,172 INFO L82 PathProgramCache]: Analyzing trace with hash 183149968, now seen corresponding path program 251 times [2021-06-05 20:34:39,172 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:34:39,172 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2137383209] [2021-06-05 20:34:39,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:34:39,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:34:39,229 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:34:39,230 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:34:39,230 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2137383209] [2021-06-05 20:34:39,230 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2137383209] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:34:39,230 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:34:39,230 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 20:34:39,230 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [23943105] [2021-06-05 20:34:39,230 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 20:34:39,230 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:34:39,230 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 20:34:39,230 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:39,230 INFO L87 Difference]: Start difference. First operand 1273 states and 3449 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:39,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:34:39,393 INFO L93 Difference]: Finished difference Result 1455 states and 3899 transitions. [2021-06-05 20:34:39,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 20:34:39,393 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:34:39,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:34:39,395 INFO L225 Difference]: With dead ends: 1455 [2021-06-05 20:34:39,395 INFO L226 Difference]: Without dead ends: 1330 [2021-06-05 20:34:39,395 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 47.6ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:39,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1330 states. [2021-06-05 20:34:39,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1330 to 1247. [2021-06-05 20:34:39,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1247 states, 1246 states have (on average 2.718298555377207) internal successors, (3387), 1246 states have internal predecessors, (3387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:39,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1247 states to 1247 states and 3387 transitions. [2021-06-05 20:34:39,407 INFO L78 Accepts]: Start accepts. Automaton has 1247 states and 3387 transitions. Word has length 26 [2021-06-05 20:34:39,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:34:39,407 INFO L482 AbstractCegarLoop]: Abstraction has 1247 states and 3387 transitions. [2021-06-05 20:34:39,407 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:39,408 INFO L276 IsEmpty]: Start isEmpty. Operand 1247 states and 3387 transitions. [2021-06-05 20:34:39,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:34:39,409 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:34:39,409 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:34:39,409 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable252 [2021-06-05 20:34:39,409 INFO L430 AbstractCegarLoop]: === Iteration 254 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:34:39,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:34:39,409 INFO L82 PathProgramCache]: Analyzing trace with hash 824926418, now seen corresponding path program 252 times [2021-06-05 20:34:39,409 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:34:39,409 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1102054045] [2021-06-05 20:34:39,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:34:39,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:34:39,466 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:34:39,466 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:34:39,467 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1102054045] [2021-06-05 20:34:39,467 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1102054045] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:34:39,467 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:34:39,467 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 20:34:39,467 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1873216457] [2021-06-05 20:34:39,467 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 20:34:39,467 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:34:39,467 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 20:34:39,467 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:39,467 INFO L87 Difference]: Start difference. First operand 1247 states and 3387 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:39,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:34:39,624 INFO L93 Difference]: Finished difference Result 1414 states and 3792 transitions. [2021-06-05 20:34:39,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 20:34:39,624 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:34:39,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:34:39,625 INFO L225 Difference]: With dead ends: 1414 [2021-06-05 20:34:39,625 INFO L226 Difference]: Without dead ends: 1315 [2021-06-05 20:34:39,625 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 49.3ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:39,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1315 states. [2021-06-05 20:34:39,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1315 to 1253. [2021-06-05 20:34:39,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1253 states, 1252 states have (on average 2.713258785942492) internal successors, (3397), 1252 states have internal predecessors, (3397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:39,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1253 states to 1253 states and 3397 transitions. [2021-06-05 20:34:39,637 INFO L78 Accepts]: Start accepts. Automaton has 1253 states and 3397 transitions. Word has length 26 [2021-06-05 20:34:39,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:34:39,637 INFO L482 AbstractCegarLoop]: Abstraction has 1253 states and 3397 transitions. [2021-06-05 20:34:39,637 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:39,637 INFO L276 IsEmpty]: Start isEmpty. Operand 1253 states and 3397 transitions. [2021-06-05 20:34:39,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:34:39,638 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:34:39,638 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:34:39,638 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable253 [2021-06-05 20:34:39,638 INFO L430 AbstractCegarLoop]: === Iteration 255 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:34:39,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:34:39,639 INFO L82 PathProgramCache]: Analyzing trace with hash -83324718, now seen corresponding path program 253 times [2021-06-05 20:34:39,639 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:34:39,639 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [166046643] [2021-06-05 20:34:39,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:34:39,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:34:39,694 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:34:39,694 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:34:39,694 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [166046643] [2021-06-05 20:34:39,694 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [166046643] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:34:39,695 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:34:39,695 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 20:34:39,695 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [529058002] [2021-06-05 20:34:39,695 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 20:34:39,695 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:34:39,695 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 20:34:39,695 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:39,695 INFO L87 Difference]: Start difference. First operand 1253 states and 3397 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:39,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:34:39,850 INFO L93 Difference]: Finished difference Result 1410 states and 3784 transitions. [2021-06-05 20:34:39,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 20:34:39,850 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:34:39,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:34:39,852 INFO L225 Difference]: With dead ends: 1410 [2021-06-05 20:34:39,852 INFO L226 Difference]: Without dead ends: 1329 [2021-06-05 20:34:39,852 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 48.6ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:39,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1329 states. [2021-06-05 20:34:39,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1329 to 1256. [2021-06-05 20:34:39,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1256 states, 1255 states have (on average 2.7155378486055777) internal successors, (3408), 1255 states have internal predecessors, (3408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:39,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1256 states to 1256 states and 3408 transitions. [2021-06-05 20:34:39,864 INFO L78 Accepts]: Start accepts. Automaton has 1256 states and 3408 transitions. Word has length 26 [2021-06-05 20:34:39,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:34:39,864 INFO L482 AbstractCegarLoop]: Abstraction has 1256 states and 3408 transitions. [2021-06-05 20:34:39,864 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:39,864 INFO L276 IsEmpty]: Start isEmpty. Operand 1256 states and 3408 transitions. [2021-06-05 20:34:39,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:34:39,865 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:34:39,865 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:34:39,865 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable254 [2021-06-05 20:34:39,865 INFO L430 AbstractCegarLoop]: === Iteration 256 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:34:39,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:34:39,865 INFO L82 PathProgramCache]: Analyzing trace with hash 786119890, now seen corresponding path program 254 times [2021-06-05 20:34:39,865 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:34:39,866 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1397997704] [2021-06-05 20:34:39,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:34:39,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:34:39,925 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:34:39,925 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:34:39,925 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1397997704] [2021-06-05 20:34:39,925 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1397997704] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:34:39,925 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:34:39,925 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 20:34:39,925 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1748357097] [2021-06-05 20:34:39,925 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 20:34:39,925 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:34:39,926 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 20:34:39,926 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:39,926 INFO L87 Difference]: Start difference. First operand 1256 states and 3408 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:40,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:34:40,086 INFO L93 Difference]: Finished difference Result 1435 states and 3835 transitions. [2021-06-05 20:34:40,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 20:34:40,086 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:34:40,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:34:40,088 INFO L225 Difference]: With dead ends: 1435 [2021-06-05 20:34:40,088 INFO L226 Difference]: Without dead ends: 1329 [2021-06-05 20:34:40,088 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 48.2ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:40,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1329 states. [2021-06-05 20:34:40,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1329 to 1253. [2021-06-05 20:34:40,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1253 states, 1252 states have (on average 2.713258785942492) internal successors, (3397), 1252 states have internal predecessors, (3397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:40,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1253 states to 1253 states and 3397 transitions. [2021-06-05 20:34:40,100 INFO L78 Accepts]: Start accepts. Automaton has 1253 states and 3397 transitions. Word has length 26 [2021-06-05 20:34:40,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:34:40,100 INFO L482 AbstractCegarLoop]: Abstraction has 1253 states and 3397 transitions. [2021-06-05 20:34:40,100 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:40,100 INFO L276 IsEmpty]: Start isEmpty. Operand 1253 states and 3397 transitions. [2021-06-05 20:34:40,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:34:40,101 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:34:40,101 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:34:40,101 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable255 [2021-06-05 20:34:40,101 INFO L430 AbstractCegarLoop]: === Iteration 257 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:34:40,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:34:40,102 INFO L82 PathProgramCache]: Analyzing trace with hash 837251248, now seen corresponding path program 255 times [2021-06-05 20:34:40,102 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:34:40,102 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1099709236] [2021-06-05 20:34:40,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:34:40,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:34:40,161 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:34:40,161 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:34:40,161 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1099709236] [2021-06-05 20:34:40,161 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1099709236] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:34:40,162 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:34:40,162 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 20:34:40,162 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [901771319] [2021-06-05 20:34:40,162 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 20:34:40,162 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:34:40,162 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 20:34:40,162 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:40,162 INFO L87 Difference]: Start difference. First operand 1253 states and 3397 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:40,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:34:40,318 INFO L93 Difference]: Finished difference Result 1387 states and 3720 transitions. [2021-06-05 20:34:40,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 20:34:40,318 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:34:40,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:34:40,319 INFO L225 Difference]: With dead ends: 1387 [2021-06-05 20:34:40,319 INFO L226 Difference]: Without dead ends: 1291 [2021-06-05 20:34:40,319 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 48.4ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:40,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1291 states. [2021-06-05 20:34:40,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1291 to 1238. [2021-06-05 20:34:40,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1238 states, 1237 states have (on average 2.719482619240097) internal successors, (3364), 1237 states have internal predecessors, (3364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:40,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1238 states to 1238 states and 3364 transitions. [2021-06-05 20:34:40,331 INFO L78 Accepts]: Start accepts. Automaton has 1238 states and 3364 transitions. Word has length 26 [2021-06-05 20:34:40,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:34:40,331 INFO L482 AbstractCegarLoop]: Abstraction has 1238 states and 3364 transitions. [2021-06-05 20:34:40,332 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:40,332 INFO L276 IsEmpty]: Start isEmpty. Operand 1238 states and 3364 transitions. [2021-06-05 20:34:40,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:34:40,333 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:34:40,333 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:34:40,333 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable256 [2021-06-05 20:34:40,333 INFO L430 AbstractCegarLoop]: === Iteration 258 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:34:40,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:34:40,333 INFO L82 PathProgramCache]: Analyzing trace with hash 328314028, now seen corresponding path program 256 times [2021-06-05 20:34:40,333 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:34:40,333 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [243282302] [2021-06-05 20:34:40,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:34:40,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:34:40,384 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:34:40,385 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:34:40,385 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [243282302] [2021-06-05 20:34:40,385 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [243282302] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:34:40,385 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:34:40,385 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:34:40,385 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1489100836] [2021-06-05 20:34:40,385 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-05 20:34:40,385 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:34:40,385 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-05 20:34:40,385 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:34:40,385 INFO L87 Difference]: Start difference. First operand 1238 states and 3364 transitions. Second operand has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:40,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:34:40,507 INFO L93 Difference]: Finished difference Result 1442 states and 3911 transitions. [2021-06-05 20:34:40,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-05 20:34:40,508 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:34:40,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:34:40,509 INFO L225 Difference]: With dead ends: 1442 [2021-06-05 20:34:40,509 INFO L226 Difference]: Without dead ends: 1357 [2021-06-05 20:34:40,509 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 39.5ms TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:34:40,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1357 states. [2021-06-05 20:34:40,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1357 to 1252. [2021-06-05 20:34:40,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1252 states, 1251 states have (on average 2.7194244604316546) internal successors, (3402), 1251 states have internal predecessors, (3402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:40,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1252 states to 1252 states and 3402 transitions. [2021-06-05 20:34:40,521 INFO L78 Accepts]: Start accepts. Automaton has 1252 states and 3402 transitions. Word has length 26 [2021-06-05 20:34:40,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:34:40,521 INFO L482 AbstractCegarLoop]: Abstraction has 1252 states and 3402 transitions. [2021-06-05 20:34:40,521 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:40,521 INFO L276 IsEmpty]: Start isEmpty. Operand 1252 states and 3402 transitions. [2021-06-05 20:34:40,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:34:40,522 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:34:40,522 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:34:40,522 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable257 [2021-06-05 20:34:40,522 INFO L430 AbstractCegarLoop]: === Iteration 259 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:34:40,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:34:40,522 INFO L82 PathProgramCache]: Analyzing trace with hash -1240614514, now seen corresponding path program 257 times [2021-06-05 20:34:40,522 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:34:40,522 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [356883288] [2021-06-05 20:34:40,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:34:40,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:34:40,583 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:34:40,583 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:34:40,583 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [356883288] [2021-06-05 20:34:40,583 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [356883288] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:34:40,583 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:34:40,583 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:34:40,583 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [763483478] [2021-06-05 20:34:40,583 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-05 20:34:40,583 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:34:40,583 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-05 20:34:40,583 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:34:40,584 INFO L87 Difference]: Start difference. First operand 1252 states and 3402 transitions. Second operand has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:40,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:34:40,710 INFO L93 Difference]: Finished difference Result 1475 states and 4004 transitions. [2021-06-05 20:34:40,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-05 20:34:40,710 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:34:40,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:34:40,711 INFO L225 Difference]: With dead ends: 1475 [2021-06-05 20:34:40,711 INFO L226 Difference]: Without dead ends: 1382 [2021-06-05 20:34:40,712 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 53.3ms TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:34:40,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1382 states. [2021-06-05 20:34:40,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1382 to 1238. [2021-06-05 20:34:40,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1238 states, 1237 states have (on average 2.7178658043654003) internal successors, (3362), 1237 states have internal predecessors, (3362), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:40,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1238 states to 1238 states and 3362 transitions. [2021-06-05 20:34:40,724 INFO L78 Accepts]: Start accepts. Automaton has 1238 states and 3362 transitions. Word has length 26 [2021-06-05 20:34:40,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:34:40,724 INFO L482 AbstractCegarLoop]: Abstraction has 1238 states and 3362 transitions. [2021-06-05 20:34:40,724 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:40,724 INFO L276 IsEmpty]: Start isEmpty. Operand 1238 states and 3362 transitions. [2021-06-05 20:34:40,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:34:40,725 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:34:40,725 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:34:40,725 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable258 [2021-06-05 20:34:40,725 INFO L430 AbstractCegarLoop]: === Iteration 260 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:34:40,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:34:40,725 INFO L82 PathProgramCache]: Analyzing trace with hash -986929394, now seen corresponding path program 258 times [2021-06-05 20:34:40,725 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:34:40,725 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1821216757] [2021-06-05 20:34:40,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:34:40,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:34:40,784 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:34:40,784 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:34:40,784 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1821216757] [2021-06-05 20:34:40,784 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1821216757] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:34:40,784 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:34:40,784 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 20:34:40,784 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1518242738] [2021-06-05 20:34:40,784 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 20:34:40,784 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:34:40,785 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 20:34:40,785 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:40,785 INFO L87 Difference]: Start difference. First operand 1238 states and 3362 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:40,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:34:40,943 INFO L93 Difference]: Finished difference Result 1375 states and 3707 transitions. [2021-06-05 20:34:40,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 20:34:40,943 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:34:40,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:34:40,944 INFO L225 Difference]: With dead ends: 1375 [2021-06-05 20:34:40,944 INFO L226 Difference]: Without dead ends: 1294 [2021-06-05 20:34:40,944 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 48.3ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:40,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1294 states. [2021-06-05 20:34:40,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1294 to 1242. [2021-06-05 20:34:40,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1242 states, 1241 states have (on average 2.721192586623691) internal successors, (3377), 1241 states have internal predecessors, (3377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:40,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1242 states to 1242 states and 3377 transitions. [2021-06-05 20:34:40,956 INFO L78 Accepts]: Start accepts. Automaton has 1242 states and 3377 transitions. Word has length 26 [2021-06-05 20:34:40,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:34:40,956 INFO L482 AbstractCegarLoop]: Abstraction has 1242 states and 3377 transitions. [2021-06-05 20:34:40,956 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:40,956 INFO L276 IsEmpty]: Start isEmpty. Operand 1242 states and 3377 transitions. [2021-06-05 20:34:40,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:34:40,957 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:34:40,957 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:34:40,957 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable259 [2021-06-05 20:34:40,957 INFO L430 AbstractCegarLoop]: === Iteration 261 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:34:40,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:34:40,957 INFO L82 PathProgramCache]: Analyzing trace with hash -117484786, now seen corresponding path program 259 times [2021-06-05 20:34:40,957 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:34:40,957 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [167165995] [2021-06-05 20:34:40,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:34:40,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:34:41,013 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:34:41,013 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:34:41,014 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [167165995] [2021-06-05 20:34:41,014 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [167165995] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:34:41,014 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:34:41,014 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 20:34:41,014 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1221000211] [2021-06-05 20:34:41,014 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 20:34:41,014 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:34:41,014 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 20:34:41,014 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:41,014 INFO L87 Difference]: Start difference. First operand 1242 states and 3377 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:41,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:34:41,172 INFO L93 Difference]: Finished difference Result 1385 states and 3725 transitions. [2021-06-05 20:34:41,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 20:34:41,172 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:34:41,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:34:41,173 INFO L225 Difference]: With dead ends: 1385 [2021-06-05 20:34:41,173 INFO L226 Difference]: Without dead ends: 1288 [2021-06-05 20:34:41,173 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 48.3ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:41,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1288 states. [2021-06-05 20:34:41,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1288 to 1243. [2021-06-05 20:34:41,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1243 states, 1242 states have (on average 2.7206119162640903) internal successors, (3379), 1242 states have internal predecessors, (3379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:41,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1243 states to 1243 states and 3379 transitions. [2021-06-05 20:34:41,185 INFO L78 Accepts]: Start accepts. Automaton has 1243 states and 3379 transitions. Word has length 26 [2021-06-05 20:34:41,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:34:41,185 INFO L482 AbstractCegarLoop]: Abstraction has 1243 states and 3379 transitions. [2021-06-05 20:34:41,185 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:41,185 INFO L276 IsEmpty]: Start isEmpty. Operand 1243 states and 3379 transitions. [2021-06-05 20:34:41,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:34:41,186 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:34:41,186 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:34:41,186 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable260 [2021-06-05 20:34:41,186 INFO L430 AbstractCegarLoop]: === Iteration 262 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:34:41,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:34:41,186 INFO L82 PathProgramCache]: Analyzing trace with hash -1586196016, now seen corresponding path program 260 times [2021-06-05 20:34:41,186 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:34:41,186 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [208489573] [2021-06-05 20:34:41,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:34:41,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:34:41,241 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:34:41,242 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:34:41,242 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [208489573] [2021-06-05 20:34:41,242 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [208489573] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:34:41,242 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:34:41,242 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 20:34:41,242 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1616469640] [2021-06-05 20:34:41,242 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 20:34:41,242 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:34:41,242 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 20:34:41,242 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:41,242 INFO L87 Difference]: Start difference. First operand 1243 states and 3379 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:41,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:34:41,402 INFO L93 Difference]: Finished difference Result 1363 states and 3672 transitions. [2021-06-05 20:34:41,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 20:34:41,402 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:34:41,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:34:41,403 INFO L225 Difference]: With dead ends: 1363 [2021-06-05 20:34:41,404 INFO L226 Difference]: Without dead ends: 1274 [2021-06-05 20:34:41,404 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 48.4ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:41,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1274 states. [2021-06-05 20:34:41,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1274 to 1247. [2021-06-05 20:34:41,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1247 states, 1246 states have (on average 2.720706260032103) internal successors, (3390), 1246 states have internal predecessors, (3390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:41,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1247 states to 1247 states and 3390 transitions. [2021-06-05 20:34:41,415 INFO L78 Accepts]: Start accepts. Automaton has 1247 states and 3390 transitions. Word has length 26 [2021-06-05 20:34:41,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:34:41,415 INFO L482 AbstractCegarLoop]: Abstraction has 1247 states and 3390 transitions. [2021-06-05 20:34:41,415 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:41,415 INFO L276 IsEmpty]: Start isEmpty. Operand 1247 states and 3390 transitions. [2021-06-05 20:34:41,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:34:41,416 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:34:41,416 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:34:41,416 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable261 [2021-06-05 20:34:41,416 INFO L430 AbstractCegarLoop]: === Iteration 263 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:34:41,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:34:41,417 INFO L82 PathProgramCache]: Analyzing trace with hash -1573042444, now seen corresponding path program 261 times [2021-06-05 20:34:41,417 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:34:41,417 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [744976953] [2021-06-05 20:34:41,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:34:41,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:34:41,472 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:34:41,472 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:34:41,472 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [744976953] [2021-06-05 20:34:41,472 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [744976953] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:34:41,472 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:34:41,472 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 20:34:41,472 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1055419178] [2021-06-05 20:34:41,472 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 20:34:41,472 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:34:41,473 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 20:34:41,473 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:41,473 INFO L87 Difference]: Start difference. First operand 1247 states and 3390 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:41,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:34:41,630 INFO L93 Difference]: Finished difference Result 1378 states and 3704 transitions. [2021-06-05 20:34:41,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 20:34:41,630 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:34:41,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:34:41,631 INFO L225 Difference]: With dead ends: 1378 [2021-06-05 20:34:41,631 INFO L226 Difference]: Without dead ends: 1269 [2021-06-05 20:34:41,631 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 48.4ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:41,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1269 states. [2021-06-05 20:34:41,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1269 to 1243. [2021-06-05 20:34:41,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1243 states, 1242 states have (on average 2.718196457326892) internal successors, (3376), 1242 states have internal predecessors, (3376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:41,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1243 states to 1243 states and 3376 transitions. [2021-06-05 20:34:41,647 INFO L78 Accepts]: Start accepts. Automaton has 1243 states and 3376 transitions. Word has length 26 [2021-06-05 20:34:41,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:34:41,647 INFO L482 AbstractCegarLoop]: Abstraction has 1243 states and 3376 transitions. [2021-06-05 20:34:41,647 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:41,647 INFO L276 IsEmpty]: Start isEmpty. Operand 1243 states and 3376 transitions. [2021-06-05 20:34:41,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:34:41,648 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:34:41,648 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:34:41,648 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable262 [2021-06-05 20:34:41,648 INFO L430 AbstractCegarLoop]: === Iteration 264 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:34:41,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:34:41,648 INFO L82 PathProgramCache]: Analyzing trace with hash -1193737360, now seen corresponding path program 262 times [2021-06-05 20:34:41,648 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:34:41,648 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1928050224] [2021-06-05 20:34:41,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:34:41,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:34:41,703 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:34:41,703 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:34:41,703 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1928050224] [2021-06-05 20:34:41,703 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1928050224] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:34:41,704 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:34:41,704 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 20:34:41,704 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1032256359] [2021-06-05 20:34:41,704 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 20:34:41,704 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:34:41,704 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 20:34:41,704 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:41,704 INFO L87 Difference]: Start difference. First operand 1243 states and 3376 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:41,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:34:41,864 INFO L93 Difference]: Finished difference Result 1384 states and 3725 transitions. [2021-06-05 20:34:41,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 20:34:41,864 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:34:41,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:34:41,866 INFO L225 Difference]: With dead ends: 1384 [2021-06-05 20:34:41,866 INFO L226 Difference]: Without dead ends: 1303 [2021-06-05 20:34:41,866 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 48.3ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:41,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1303 states. [2021-06-05 20:34:41,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1303 to 1245. [2021-06-05 20:34:41,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1245 states, 1244 states have (on average 2.719453376205788) internal successors, (3383), 1244 states have internal predecessors, (3383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:41,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1245 states to 1245 states and 3383 transitions. [2021-06-05 20:34:41,877 INFO L78 Accepts]: Start accepts. Automaton has 1245 states and 3383 transitions. Word has length 26 [2021-06-05 20:34:41,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:34:41,877 INFO L482 AbstractCegarLoop]: Abstraction has 1245 states and 3383 transitions. [2021-06-05 20:34:41,877 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:41,877 INFO L276 IsEmpty]: Start isEmpty. Operand 1245 states and 3383 transitions. [2021-06-05 20:34:41,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:34:41,878 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:34:41,878 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:34:41,878 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable263 [2021-06-05 20:34:41,878 INFO L430 AbstractCegarLoop]: === Iteration 265 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:34:41,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:34:41,879 INFO L82 PathProgramCache]: Analyzing trace with hash -324292752, now seen corresponding path program 263 times [2021-06-05 20:34:41,879 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:34:41,879 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1735030246] [2021-06-05 20:34:41,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:34:41,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:34:41,934 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:34:41,934 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:34:41,934 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1735030246] [2021-06-05 20:34:41,934 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1735030246] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:34:41,934 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:34:41,934 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 20:34:41,934 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1892934269] [2021-06-05 20:34:41,934 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 20:34:41,934 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:34:41,935 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 20:34:41,935 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:41,935 INFO L87 Difference]: Start difference. First operand 1245 states and 3383 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:42,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:34:42,093 INFO L93 Difference]: Finished difference Result 1389 states and 3727 transitions. [2021-06-05 20:34:42,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 20:34:42,093 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:34:42,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:34:42,094 INFO L225 Difference]: With dead ends: 1389 [2021-06-05 20:34:42,094 INFO L226 Difference]: Without dead ends: 1292 [2021-06-05 20:34:42,095 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 48.5ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:42,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1292 states. [2021-06-05 20:34:42,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1292 to 1241. [2021-06-05 20:34:42,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1241 states, 1240 states have (on average 2.7161290322580647) internal successors, (3368), 1240 states have internal predecessors, (3368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:42,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1241 states to 1241 states and 3368 transitions. [2021-06-05 20:34:42,106 INFO L78 Accepts]: Start accepts. Automaton has 1241 states and 3368 transitions. Word has length 26 [2021-06-05 20:34:42,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:34:42,106 INFO L482 AbstractCegarLoop]: Abstraction has 1241 states and 3368 transitions. [2021-06-05 20:34:42,106 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:42,106 INFO L276 IsEmpty]: Start isEmpty. Operand 1241 states and 3368 transitions. [2021-06-05 20:34:42,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:34:42,107 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:34:42,107 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:34:42,107 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable264 [2021-06-05 20:34:42,107 INFO L430 AbstractCegarLoop]: === Iteration 266 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:34:42,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:34:42,107 INFO L82 PathProgramCache]: Analyzing trace with hash 1596391118, now seen corresponding path program 264 times [2021-06-05 20:34:42,107 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:34:42,107 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2051639409] [2021-06-05 20:34:42,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:34:42,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:34:42,163 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:34:42,163 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:34:42,163 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2051639409] [2021-06-05 20:34:42,163 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2051639409] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:34:42,163 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:34:42,163 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 20:34:42,163 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1813021345] [2021-06-05 20:34:42,164 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 20:34:42,164 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:34:42,164 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 20:34:42,164 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:42,164 INFO L87 Difference]: Start difference. First operand 1241 states and 3368 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:42,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:34:42,322 INFO L93 Difference]: Finished difference Result 1366 states and 3673 transitions. [2021-06-05 20:34:42,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 20:34:42,322 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:34:42,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:34:42,323 INFO L225 Difference]: With dead ends: 1366 [2021-06-05 20:34:42,323 INFO L226 Difference]: Without dead ends: 1279 [2021-06-05 20:34:42,323 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 47.7ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:42,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1279 states. [2021-06-05 20:34:42,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1279 to 1242. [2021-06-05 20:34:42,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1242 states, 1241 states have (on average 2.7147461724415796) internal successors, (3369), 1241 states have internal predecessors, (3369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:42,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1242 states to 1242 states and 3369 transitions. [2021-06-05 20:34:42,335 INFO L78 Accepts]: Start accepts. Automaton has 1242 states and 3369 transitions. Word has length 26 [2021-06-05 20:34:42,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:34:42,335 INFO L482 AbstractCegarLoop]: Abstraction has 1242 states and 3369 transitions. [2021-06-05 20:34:42,335 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:42,335 INFO L276 IsEmpty]: Start isEmpty. Operand 1242 states and 3369 transitions. [2021-06-05 20:34:42,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:34:42,336 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:34:42,336 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:34:42,336 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable265 [2021-06-05 20:34:42,336 INFO L430 AbstractCegarLoop]: === Iteration 267 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:34:42,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:34:42,336 INFO L82 PathProgramCache]: Analyzing trace with hash -578638486, now seen corresponding path program 265 times [2021-06-05 20:34:42,336 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:34:42,337 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1605165366] [2021-06-05 20:34:42,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:34:42,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:34:42,392 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:34:42,392 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:34:42,392 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1605165366] [2021-06-05 20:34:42,392 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1605165366] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:34:42,392 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:34:42,392 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 20:34:42,392 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2001019091] [2021-06-05 20:34:42,392 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 20:34:42,392 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:34:42,393 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 20:34:42,393 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:42,393 INFO L87 Difference]: Start difference. First operand 1242 states and 3369 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:42,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:34:42,551 INFO L93 Difference]: Finished difference Result 1386 states and 3719 transitions. [2021-06-05 20:34:42,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 20:34:42,551 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:34:42,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:34:42,552 INFO L225 Difference]: With dead ends: 1386 [2021-06-05 20:34:42,552 INFO L226 Difference]: Without dead ends: 1281 [2021-06-05 20:34:42,552 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 48.4ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:42,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1281 states. [2021-06-05 20:34:42,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1281 to 1236. [2021-06-05 20:34:42,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1236 states, 1235 states have (on average 2.7157894736842105) internal successors, (3354), 1235 states have internal predecessors, (3354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:42,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1236 states to 1236 states and 3354 transitions. [2021-06-05 20:34:42,563 INFO L78 Accepts]: Start accepts. Automaton has 1236 states and 3354 transitions. Word has length 26 [2021-06-05 20:34:42,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:34:42,564 INFO L482 AbstractCegarLoop]: Abstraction has 1236 states and 3354 transitions. [2021-06-05 20:34:42,564 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:42,564 INFO L276 IsEmpty]: Start isEmpty. Operand 1236 states and 3354 transitions. [2021-06-05 20:34:42,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:34:42,565 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:34:42,565 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:34:42,565 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable266 [2021-06-05 20:34:42,565 INFO L430 AbstractCegarLoop]: === Iteration 268 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:34:42,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:34:42,565 INFO L82 PathProgramCache]: Analyzing trace with hash -73777870, now seen corresponding path program 266 times [2021-06-05 20:34:42,565 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:34:42,565 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [759284665] [2021-06-05 20:34:42,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:34:42,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:34:42,625 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:34:42,625 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:34:42,625 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [759284665] [2021-06-05 20:34:42,625 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [759284665] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:34:42,625 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:34:42,625 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 20:34:42,625 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [617309933] [2021-06-05 20:34:42,625 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 20:34:42,625 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:34:42,625 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 20:34:42,625 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:42,626 INFO L87 Difference]: Start difference. First operand 1236 states and 3354 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:42,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:34:42,786 INFO L93 Difference]: Finished difference Result 1442 states and 3908 transitions. [2021-06-05 20:34:42,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 20:34:42,786 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:34:42,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:34:42,788 INFO L225 Difference]: With dead ends: 1442 [2021-06-05 20:34:42,788 INFO L226 Difference]: Without dead ends: 1351 [2021-06-05 20:34:42,788 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 49.2ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:42,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1351 states. [2021-06-05 20:34:42,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1351 to 1238. [2021-06-05 20:34:42,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1238 states, 1237 states have (on average 2.7130153597413096) internal successors, (3356), 1237 states have internal predecessors, (3356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:42,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1238 states to 1238 states and 3356 transitions. [2021-06-05 20:34:42,799 INFO L78 Accepts]: Start accepts. Automaton has 1238 states and 3356 transitions. Word has length 26 [2021-06-05 20:34:42,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:34:42,799 INFO L482 AbstractCegarLoop]: Abstraction has 1238 states and 3356 transitions. [2021-06-05 20:34:42,800 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:42,800 INFO L276 IsEmpty]: Start isEmpty. Operand 1238 states and 3356 transitions. [2021-06-05 20:34:42,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:34:42,801 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:34:42,801 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:34:42,801 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable267 [2021-06-05 20:34:42,801 INFO L430 AbstractCegarLoop]: === Iteration 269 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:34:42,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:34:42,801 INFO L82 PathProgramCache]: Analyzing trace with hash -1465922416, now seen corresponding path program 267 times [2021-06-05 20:34:42,801 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:34:42,801 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [190522487] [2021-06-05 20:34:42,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:34:42,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:34:42,857 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:34:42,857 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:34:42,857 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [190522487] [2021-06-05 20:34:42,858 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [190522487] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:34:42,858 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:34:42,858 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 20:34:42,858 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1836040876] [2021-06-05 20:34:42,858 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 20:34:42,858 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:34:42,858 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 20:34:42,858 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:42,858 INFO L87 Difference]: Start difference. First operand 1238 states and 3356 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:43,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:34:43,016 INFO L93 Difference]: Finished difference Result 1473 states and 3992 transitions. [2021-06-05 20:34:43,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 20:34:43,016 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:34:43,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:34:43,017 INFO L225 Difference]: With dead ends: 1473 [2021-06-05 20:34:43,017 INFO L226 Difference]: Without dead ends: 1381 [2021-06-05 20:34:43,017 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 48.3ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:43,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1381 states. [2021-06-05 20:34:43,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1381 to 1234. [2021-06-05 20:34:43,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1234 states, 1233 states have (on average 2.710462287104623) internal successors, (3342), 1233 states have internal predecessors, (3342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:43,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1234 states to 1234 states and 3342 transitions. [2021-06-05 20:34:43,029 INFO L78 Accepts]: Start accepts. Automaton has 1234 states and 3342 transitions. Word has length 26 [2021-06-05 20:34:43,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:34:43,029 INFO L482 AbstractCegarLoop]: Abstraction has 1234 states and 3342 transitions. [2021-06-05 20:34:43,029 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:43,029 INFO L276 IsEmpty]: Start isEmpty. Operand 1234 states and 3342 transitions. [2021-06-05 20:34:43,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:34:43,030 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:34:43,030 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:34:43,030 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable268 [2021-06-05 20:34:43,030 INFO L430 AbstractCegarLoop]: === Iteration 270 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:34:43,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:34:43,031 INFO L82 PathProgramCache]: Analyzing trace with hash -1840935756, now seen corresponding path program 268 times [2021-06-05 20:34:43,031 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:34:43,031 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [983275119] [2021-06-05 20:34:43,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:34:43,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:34:43,094 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:34:43,094 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:34:43,094 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [983275119] [2021-06-05 20:34:43,094 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [983275119] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:34:43,094 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:34:43,094 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:34:43,094 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1381161910] [2021-06-05 20:34:43,094 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-05 20:34:43,094 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:34:43,094 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-05 20:34:43,094 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:34:43,095 INFO L87 Difference]: Start difference. First operand 1234 states and 3342 transitions. Second operand has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:43,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:34:43,221 INFO L93 Difference]: Finished difference Result 1450 states and 3914 transitions. [2021-06-05 20:34:43,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-05 20:34:43,222 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:34:43,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:34:43,223 INFO L225 Difference]: With dead ends: 1450 [2021-06-05 20:34:43,223 INFO L226 Difference]: Without dead ends: 1359 [2021-06-05 20:34:43,223 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 56.2ms TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:34:43,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1359 states. [2021-06-05 20:34:43,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1359 to 1260. [2021-06-05 20:34:43,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1260 states, 1259 states have (on average 2.711675933280381) internal successors, (3414), 1259 states have internal predecessors, (3414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:43,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1260 states to 1260 states and 3414 transitions. [2021-06-05 20:34:43,235 INFO L78 Accepts]: Start accepts. Automaton has 1260 states and 3414 transitions. Word has length 26 [2021-06-05 20:34:43,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:34:43,235 INFO L482 AbstractCegarLoop]: Abstraction has 1260 states and 3414 transitions. [2021-06-05 20:34:43,235 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:43,235 INFO L276 IsEmpty]: Start isEmpty. Operand 1260 states and 3414 transitions. [2021-06-05 20:34:43,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:34:43,236 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:34:43,236 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:34:43,236 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable269 [2021-06-05 20:34:43,236 INFO L430 AbstractCegarLoop]: === Iteration 271 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:34:43,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:34:43,236 INFO L82 PathProgramCache]: Analyzing trace with hash -971491148, now seen corresponding path program 269 times [2021-06-05 20:34:43,236 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:34:43,237 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [799399467] [2021-06-05 20:34:43,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:34:43,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:34:43,307 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:34:43,307 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:34:43,307 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [799399467] [2021-06-05 20:34:43,307 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [799399467] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:34:43,307 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:34:43,307 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 20:34:43,307 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440437813] [2021-06-05 20:34:43,307 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 20:34:43,307 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:34:43,307 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 20:34:43,308 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:43,308 INFO L87 Difference]: Start difference. First operand 1260 states and 3414 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:43,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:34:43,462 INFO L93 Difference]: Finished difference Result 1501 states and 4029 transitions. [2021-06-05 20:34:43,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 20:34:43,462 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:34:43,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:34:43,463 INFO L225 Difference]: With dead ends: 1501 [2021-06-05 20:34:43,463 INFO L226 Difference]: Without dead ends: 1304 [2021-06-05 20:34:43,463 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 63.1ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:43,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1304 states. [2021-06-05 20:34:43,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1304 to 1244. [2021-06-05 20:34:43,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1244 states, 1243 states have (on average 2.6942880128720836) internal successors, (3349), 1243 states have internal predecessors, (3349), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:43,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1244 states to 1244 states and 3349 transitions. [2021-06-05 20:34:43,475 INFO L78 Accepts]: Start accepts. Automaton has 1244 states and 3349 transitions. Word has length 26 [2021-06-05 20:34:43,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:34:43,475 INFO L482 AbstractCegarLoop]: Abstraction has 1244 states and 3349 transitions. [2021-06-05 20:34:43,475 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:43,475 INFO L276 IsEmpty]: Start isEmpty. Operand 1244 states and 3349 transitions. [2021-06-05 20:34:43,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:34:43,476 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:34:43,476 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:34:43,476 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable270 [2021-06-05 20:34:43,476 INFO L430 AbstractCegarLoop]: === Iteration 272 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:34:43,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:34:43,476 INFO L82 PathProgramCache]: Analyzing trace with hash 736290770, now seen corresponding path program 270 times [2021-06-05 20:34:43,476 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:34:43,476 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [397353081] [2021-06-05 20:34:43,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:34:43,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:34:43,531 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:34:43,531 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:34:43,532 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [397353081] [2021-06-05 20:34:43,532 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [397353081] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:34:43,532 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:34:43,532 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 20:34:43,532 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [914299251] [2021-06-05 20:34:43,532 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 20:34:43,532 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:34:43,532 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 20:34:43,532 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:43,532 INFO L87 Difference]: Start difference. First operand 1244 states and 3349 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:43,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:34:43,689 INFO L93 Difference]: Finished difference Result 1399 states and 3720 transitions. [2021-06-05 20:34:43,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 20:34:43,689 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:34:43,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:34:43,690 INFO L225 Difference]: With dead ends: 1399 [2021-06-05 20:34:43,690 INFO L226 Difference]: Without dead ends: 1304 [2021-06-05 20:34:43,690 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 48.5ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:43,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1304 states. [2021-06-05 20:34:43,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1304 to 1244. [2021-06-05 20:34:43,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1244 states, 1243 states have (on average 2.6942880128720836) internal successors, (3349), 1243 states have internal predecessors, (3349), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:43,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1244 states to 1244 states and 3349 transitions. [2021-06-05 20:34:43,702 INFO L78 Accepts]: Start accepts. Automaton has 1244 states and 3349 transitions. Word has length 26 [2021-06-05 20:34:43,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:34:43,702 INFO L482 AbstractCegarLoop]: Abstraction has 1244 states and 3349 transitions. [2021-06-05 20:34:43,702 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:43,702 INFO L276 IsEmpty]: Start isEmpty. Operand 1244 states and 3349 transitions. [2021-06-05 20:34:43,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:34:43,703 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:34:43,703 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:34:43,703 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable271 [2021-06-05 20:34:43,703 INFO L430 AbstractCegarLoop]: === Iteration 273 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:34:43,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:34:43,703 INFO L82 PathProgramCache]: Analyzing trace with hash 1605735378, now seen corresponding path program 271 times [2021-06-05 20:34:43,703 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:34:43,703 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1573822561] [2021-06-05 20:34:43,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:34:43,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:34:43,764 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:34:43,764 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:34:43,764 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1573822561] [2021-06-05 20:34:43,764 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1573822561] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:34:43,764 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:34:43,764 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 20:34:43,764 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1562635205] [2021-06-05 20:34:43,764 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 20:34:43,764 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:34:43,765 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 20:34:43,765 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:43,765 INFO L87 Difference]: Start difference. First operand 1244 states and 3349 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:43,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:34:43,923 INFO L93 Difference]: Finished difference Result 1389 states and 3693 transitions. [2021-06-05 20:34:43,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 20:34:43,924 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:34:43,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:34:43,925 INFO L225 Difference]: With dead ends: 1389 [2021-06-05 20:34:43,925 INFO L226 Difference]: Without dead ends: 1292 [2021-06-05 20:34:43,925 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 53.7ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:43,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1292 states. [2021-06-05 20:34:43,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1292 to 1244. [2021-06-05 20:34:43,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1244 states, 1243 states have (on average 2.6926790024135157) internal successors, (3347), 1243 states have internal predecessors, (3347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:43,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1244 states to 1244 states and 3347 transitions. [2021-06-05 20:34:43,936 INFO L78 Accepts]: Start accepts. Automaton has 1244 states and 3347 transitions. Word has length 26 [2021-06-05 20:34:43,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:34:43,936 INFO L482 AbstractCegarLoop]: Abstraction has 1244 states and 3347 transitions. [2021-06-05 20:34:43,936 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:43,936 INFO L276 IsEmpty]: Start isEmpty. Operand 1244 states and 3347 transitions. [2021-06-05 20:34:43,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:34:43,937 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:34:43,937 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:34:43,938 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable272 [2021-06-05 20:34:43,938 INFO L430 AbstractCegarLoop]: === Iteration 274 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:34:43,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:34:43,938 INFO L82 PathProgramCache]: Analyzing trace with hash 150177720, now seen corresponding path program 272 times [2021-06-05 20:34:43,938 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:34:43,938 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1301059256] [2021-06-05 20:34:43,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:34:43,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:34:43,999 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:34:44,000 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:34:44,000 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1301059256] [2021-06-05 20:34:44,000 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1301059256] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:34:44,000 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:34:44,000 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 20:34:44,000 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1982536249] [2021-06-05 20:34:44,000 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 20:34:44,000 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:34:44,000 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 20:34:44,000 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:44,000 INFO L87 Difference]: Start difference. First operand 1244 states and 3347 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:44,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:34:44,156 INFO L93 Difference]: Finished difference Result 1371 states and 3646 transitions. [2021-06-05 20:34:44,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 20:34:44,156 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:34:44,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:34:44,157 INFO L225 Difference]: With dead ends: 1371 [2021-06-05 20:34:44,157 INFO L226 Difference]: Without dead ends: 1266 [2021-06-05 20:34:44,157 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 51.6ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:44,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1266 states. [2021-06-05 20:34:44,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1266 to 1232. [2021-06-05 20:34:44,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1232 states, 1231 states have (on average 2.6994313566206336) internal successors, (3323), 1231 states have internal predecessors, (3323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:44,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1232 states to 1232 states and 3323 transitions. [2021-06-05 20:34:44,169 INFO L78 Accepts]: Start accepts. Automaton has 1232 states and 3323 transitions. Word has length 26 [2021-06-05 20:34:44,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:34:44,169 INFO L482 AbstractCegarLoop]: Abstraction has 1232 states and 3323 transitions. [2021-06-05 20:34:44,169 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:44,169 INFO L276 IsEmpty]: Start isEmpty. Operand 1232 states and 3323 transitions. [2021-06-05 20:34:44,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:34:44,170 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:34:44,170 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:34:44,170 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable273 [2021-06-05 20:34:44,170 INFO L430 AbstractCegarLoop]: === Iteration 275 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:34:44,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:34:44,170 INFO L82 PathProgramCache]: Analyzing trace with hash 337951890, now seen corresponding path program 273 times [2021-06-05 20:34:44,170 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:34:44,170 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1738531059] [2021-06-05 20:34:44,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:34:44,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:34:44,218 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:34:44,218 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:34:44,218 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1738531059] [2021-06-05 20:34:44,218 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1738531059] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:34:44,218 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:34:44,218 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:34:44,218 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1029294590] [2021-06-05 20:34:44,218 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-05 20:34:44,218 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:34:44,219 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-05 20:34:44,219 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:34:44,219 INFO L87 Difference]: Start difference. First operand 1232 states and 3323 transitions. Second operand has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:44,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:34:44,343 INFO L93 Difference]: Finished difference Result 1470 states and 3952 transitions. [2021-06-05 20:34:44,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-05 20:34:44,343 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:34:44,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:34:44,345 INFO L225 Difference]: With dead ends: 1470 [2021-06-05 20:34:44,345 INFO L226 Difference]: Without dead ends: 1389 [2021-06-05 20:34:44,345 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 39.3ms TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:34:44,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1389 states. [2021-06-05 20:34:44,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1389 to 1270. [2021-06-05 20:34:44,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1270 states, 1269 states have (on average 2.702915681639086) internal successors, (3430), 1269 states have internal predecessors, (3430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:44,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1270 states to 1270 states and 3430 transitions. [2021-06-05 20:34:44,357 INFO L78 Accepts]: Start accepts. Automaton has 1270 states and 3430 transitions. Word has length 26 [2021-06-05 20:34:44,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:34:44,357 INFO L482 AbstractCegarLoop]: Abstraction has 1270 states and 3430 transitions. [2021-06-05 20:34:44,357 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:44,357 INFO L276 IsEmpty]: Start isEmpty. Operand 1270 states and 3430 transitions. [2021-06-05 20:34:44,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:34:44,358 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:34:44,358 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:34:44,358 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable274 [2021-06-05 20:34:44,358 INFO L430 AbstractCegarLoop]: === Iteration 276 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:34:44,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:34:44,358 INFO L82 PathProgramCache]: Analyzing trace with hash 1207396498, now seen corresponding path program 274 times [2021-06-05 20:34:44,358 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:34:44,358 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [611928324] [2021-06-05 20:34:44,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:34:44,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:34:44,414 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:34:44,414 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:34:44,414 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [611928324] [2021-06-05 20:34:44,414 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [611928324] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:34:44,415 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:34:44,415 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 20:34:44,415 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [896248818] [2021-06-05 20:34:44,415 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 20:34:44,415 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:34:44,415 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 20:34:44,415 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:44,415 INFO L87 Difference]: Start difference. First operand 1270 states and 3430 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:44,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:34:44,570 INFO L93 Difference]: Finished difference Result 1525 states and 4077 transitions. [2021-06-05 20:34:44,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 20:34:44,570 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:34:44,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:34:44,572 INFO L225 Difference]: With dead ends: 1525 [2021-06-05 20:34:44,572 INFO L226 Difference]: Without dead ends: 1330 [2021-06-05 20:34:44,572 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 47.8ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:44,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1330 states. [2021-06-05 20:34:44,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1330 to 1232. [2021-06-05 20:34:44,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1232 states, 1231 states have (on average 2.6896831844029245) internal successors, (3311), 1231 states have internal predecessors, (3311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:44,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1232 states to 1232 states and 3311 transitions. [2021-06-05 20:34:44,583 INFO L78 Accepts]: Start accepts. Automaton has 1232 states and 3311 transitions. Word has length 26 [2021-06-05 20:34:44,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:34:44,583 INFO L482 AbstractCegarLoop]: Abstraction has 1232 states and 3311 transitions. [2021-06-05 20:34:44,583 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:44,584 INFO L276 IsEmpty]: Start isEmpty. Operand 1232 states and 3311 transitions. [2021-06-05 20:34:44,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:34:44,585 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:34:44,585 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:34:44,585 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable275 [2021-06-05 20:34:44,585 INFO L430 AbstractCegarLoop]: === Iteration 277 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:34:44,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:34:44,585 INFO L82 PathProgramCache]: Analyzing trace with hash 1219336402, now seen corresponding path program 275 times [2021-06-05 20:34:44,585 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:34:44,585 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [798863154] [2021-06-05 20:34:44,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:34:44,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:34:44,641 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:34:44,641 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:34:44,641 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [798863154] [2021-06-05 20:34:44,641 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [798863154] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:34:44,641 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:34:44,642 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 20:34:44,642 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [154625124] [2021-06-05 20:34:44,642 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 20:34:44,642 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:34:44,642 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 20:34:44,642 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:44,642 INFO L87 Difference]: Start difference. First operand 1232 states and 3311 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:44,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:34:44,799 INFO L93 Difference]: Finished difference Result 1421 states and 3771 transitions. [2021-06-05 20:34:44,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 20:34:44,799 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:34:44,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:34:44,800 INFO L225 Difference]: With dead ends: 1421 [2021-06-05 20:34:44,800 INFO L226 Difference]: Without dead ends: 1334 [2021-06-05 20:34:44,800 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 48.4ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:44,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1334 states. [2021-06-05 20:34:44,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1334 to 1222. [2021-06-05 20:34:44,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1222 states, 1221 states have (on average 2.692055692055692) internal successors, (3287), 1221 states have internal predecessors, (3287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:44,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1222 states to 1222 states and 3287 transitions. [2021-06-05 20:34:44,817 INFO L78 Accepts]: Start accepts. Automaton has 1222 states and 3287 transitions. Word has length 26 [2021-06-05 20:34:44,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:34:44,817 INFO L482 AbstractCegarLoop]: Abstraction has 1222 states and 3287 transitions. [2021-06-05 20:34:44,817 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:44,817 INFO L276 IsEmpty]: Start isEmpty. Operand 1222 states and 3287 transitions. [2021-06-05 20:34:44,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:34:44,818 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:34:44,818 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:34:44,818 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable276 [2021-06-05 20:34:44,818 INFO L430 AbstractCegarLoop]: === Iteration 278 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:34:44,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:34:44,818 INFO L82 PathProgramCache]: Analyzing trace with hash 2088781010, now seen corresponding path program 276 times [2021-06-05 20:34:44,818 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:34:44,818 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1919846795] [2021-06-05 20:34:44,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:34:44,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:34:44,874 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:34:44,874 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:34:44,874 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1919846795] [2021-06-05 20:34:44,874 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1919846795] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:34:44,874 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:34:44,874 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 20:34:44,874 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [66710329] [2021-06-05 20:34:44,875 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 20:34:44,875 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:34:44,875 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 20:34:44,875 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:44,875 INFO L87 Difference]: Start difference. First operand 1222 states and 3287 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:45,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:34:45,038 INFO L93 Difference]: Finished difference Result 1394 states and 3706 transitions. [2021-06-05 20:34:45,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 20:34:45,038 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:34:45,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:34:45,039 INFO L225 Difference]: With dead ends: 1394 [2021-06-05 20:34:45,040 INFO L226 Difference]: Without dead ends: 1297 [2021-06-05 20:34:45,040 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 48.2ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:45,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1297 states. [2021-06-05 20:34:45,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1297 to 1237. [2021-06-05 20:34:45,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1237 states, 1236 states have (on average 2.6885113268608416) internal successors, (3323), 1236 states have internal predecessors, (3323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:45,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1237 states to 1237 states and 3323 transitions. [2021-06-05 20:34:45,051 INFO L78 Accepts]: Start accepts. Automaton has 1237 states and 3323 transitions. Word has length 26 [2021-06-05 20:34:45,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:34:45,051 INFO L482 AbstractCegarLoop]: Abstraction has 1237 states and 3323 transitions. [2021-06-05 20:34:45,051 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:45,051 INFO L276 IsEmpty]: Start isEmpty. Operand 1237 states and 3323 transitions. [2021-06-05 20:34:45,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:34:45,053 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:34:45,053 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:34:45,053 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable277 [2021-06-05 20:34:45,053 INFO L430 AbstractCegarLoop]: === Iteration 279 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:34:45,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:34:45,053 INFO L82 PathProgramCache]: Analyzing trace with hash -1393983698, now seen corresponding path program 277 times [2021-06-05 20:34:45,053 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:34:45,053 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2140620156] [2021-06-05 20:34:45,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:34:45,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:34:45,108 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:34:45,108 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:34:45,108 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2140620156] [2021-06-05 20:34:45,108 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2140620156] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:34:45,108 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:34:45,108 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 20:34:45,108 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [4672550] [2021-06-05 20:34:45,108 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 20:34:45,108 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:34:45,108 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 20:34:45,108 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:45,108 INFO L87 Difference]: Start difference. First operand 1237 states and 3323 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:45,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:34:45,269 INFO L93 Difference]: Finished difference Result 1383 states and 3684 transitions. [2021-06-05 20:34:45,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 20:34:45,270 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:34:45,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:34:45,271 INFO L225 Difference]: With dead ends: 1383 [2021-06-05 20:34:45,271 INFO L226 Difference]: Without dead ends: 1281 [2021-06-05 20:34:45,271 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 48.0ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:45,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1281 states. [2021-06-05 20:34:45,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1281 to 1234. [2021-06-05 20:34:45,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1234 states, 1233 states have (on average 2.6885644768856447) internal successors, (3315), 1233 states have internal predecessors, (3315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:45,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1234 states to 1234 states and 3315 transitions. [2021-06-05 20:34:45,282 INFO L78 Accepts]: Start accepts. Automaton has 1234 states and 3315 transitions. Word has length 26 [2021-06-05 20:34:45,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:34:45,282 INFO L482 AbstractCegarLoop]: Abstraction has 1234 states and 3315 transitions. [2021-06-05 20:34:45,282 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:45,282 INFO L276 IsEmpty]: Start isEmpty. Operand 1234 states and 3315 transitions. [2021-06-05 20:34:45,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:34:45,283 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:34:45,283 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:34:45,283 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable278 [2021-06-05 20:34:45,283 INFO L430 AbstractCegarLoop]: === Iteration 280 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:34:45,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:34:45,284 INFO L82 PathProgramCache]: Analyzing trace with hash 1871569878, now seen corresponding path program 278 times [2021-06-05 20:34:45,284 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:34:45,284 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [494089357] [2021-06-05 20:34:45,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:34:45,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:34:45,337 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:34:45,338 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:34:45,338 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [494089357] [2021-06-05 20:34:45,338 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [494089357] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:34:45,338 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:34:45,338 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 20:34:45,338 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2124326162] [2021-06-05 20:34:45,338 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 20:34:45,338 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:34:45,338 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 20:34:45,338 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:45,338 INFO L87 Difference]: Start difference. First operand 1234 states and 3315 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:45,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:34:45,491 INFO L93 Difference]: Finished difference Result 1413 states and 3754 transitions. [2021-06-05 20:34:45,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 20:34:45,492 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:34:45,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:34:45,493 INFO L225 Difference]: With dead ends: 1413 [2021-06-05 20:34:45,493 INFO L226 Difference]: Without dead ends: 1284 [2021-06-05 20:34:45,493 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 47.3ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:45,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1284 states. [2021-06-05 20:34:45,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1284 to 1234. [2021-06-05 20:34:45,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1234 states, 1233 states have (on average 2.6853203568532034) internal successors, (3311), 1233 states have internal predecessors, (3311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:45,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1234 states to 1234 states and 3311 transitions. [2021-06-05 20:34:45,504 INFO L78 Accepts]: Start accepts. Automaton has 1234 states and 3311 transitions. Word has length 26 [2021-06-05 20:34:45,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:34:45,505 INFO L482 AbstractCegarLoop]: Abstraction has 1234 states and 3311 transitions. [2021-06-05 20:34:45,505 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:45,505 INFO L276 IsEmpty]: Start isEmpty. Operand 1234 states and 3311 transitions. [2021-06-05 20:34:45,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:34:45,506 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:34:45,506 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:34:45,506 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable279 [2021-06-05 20:34:45,506 INFO L430 AbstractCegarLoop]: === Iteration 281 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:34:45,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:34:45,506 INFO L82 PathProgramCache]: Analyzing trace with hash 1011254384, now seen corresponding path program 279 times [2021-06-05 20:34:45,506 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:34:45,506 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1718246621] [2021-06-05 20:34:45,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:34:45,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:34:45,576 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:34:45,576 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:34:45,576 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1718246621] [2021-06-05 20:34:45,576 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1718246621] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:34:45,576 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:34:45,576 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 20:34:45,576 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [839395248] [2021-06-05 20:34:45,577 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 20:34:45,577 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:34:45,577 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 20:34:45,577 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:45,577 INFO L87 Difference]: Start difference. First operand 1234 states and 3311 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:45,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:34:45,733 INFO L93 Difference]: Finished difference Result 1364 states and 3627 transitions. [2021-06-05 20:34:45,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 20:34:45,733 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:34:45,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:34:45,734 INFO L225 Difference]: With dead ends: 1364 [2021-06-05 20:34:45,734 INFO L226 Difference]: Without dead ends: 1283 [2021-06-05 20:34:45,734 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 49.3ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:45,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1283 states. [2021-06-05 20:34:45,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1283 to 1235. [2021-06-05 20:34:45,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1235 states, 1234 states have (on average 2.686385737439222) internal successors, (3315), 1234 states have internal predecessors, (3315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:45,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1235 states to 1235 states and 3315 transitions. [2021-06-05 20:34:45,746 INFO L78 Accepts]: Start accepts. Automaton has 1235 states and 3315 transitions. Word has length 26 [2021-06-05 20:34:45,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:34:45,746 INFO L482 AbstractCegarLoop]: Abstraction has 1235 states and 3315 transitions. [2021-06-05 20:34:45,746 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:45,746 INFO L276 IsEmpty]: Start isEmpty. Operand 1235 states and 3315 transitions. [2021-06-05 20:34:45,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:34:45,747 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:34:45,747 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:34:45,747 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable280 [2021-06-05 20:34:45,747 INFO L430 AbstractCegarLoop]: === Iteration 282 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:34:45,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:34:45,747 INFO L82 PathProgramCache]: Analyzing trace with hash 1880698992, now seen corresponding path program 280 times [2021-06-05 20:34:45,747 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:34:45,747 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1571791701] [2021-06-05 20:34:45,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:34:45,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:34:45,802 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:34:45,802 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:34:45,802 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1571791701] [2021-06-05 20:34:45,803 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1571791701] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:34:45,803 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:34:45,803 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 20:34:45,803 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1828301869] [2021-06-05 20:34:45,803 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 20:34:45,803 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:34:45,803 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 20:34:45,803 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:45,803 INFO L87 Difference]: Start difference. First operand 1235 states and 3315 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:45,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:34:45,970 INFO L93 Difference]: Finished difference Result 1374 states and 3654 transitions. [2021-06-05 20:34:45,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 20:34:45,970 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:34:45,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:34:45,972 INFO L225 Difference]: With dead ends: 1374 [2021-06-05 20:34:45,972 INFO L226 Difference]: Without dead ends: 1277 [2021-06-05 20:34:45,972 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 48.4ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:45,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1277 states. [2021-06-05 20:34:45,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1277 to 1236. [2021-06-05 20:34:45,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1236 states, 1235 states have (on average 2.68582995951417) internal successors, (3317), 1235 states have internal predecessors, (3317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:45,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1236 states to 1236 states and 3317 transitions. [2021-06-05 20:34:45,983 INFO L78 Accepts]: Start accepts. Automaton has 1236 states and 3317 transitions. Word has length 26 [2021-06-05 20:34:45,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:34:45,983 INFO L482 AbstractCegarLoop]: Abstraction has 1236 states and 3317 transitions. [2021-06-05 20:34:45,983 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:45,983 INFO L276 IsEmpty]: Start isEmpty. Operand 1236 states and 3317 transitions. [2021-06-05 20:34:45,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:34:45,984 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:34:45,984 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:34:45,984 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable281 [2021-06-05 20:34:45,984 INFO L430 AbstractCegarLoop]: === Iteration 283 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:34:45,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:34:45,985 INFO L82 PathProgramCache]: Analyzing trace with hash 411987762, now seen corresponding path program 281 times [2021-06-05 20:34:45,985 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:34:45,985 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1176171825] [2021-06-05 20:34:45,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:34:45,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:34:46,041 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:34:46,041 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:34:46,041 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1176171825] [2021-06-05 20:34:46,041 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1176171825] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:34:46,041 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:34:46,042 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 20:34:46,042 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1625632916] [2021-06-05 20:34:46,042 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 20:34:46,042 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:34:46,042 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 20:34:46,042 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:46,042 INFO L87 Difference]: Start difference. First operand 1236 states and 3317 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:46,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:34:46,199 INFO L93 Difference]: Finished difference Result 1361 states and 3614 transitions. [2021-06-05 20:34:46,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 20:34:46,200 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:34:46,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:34:46,201 INFO L225 Difference]: With dead ends: 1361 [2021-06-05 20:34:46,201 INFO L226 Difference]: Without dead ends: 1270 [2021-06-05 20:34:46,201 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 48.6ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:46,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1270 states. [2021-06-05 20:34:46,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1270 to 1230. [2021-06-05 20:34:46,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1230 states, 1229 states have (on average 2.679414157851912) internal successors, (3293), 1229 states have internal predecessors, (3293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:46,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1230 states to 1230 states and 3293 transitions. [2021-06-05 20:34:46,212 INFO L78 Accepts]: Start accepts. Automaton has 1230 states and 3293 transitions. Word has length 26 [2021-06-05 20:34:46,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:34:46,212 INFO L482 AbstractCegarLoop]: Abstraction has 1230 states and 3293 transitions. [2021-06-05 20:34:46,212 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:46,212 INFO L276 IsEmpty]: Start isEmpty. Operand 1230 states and 3293 transitions. [2021-06-05 20:34:46,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:34:46,213 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:34:46,213 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:34:46,213 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable282 [2021-06-05 20:34:46,214 INFO L430 AbstractCegarLoop]: === Iteration 284 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:34:46,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:34:46,214 INFO L82 PathProgramCache]: Analyzing trace with hash 425141334, now seen corresponding path program 282 times [2021-06-05 20:34:46,214 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:34:46,214 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1459468550] [2021-06-05 20:34:46,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:34:46,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:34:46,269 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:34:46,269 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:34:46,269 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1459468550] [2021-06-05 20:34:46,269 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1459468550] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:34:46,269 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:34:46,269 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 20:34:46,269 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1449792619] [2021-06-05 20:34:46,269 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 20:34:46,269 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:34:46,269 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 20:34:46,269 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:46,269 INFO L87 Difference]: Start difference. First operand 1230 states and 3293 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:46,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:34:46,431 INFO L93 Difference]: Finished difference Result 1343 states and 3570 transitions. [2021-06-05 20:34:46,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 20:34:46,431 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:34:46,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:34:46,432 INFO L225 Difference]: With dead ends: 1343 [2021-06-05 20:34:46,432 INFO L226 Difference]: Without dead ends: 1244 [2021-06-05 20:34:46,432 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 48.2ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:46,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1244 states. [2021-06-05 20:34:46,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1244 to 1229. [2021-06-05 20:34:46,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1229 states, 1228 states have (on average 2.6807817589576546) internal successors, (3292), 1228 states have internal predecessors, (3292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:46,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1229 states to 1229 states and 3292 transitions. [2021-06-05 20:34:46,444 INFO L78 Accepts]: Start accepts. Automaton has 1229 states and 3292 transitions. Word has length 26 [2021-06-05 20:34:46,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:34:46,444 INFO L482 AbstractCegarLoop]: Abstraction has 1229 states and 3292 transitions. [2021-06-05 20:34:46,444 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:46,444 INFO L276 IsEmpty]: Start isEmpty. Operand 1229 states and 3292 transitions. [2021-06-05 20:34:46,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:34:46,445 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:34:46,445 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:34:46,445 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable283 [2021-06-05 20:34:46,445 INFO L430 AbstractCegarLoop]: === Iteration 285 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:34:46,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:34:46,445 INFO L82 PathProgramCache]: Analyzing trace with hash 804446418, now seen corresponding path program 283 times [2021-06-05 20:34:46,445 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:34:46,445 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [918722085] [2021-06-05 20:34:46,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:34:46,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:34:46,501 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:34:46,501 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:34:46,501 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [918722085] [2021-06-05 20:34:46,501 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [918722085] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:34:46,501 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:34:46,501 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 20:34:46,501 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [215265456] [2021-06-05 20:34:46,501 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 20:34:46,502 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:34:46,502 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 20:34:46,502 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:46,502 INFO L87 Difference]: Start difference. First operand 1229 states and 3292 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:46,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:34:46,659 INFO L93 Difference]: Finished difference Result 1364 states and 3621 transitions. [2021-06-05 20:34:46,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 20:34:46,659 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:34:46,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:34:46,660 INFO L225 Difference]: With dead ends: 1364 [2021-06-05 20:34:46,660 INFO L226 Difference]: Without dead ends: 1283 [2021-06-05 20:34:46,660 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 48.8ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:46,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1283 states. [2021-06-05 20:34:46,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1283 to 1229. [2021-06-05 20:34:46,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1229 states, 1228 states have (on average 2.682410423452769) internal successors, (3294), 1228 states have internal predecessors, (3294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:46,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1229 states to 1229 states and 3294 transitions. [2021-06-05 20:34:46,671 INFO L78 Accepts]: Start accepts. Automaton has 1229 states and 3294 transitions. Word has length 26 [2021-06-05 20:34:46,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:34:46,671 INFO L482 AbstractCegarLoop]: Abstraction has 1229 states and 3294 transitions. [2021-06-05 20:34:46,671 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:46,672 INFO L276 IsEmpty]: Start isEmpty. Operand 1229 states and 3294 transitions. [2021-06-05 20:34:46,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:34:46,672 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:34:46,673 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:34:46,673 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable284 [2021-06-05 20:34:46,673 INFO L430 AbstractCegarLoop]: === Iteration 286 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:34:46,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:34:46,673 INFO L82 PathProgramCache]: Analyzing trace with hash 1673891026, now seen corresponding path program 284 times [2021-06-05 20:34:46,673 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:34:46,673 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [858414366] [2021-06-05 20:34:46,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:34:46,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:34:46,739 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:34:46,739 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:34:46,739 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [858414366] [2021-06-05 20:34:46,740 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [858414366] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:34:46,740 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:34:46,740 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 20:34:46,740 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [571776445] [2021-06-05 20:34:46,740 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 20:34:46,740 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:34:46,740 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 20:34:46,740 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:46,740 INFO L87 Difference]: Start difference. First operand 1229 states and 3294 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:46,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:34:46,902 INFO L93 Difference]: Finished difference Result 1372 states and 3640 transitions. [2021-06-05 20:34:46,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 20:34:46,902 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:34:46,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:34:46,904 INFO L225 Difference]: With dead ends: 1372 [2021-06-05 20:34:46,904 INFO L226 Difference]: Without dead ends: 1275 [2021-06-05 20:34:46,904 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 55.8ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:46,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1275 states. [2021-06-05 20:34:46,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1275 to 1228. [2021-06-05 20:34:46,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1228 states, 1227 states have (on average 2.6788916055419723) internal successors, (3287), 1227 states have internal predecessors, (3287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:46,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1228 states to 1228 states and 3287 transitions. [2021-06-05 20:34:46,915 INFO L78 Accepts]: Start accepts. Automaton has 1228 states and 3287 transitions. Word has length 26 [2021-06-05 20:34:46,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:34:46,915 INFO L482 AbstractCegarLoop]: Abstraction has 1228 states and 3287 transitions. [2021-06-05 20:34:46,915 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:46,915 INFO L276 IsEmpty]: Start isEmpty. Operand 1228 states and 3287 transitions. [2021-06-05 20:34:46,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:34:46,916 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:34:46,916 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:34:46,916 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable285 [2021-06-05 20:34:46,917 INFO L430 AbstractCegarLoop]: === Iteration 287 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:34:46,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:34:46,917 INFO L82 PathProgramCache]: Analyzing trace with hash -700392400, now seen corresponding path program 285 times [2021-06-05 20:34:46,917 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:34:46,917 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2025555708] [2021-06-05 20:34:46,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:34:46,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:34:46,990 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:34:46,990 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:34:46,990 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2025555708] [2021-06-05 20:34:46,991 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2025555708] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:34:46,991 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:34:46,991 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 20:34:46,991 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [927243556] [2021-06-05 20:34:46,991 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 20:34:46,991 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:34:46,991 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 20:34:46,991 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:46,991 INFO L87 Difference]: Start difference. First operand 1228 states and 3287 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:47,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:34:47,151 INFO L93 Difference]: Finished difference Result 1374 states and 3642 transitions. [2021-06-05 20:34:47,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 20:34:47,151 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:34:47,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:34:47,152 INFO L225 Difference]: With dead ends: 1374 [2021-06-05 20:34:47,152 INFO L226 Difference]: Without dead ends: 1287 [2021-06-05 20:34:47,153 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 63.6ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:47,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1287 states. [2021-06-05 20:34:47,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1287 to 1225. [2021-06-05 20:34:47,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1225 states, 1224 states have (on average 2.6756535947712417) internal successors, (3275), 1224 states have internal predecessors, (3275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:47,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1225 states to 1225 states and 3275 transitions. [2021-06-05 20:34:47,164 INFO L78 Accepts]: Start accepts. Automaton has 1225 states and 3275 transitions. Word has length 26 [2021-06-05 20:34:47,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:34:47,164 INFO L482 AbstractCegarLoop]: Abstraction has 1225 states and 3275 transitions. [2021-06-05 20:34:47,164 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:47,164 INFO L276 IsEmpty]: Start isEmpty. Operand 1225 states and 3275 transitions. [2021-06-05 20:34:47,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:34:47,165 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:34:47,165 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:34:47,165 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable286 [2021-06-05 20:34:47,166 INFO L430 AbstractCegarLoop]: === Iteration 288 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:34:47,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:34:47,166 INFO L82 PathProgramCache]: Analyzing trace with hash 1419545292, now seen corresponding path program 286 times [2021-06-05 20:34:47,166 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:34:47,166 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1176986231] [2021-06-05 20:34:47,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:34:47,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:34:47,224 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:34:47,224 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:34:47,224 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1176986231] [2021-06-05 20:34:47,224 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1176986231] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:34:47,224 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:34:47,224 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 20:34:47,224 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1792514252] [2021-06-05 20:34:47,224 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 20:34:47,224 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:34:47,224 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 20:34:47,224 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:47,225 INFO L87 Difference]: Start difference. First operand 1225 states and 3275 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:47,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:34:47,397 INFO L93 Difference]: Finished difference Result 1354 states and 3596 transitions. [2021-06-05 20:34:47,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 20:34:47,398 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:34:47,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:34:47,399 INFO L225 Difference]: With dead ends: 1354 [2021-06-05 20:34:47,399 INFO L226 Difference]: Without dead ends: 1252 [2021-06-05 20:34:47,399 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 50.7ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:47,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1252 states. [2021-06-05 20:34:47,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1252 to 1223. [2021-06-05 20:34:47,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1223 states, 1222 states have (on average 2.6783960720130935) internal successors, (3273), 1222 states have internal predecessors, (3273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:47,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1223 states to 1223 states and 3273 transitions. [2021-06-05 20:34:47,410 INFO L78 Accepts]: Start accepts. Automaton has 1223 states and 3273 transitions. Word has length 26 [2021-06-05 20:34:47,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:34:47,410 INFO L482 AbstractCegarLoop]: Abstraction has 1223 states and 3273 transitions. [2021-06-05 20:34:47,410 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:47,410 INFO L276 IsEmpty]: Start isEmpty. Operand 1223 states and 3273 transitions. [2021-06-05 20:34:47,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:34:47,411 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:34:47,411 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:34:47,411 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable287 [2021-06-05 20:34:47,412 INFO L430 AbstractCegarLoop]: === Iteration 289 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:34:47,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:34:47,412 INFO L82 PathProgramCache]: Analyzing trace with hash -638181704, now seen corresponding path program 287 times [2021-06-05 20:34:47,412 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:34:47,412 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1129729357] [2021-06-05 20:34:47,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:34:47,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:34:47,468 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:34:47,468 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:34:47,468 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1129729357] [2021-06-05 20:34:47,468 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1129729357] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:34:47,468 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:34:47,468 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 20:34:47,468 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031832459] [2021-06-05 20:34:47,468 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 20:34:47,468 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:34:47,468 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 20:34:47,468 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:47,468 INFO L87 Difference]: Start difference. First operand 1223 states and 3273 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:47,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:34:47,629 INFO L93 Difference]: Finished difference Result 1345 states and 3575 transitions. [2021-06-05 20:34:47,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 20:34:47,630 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:34:47,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:34:47,631 INFO L225 Difference]: With dead ends: 1345 [2021-06-05 20:34:47,631 INFO L226 Difference]: Without dead ends: 1248 [2021-06-05 20:34:47,631 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 48.9ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:47,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1248 states. [2021-06-05 20:34:47,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1248 to 1222. [2021-06-05 20:34:47,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1222 states, 1221 states have (on average 2.678132678132678) internal successors, (3270), 1221 states have internal predecessors, (3270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:47,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1222 states to 1222 states and 3270 transitions. [2021-06-05 20:34:47,642 INFO L78 Accepts]: Start accepts. Automaton has 1222 states and 3270 transitions. Word has length 26 [2021-06-05 20:34:47,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:34:47,642 INFO L482 AbstractCegarLoop]: Abstraction has 1222 states and 3270 transitions. [2021-06-05 20:34:47,642 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:47,642 INFO L276 IsEmpty]: Start isEmpty. Operand 1222 states and 3270 transitions. [2021-06-05 20:34:47,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:34:47,643 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:34:47,644 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:34:47,644 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable288 [2021-06-05 20:34:47,644 INFO L430 AbstractCegarLoop]: === Iteration 290 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:34:47,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:34:47,644 INFO L82 PathProgramCache]: Analyzing trace with hash -2030326250, now seen corresponding path program 288 times [2021-06-05 20:34:47,644 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:34:47,644 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [126792411] [2021-06-05 20:34:47,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:34:47,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:34:47,699 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:34:47,699 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:34:47,699 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [126792411] [2021-06-05 20:34:47,699 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [126792411] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:34:47,699 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:34:47,699 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 20:34:47,699 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [459220329] [2021-06-05 20:34:47,700 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 20:34:47,700 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:34:47,700 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 20:34:47,700 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:47,700 INFO L87 Difference]: Start difference. First operand 1222 states and 3270 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:47,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:34:47,861 INFO L93 Difference]: Finished difference Result 1347 states and 3575 transitions. [2021-06-05 20:34:47,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 20:34:47,862 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:34:47,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:34:47,863 INFO L225 Difference]: With dead ends: 1347 [2021-06-05 20:34:47,863 INFO L226 Difference]: Without dead ends: 1226 [2021-06-05 20:34:47,863 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 48.5ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:47,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1226 states. [2021-06-05 20:34:47,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1226 to 1190. [2021-06-05 20:34:47,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1190 states, 1189 states have (on average 2.686291000841043) internal successors, (3194), 1189 states have internal predecessors, (3194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:47,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1190 states to 1190 states and 3194 transitions. [2021-06-05 20:34:47,874 INFO L78 Accepts]: Start accepts. Automaton has 1190 states and 3194 transitions. Word has length 26 [2021-06-05 20:34:47,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:34:47,874 INFO L482 AbstractCegarLoop]: Abstraction has 1190 states and 3194 transitions. [2021-06-05 20:34:47,874 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:47,874 INFO L276 IsEmpty]: Start isEmpty. Operand 1190 states and 3194 transitions. [2021-06-05 20:34:47,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:34:47,875 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:34:47,875 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:34:47,875 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable289 [2021-06-05 20:34:47,875 INFO L430 AbstractCegarLoop]: === Iteration 291 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:34:47,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:34:47,876 INFO L82 PathProgramCache]: Analyzing trace with hash -979168576, now seen corresponding path program 289 times [2021-06-05 20:34:47,876 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:34:47,876 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2100087172] [2021-06-05 20:34:47,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:34:47,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:34:47,923 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:34:47,923 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:34:47,923 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2100087172] [2021-06-05 20:34:47,923 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2100087172] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:34:47,923 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:34:47,924 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:34:47,924 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1343488415] [2021-06-05 20:34:47,924 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-05 20:34:47,924 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:34:47,924 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-05 20:34:47,924 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:34:47,924 INFO L87 Difference]: Start difference. First operand 1190 states and 3194 transitions. Second operand has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:48,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:34:48,042 INFO L93 Difference]: Finished difference Result 1469 states and 3888 transitions. [2021-06-05 20:34:48,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-05 20:34:48,043 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:34:48,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:34:48,044 INFO L225 Difference]: With dead ends: 1469 [2021-06-05 20:34:48,044 INFO L226 Difference]: Without dead ends: 1294 [2021-06-05 20:34:48,044 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 39.4ms TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:34:48,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1294 states. [2021-06-05 20:34:48,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1294 to 1264. [2021-06-05 20:34:48,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1264 states, 1263 states have (on average 2.66270783847981) internal successors, (3363), 1263 states have internal predecessors, (3363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:48,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1264 states to 1264 states and 3363 transitions. [2021-06-05 20:34:48,061 INFO L78 Accepts]: Start accepts. Automaton has 1264 states and 3363 transitions. Word has length 26 [2021-06-05 20:34:48,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:34:48,061 INFO L482 AbstractCegarLoop]: Abstraction has 1264 states and 3363 transitions. [2021-06-05 20:34:48,061 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:48,061 INFO L276 IsEmpty]: Start isEmpty. Operand 1264 states and 3363 transitions. [2021-06-05 20:34:48,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:34:48,062 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:34:48,062 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:34:48,062 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable290 [2021-06-05 20:34:48,062 INFO L430 AbstractCegarLoop]: === Iteration 292 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:34:48,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:34:48,062 INFO L82 PathProgramCache]: Analyzing trace with hash -1887419712, now seen corresponding path program 290 times [2021-06-05 20:34:48,062 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:34:48,062 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [382989409] [2021-06-05 20:34:48,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:34:48,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:34:48,108 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:34:48,109 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:34:48,109 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [382989409] [2021-06-05 20:34:48,109 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [382989409] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:34:48,109 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:34:48,109 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:34:48,109 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1742279567] [2021-06-05 20:34:48,109 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-05 20:34:48,109 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:34:48,109 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-05 20:34:48,109 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:34:48,109 INFO L87 Difference]: Start difference. First operand 1264 states and 3363 transitions. Second operand has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:48,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:34:48,228 INFO L93 Difference]: Finished difference Result 1463 states and 3865 transitions. [2021-06-05 20:34:48,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-05 20:34:48,229 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:34:48,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:34:48,230 INFO L225 Difference]: With dead ends: 1463 [2021-06-05 20:34:48,230 INFO L226 Difference]: Without dead ends: 1305 [2021-06-05 20:34:48,230 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 39.4ms TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:34:48,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1305 states. [2021-06-05 20:34:48,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1305 to 1277. [2021-06-05 20:34:48,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1277 states, 1276 states have (on average 2.6504702194357366) internal successors, (3382), 1276 states have internal predecessors, (3382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:48,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1277 states to 1277 states and 3382 transitions. [2021-06-05 20:34:48,241 INFO L78 Accepts]: Start accepts. Automaton has 1277 states and 3382 transitions. Word has length 26 [2021-06-05 20:34:48,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:34:48,241 INFO L482 AbstractCegarLoop]: Abstraction has 1277 states and 3382 transitions. [2021-06-05 20:34:48,241 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:48,241 INFO L276 IsEmpty]: Start isEmpty. Operand 1277 states and 3382 transitions. [2021-06-05 20:34:48,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:34:48,243 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:34:48,243 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:34:48,243 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable291 [2021-06-05 20:34:48,243 INFO L430 AbstractCegarLoop]: === Iteration 293 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:34:48,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:34:48,243 INFO L82 PathProgramCache]: Analyzing trace with hash -966843746, now seen corresponding path program 291 times [2021-06-05 20:34:48,243 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:34:48,243 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1918467561] [2021-06-05 20:34:48,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:34:48,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:34:48,289 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:34:48,289 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:34:48,289 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1918467561] [2021-06-05 20:34:48,289 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1918467561] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:34:48,289 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:34:48,289 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:34:48,289 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [704958623] [2021-06-05 20:34:48,289 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-05 20:34:48,289 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:34:48,290 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-05 20:34:48,290 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:34:48,290 INFO L87 Difference]: Start difference. First operand 1277 states and 3382 transitions. Second operand has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:48,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:34:48,410 INFO L93 Difference]: Finished difference Result 1480 states and 3886 transitions. [2021-06-05 20:34:48,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-05 20:34:48,410 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:34:48,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:34:48,412 INFO L225 Difference]: With dead ends: 1480 [2021-06-05 20:34:48,412 INFO L226 Difference]: Without dead ends: 1330 [2021-06-05 20:34:48,412 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 39.3ms TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:34:48,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1330 states. [2021-06-05 20:34:48,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1330 to 1268. [2021-06-05 20:34:48,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1268 states, 1267 states have (on average 2.6479873717442777) internal successors, (3355), 1267 states have internal predecessors, (3355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:48,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1268 states to 1268 states and 3355 transitions. [2021-06-05 20:34:48,424 INFO L78 Accepts]: Start accepts. Automaton has 1268 states and 3355 transitions. Word has length 26 [2021-06-05 20:34:48,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:34:48,424 INFO L482 AbstractCegarLoop]: Abstraction has 1268 states and 3355 transitions. [2021-06-05 20:34:48,424 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:48,424 INFO L276 IsEmpty]: Start isEmpty. Operand 1268 states and 3355 transitions. [2021-06-05 20:34:48,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:34:48,425 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:34:48,425 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:34:48,425 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable292 [2021-06-05 20:34:48,425 INFO L430 AbstractCegarLoop]: === Iteration 294 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:34:48,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:34:48,426 INFO L82 PathProgramCache]: Analyzing trace with hash -690570134, now seen corresponding path program 292 times [2021-06-05 20:34:48,426 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:34:48,426 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1243884688] [2021-06-05 20:34:48,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:34:48,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:34:48,474 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:34:48,474 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:34:48,474 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1243884688] [2021-06-05 20:34:48,475 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1243884688] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:34:48,475 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:34:48,475 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:34:48,475 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1072005992] [2021-06-05 20:34:48,475 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-05 20:34:48,475 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:34:48,475 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-05 20:34:48,475 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:34:48,475 INFO L87 Difference]: Start difference. First operand 1268 states and 3355 transitions. Second operand has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:48,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:34:48,596 INFO L93 Difference]: Finished difference Result 1405 states and 3686 transitions. [2021-06-05 20:34:48,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-05 20:34:48,596 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:34:48,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:34:48,597 INFO L225 Difference]: With dead ends: 1405 [2021-06-05 20:34:48,597 INFO L226 Difference]: Without dead ends: 1180 [2021-06-05 20:34:48,598 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 39.8ms TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:34:48,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1180 states. [2021-06-05 20:34:48,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1180 to 1124. [2021-06-05 20:34:48,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1124 states, 1123 states have (on average 2.646482635796972) internal successors, (2972), 1123 states have internal predecessors, (2972), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:48,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1124 states to 1124 states and 2972 transitions. [2021-06-05 20:34:48,608 INFO L78 Accepts]: Start accepts. Automaton has 1124 states and 2972 transitions. Word has length 26 [2021-06-05 20:34:48,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:34:48,608 INFO L482 AbstractCegarLoop]: Abstraction has 1124 states and 2972 transitions. [2021-06-05 20:34:48,608 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:48,608 INFO L276 IsEmpty]: Start isEmpty. Operand 1124 states and 2972 transitions. [2021-06-05 20:34:48,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:34:48,609 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:34:48,609 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:34:48,609 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable293 [2021-06-05 20:34:48,609 INFO L430 AbstractCegarLoop]: === Iteration 295 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:34:48,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:34:48,609 INFO L82 PathProgramCache]: Analyzing trace with hash -1436945088, now seen corresponding path program 293 times [2021-06-05 20:34:48,609 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:34:48,610 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1799715764] [2021-06-05 20:34:48,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:34:48,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:34:48,655 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:34:48,655 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:34:48,655 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1799715764] [2021-06-05 20:34:48,655 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1799715764] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:34:48,655 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:34:48,655 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:34:48,655 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1504797115] [2021-06-05 20:34:48,655 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-05 20:34:48,655 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:34:48,656 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-05 20:34:48,656 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:34:48,656 INFO L87 Difference]: Start difference. First operand 1124 states and 2972 transitions. Second operand has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:48,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:34:48,775 INFO L93 Difference]: Finished difference Result 1284 states and 3343 transitions. [2021-06-05 20:34:48,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-05 20:34:48,776 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:34:48,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:34:48,777 INFO L225 Difference]: With dead ends: 1284 [2021-06-05 20:34:48,777 INFO L226 Difference]: Without dead ends: 1064 [2021-06-05 20:34:48,777 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 38.8ms TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:34:48,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1064 states. [2021-06-05 20:34:48,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1064 to 1040. [2021-06-05 20:34:48,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1040 states, 1039 states have (on average 2.6121270452358036) internal successors, (2714), 1039 states have internal predecessors, (2714), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:48,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1040 states to 1040 states and 2714 transitions. [2021-06-05 20:34:48,786 INFO L78 Accepts]: Start accepts. Automaton has 1040 states and 2714 transitions. Word has length 26 [2021-06-05 20:34:48,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:34:48,786 INFO L482 AbstractCegarLoop]: Abstraction has 1040 states and 2714 transitions. [2021-06-05 20:34:48,786 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:48,786 INFO L276 IsEmpty]: Start isEmpty. Operand 1040 states and 2714 transitions. [2021-06-05 20:34:48,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:34:48,787 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:34:48,787 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:34:48,787 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable294 [2021-06-05 20:34:48,787 INFO L430 AbstractCegarLoop]: === Iteration 296 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:34:48,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:34:48,788 INFO L82 PathProgramCache]: Analyzing trace with hash 1998437214, now seen corresponding path program 294 times [2021-06-05 20:34:48,788 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:34:48,788 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [151062680] [2021-06-05 20:34:48,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:34:48,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:34:48,841 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:34:48,841 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:34:48,841 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [151062680] [2021-06-05 20:34:48,841 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [151062680] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:34:48,841 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:34:48,841 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 20:34:48,841 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [362214132] [2021-06-05 20:34:48,841 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 20:34:48,841 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:34:48,842 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 20:34:48,842 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:48,842 INFO L87 Difference]: Start difference. First operand 1040 states and 2714 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:48,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:34:48,994 INFO L93 Difference]: Finished difference Result 1182 states and 3054 transitions. [2021-06-05 20:34:48,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 20:34:48,994 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:34:48,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:34:48,995 INFO L225 Difference]: With dead ends: 1182 [2021-06-05 20:34:48,995 INFO L226 Difference]: Without dead ends: 982 [2021-06-05 20:34:48,995 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 46.9ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:48,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 982 states. [2021-06-05 20:34:49,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 982 to 950. [2021-06-05 20:34:49,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 950 states, 949 states have (on average 2.6217070600632244) internal successors, (2488), 949 states have internal predecessors, (2488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:49,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 950 states to 950 states and 2488 transitions. [2021-06-05 20:34:49,004 INFO L78 Accepts]: Start accepts. Automaton has 950 states and 2488 transitions. Word has length 26 [2021-06-05 20:34:49,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:34:49,004 INFO L482 AbstractCegarLoop]: Abstraction has 950 states and 2488 transitions. [2021-06-05 20:34:49,004 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:49,004 INFO L276 IsEmpty]: Start isEmpty. Operand 950 states and 2488 transitions. [2021-06-05 20:34:49,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:34:49,005 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:34:49,005 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:34:49,005 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable295 [2021-06-05 20:34:49,005 INFO L430 AbstractCegarLoop]: === Iteration 297 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:34:49,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:34:49,005 INFO L82 PathProgramCache]: Analyzing trace with hash -1654753632, now seen corresponding path program 295 times [2021-06-05 20:34:49,005 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:34:49,006 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2127423653] [2021-06-05 20:34:49,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:34:49,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:34:49,059 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:34:49,060 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:34:49,060 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2127423653] [2021-06-05 20:34:49,060 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2127423653] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:34:49,060 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:34:49,060 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 20:34:49,060 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [772235050] [2021-06-05 20:34:49,060 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 20:34:49,060 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:34:49,060 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 20:34:49,060 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:49,060 INFO L87 Difference]: Start difference. First operand 950 states and 2488 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:49,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:34:49,219 INFO L93 Difference]: Finished difference Result 1068 states and 2776 transitions. [2021-06-05 20:34:49,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 20:34:49,220 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:34:49,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:34:49,220 INFO L225 Difference]: With dead ends: 1068 [2021-06-05 20:34:49,220 INFO L226 Difference]: Without dead ends: 975 [2021-06-05 20:34:49,221 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 47.6ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:49,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 975 states. [2021-06-05 20:34:49,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 975 to 956. [2021-06-05 20:34:49,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 956 states, 955 states have (on average 2.6157068062827227) internal successors, (2498), 955 states have internal predecessors, (2498), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:49,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 956 states to 956 states and 2498 transitions. [2021-06-05 20:34:49,229 INFO L78 Accepts]: Start accepts. Automaton has 956 states and 2498 transitions. Word has length 26 [2021-06-05 20:34:49,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:34:49,229 INFO L482 AbstractCegarLoop]: Abstraction has 956 states and 2498 transitions. [2021-06-05 20:34:49,229 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:49,229 INFO L276 IsEmpty]: Start isEmpty. Operand 956 states and 2498 transitions. [2021-06-05 20:34:49,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:34:49,230 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:34:49,230 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:34:49,230 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable296 [2021-06-05 20:34:49,230 INFO L430 AbstractCegarLoop]: === Iteration 298 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:34:49,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:34:49,230 INFO L82 PathProgramCache]: Analyzing trace with hash 1731962528, now seen corresponding path program 296 times [2021-06-05 20:34:49,231 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:34:49,231 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1018805468] [2021-06-05 20:34:49,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:34:49,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:34:49,285 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:34:49,285 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:34:49,285 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1018805468] [2021-06-05 20:34:49,285 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1018805468] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:34:49,285 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:34:49,285 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 20:34:49,285 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [902852453] [2021-06-05 20:34:49,285 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 20:34:49,285 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:34:49,285 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 20:34:49,285 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:49,286 INFO L87 Difference]: Start difference. First operand 956 states and 2498 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:49,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:34:49,442 INFO L93 Difference]: Finished difference Result 1078 states and 2806 transitions. [2021-06-05 20:34:49,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 20:34:49,442 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:34:49,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:34:49,443 INFO L225 Difference]: With dead ends: 1078 [2021-06-05 20:34:49,443 INFO L226 Difference]: Without dead ends: 1003 [2021-06-05 20:34:49,443 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 47.8ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:49,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1003 states. [2021-06-05 20:34:49,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1003 to 959. [2021-06-05 20:34:49,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 959 states, 958 states have (on average 2.6189979123173277) internal successors, (2509), 958 states have internal predecessors, (2509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:49,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 959 states to 959 states and 2509 transitions. [2021-06-05 20:34:49,452 INFO L78 Accepts]: Start accepts. Automaton has 959 states and 2509 transitions. Word has length 26 [2021-06-05 20:34:49,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:34:49,452 INFO L482 AbstractCegarLoop]: Abstraction has 959 states and 2509 transitions. [2021-06-05 20:34:49,452 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:49,452 INFO L276 IsEmpty]: Start isEmpty. Operand 959 states and 2509 transitions. [2021-06-05 20:34:49,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:34:49,453 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:34:49,453 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:34:49,453 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable297 [2021-06-05 20:34:49,453 INFO L430 AbstractCegarLoop]: === Iteration 299 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:34:49,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:34:49,453 INFO L82 PathProgramCache]: Analyzing trace with hash -1693560160, now seen corresponding path program 297 times [2021-06-05 20:34:49,453 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:34:49,453 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [755487443] [2021-06-05 20:34:49,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:34:49,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:34:49,507 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:34:49,507 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:34:49,507 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [755487443] [2021-06-05 20:34:49,507 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [755487443] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:34:49,507 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:34:49,507 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 20:34:49,508 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1855361729] [2021-06-05 20:34:49,508 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 20:34:49,508 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:34:49,508 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 20:34:49,508 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:49,508 INFO L87 Difference]: Start difference. First operand 959 states and 2509 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:49,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:34:49,664 INFO L93 Difference]: Finished difference Result 1113 states and 2881 transitions. [2021-06-05 20:34:49,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 20:34:49,664 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:34:49,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:34:49,665 INFO L225 Difference]: With dead ends: 1113 [2021-06-05 20:34:49,665 INFO L226 Difference]: Without dead ends: 981 [2021-06-05 20:34:49,665 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 47.6ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:49,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 981 states. [2021-06-05 20:34:49,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 981 to 941. [2021-06-05 20:34:49,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 941 states, 940 states have (on average 2.620212765957447) internal successors, (2463), 940 states have internal predecessors, (2463), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:49,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 941 states to 941 states and 2463 transitions. [2021-06-05 20:34:49,673 INFO L78 Accepts]: Start accepts. Automaton has 941 states and 2463 transitions. Word has length 26 [2021-06-05 20:34:49,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:34:49,674 INFO L482 AbstractCegarLoop]: Abstraction has 941 states and 2463 transitions. [2021-06-05 20:34:49,674 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:49,674 INFO L276 IsEmpty]: Start isEmpty. Operand 941 states and 2463 transitions. [2021-06-05 20:34:49,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:34:49,674 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:34:49,674 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:34:49,674 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable298 [2021-06-05 20:34:49,675 INFO L430 AbstractCegarLoop]: === Iteration 300 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:34:49,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:34:49,675 INFO L82 PathProgramCache]: Analyzing trace with hash -1642428802, now seen corresponding path program 298 times [2021-06-05 20:34:49,675 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:34:49,675 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1274776483] [2021-06-05 20:34:49,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:34:49,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:34:49,729 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:34:49,729 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:34:49,729 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1274776483] [2021-06-05 20:34:49,729 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1274776483] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:34:49,729 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:34:49,729 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 20:34:49,729 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [50153844] [2021-06-05 20:34:49,729 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 20:34:49,729 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:34:49,729 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 20:34:49,730 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:49,730 INFO L87 Difference]: Start difference. First operand 941 states and 2463 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:49,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:34:49,885 INFO L93 Difference]: Finished difference Result 1045 states and 2715 transitions. [2021-06-05 20:34:49,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 20:34:49,885 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:34:49,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:34:49,886 INFO L225 Difference]: With dead ends: 1045 [2021-06-05 20:34:49,886 INFO L226 Difference]: Without dead ends: 955 [2021-06-05 20:34:49,886 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 47.6ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:49,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 955 states. [2021-06-05 20:34:49,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 955 to 926. [2021-06-05 20:34:49,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 926 states, 925 states have (on average 2.627027027027027) internal successors, (2430), 925 states have internal predecessors, (2430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:49,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 926 states to 926 states and 2430 transitions. [2021-06-05 20:34:49,894 INFO L78 Accepts]: Start accepts. Automaton has 926 states and 2430 transitions. Word has length 26 [2021-06-05 20:34:49,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:34:49,895 INFO L482 AbstractCegarLoop]: Abstraction has 926 states and 2430 transitions. [2021-06-05 20:34:49,895 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:49,895 INFO L276 IsEmpty]: Start isEmpty. Operand 926 states and 2430 transitions. [2021-06-05 20:34:49,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:34:49,895 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:34:49,895 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:34:49,895 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable299 [2021-06-05 20:34:49,896 INFO L430 AbstractCegarLoop]: === Iteration 301 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:34:49,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:34:49,896 INFO L82 PathProgramCache]: Analyzing trace with hash -363909022, now seen corresponding path program 299 times [2021-06-05 20:34:49,896 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:34:49,896 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [658291271] [2021-06-05 20:34:49,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:34:49,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:34:49,949 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:34:49,949 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:34:49,949 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [658291271] [2021-06-05 20:34:49,949 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [658291271] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:34:49,949 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:34:49,949 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 20:34:49,949 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1155777020] [2021-06-05 20:34:49,950 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 20:34:49,950 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:34:49,950 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 20:34:49,950 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:49,950 INFO L87 Difference]: Start difference. First operand 926 states and 2430 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:50,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:34:50,109 INFO L93 Difference]: Finished difference Result 1077 states and 2798 transitions. [2021-06-05 20:34:50,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 20:34:50,109 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:34:50,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:34:50,110 INFO L225 Difference]: With dead ends: 1077 [2021-06-05 20:34:50,110 INFO L226 Difference]: Without dead ends: 984 [2021-06-05 20:34:50,110 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 46.9ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:50,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 984 states. [2021-06-05 20:34:50,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 984 to 926. [2021-06-05 20:34:50,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 926 states, 925 states have (on average 2.6183783783783783) internal successors, (2422), 925 states have internal predecessors, (2422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:50,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 926 states to 926 states and 2422 transitions. [2021-06-05 20:34:50,119 INFO L78 Accepts]: Start accepts. Automaton has 926 states and 2422 transitions. Word has length 26 [2021-06-05 20:34:50,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:34:50,119 INFO L482 AbstractCegarLoop]: Abstraction has 926 states and 2422 transitions. [2021-06-05 20:34:50,119 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:50,119 INFO L276 IsEmpty]: Start isEmpty. Operand 926 states and 2422 transitions. [2021-06-05 20:34:50,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:34:50,120 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:34:50,120 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:34:50,120 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable300 [2021-06-05 20:34:50,120 INFO L430 AbstractCegarLoop]: === Iteration 302 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:34:50,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:34:50,120 INFO L82 PathProgramCache]: Analyzing trace with hash 2143601274, now seen corresponding path program 300 times [2021-06-05 20:34:50,120 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:34:50,120 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [373059266] [2021-06-05 20:34:50,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:34:50,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:34:50,183 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:34:50,183 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:34:50,183 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [373059266] [2021-06-05 20:34:50,183 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [373059266] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:34:50,183 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:34:50,183 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 20:34:50,183 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [10302536] [2021-06-05 20:34:50,183 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 20:34:50,183 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:34:50,183 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 20:34:50,183 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:50,183 INFO L87 Difference]: Start difference. First operand 926 states and 2422 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:50,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:34:50,338 INFO L93 Difference]: Finished difference Result 1095 states and 2837 transitions. [2021-06-05 20:34:50,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 20:34:50,338 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:34:50,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:34:50,339 INFO L225 Difference]: With dead ends: 1095 [2021-06-05 20:34:50,339 INFO L226 Difference]: Without dead ends: 1012 [2021-06-05 20:34:50,340 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 55.8ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:50,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1012 states. [2021-06-05 20:34:50,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1012 to 914. [2021-06-05 20:34:50,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 914 states, 913 states have (on average 2.623220153340635) internal successors, (2395), 913 states have internal predecessors, (2395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:50,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 914 states to 914 states and 2395 transitions. [2021-06-05 20:34:50,348 INFO L78 Accepts]: Start accepts. Automaton has 914 states and 2395 transitions. Word has length 26 [2021-06-05 20:34:50,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:34:50,348 INFO L482 AbstractCegarLoop]: Abstraction has 914 states and 2395 transitions. [2021-06-05 20:34:50,348 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:50,348 INFO L276 IsEmpty]: Start isEmpty. Operand 914 states and 2395 transitions. [2021-06-05 20:34:50,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:34:50,349 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:34:50,349 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:34:50,349 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable301 [2021-06-05 20:34:50,349 INFO L430 AbstractCegarLoop]: === Iteration 303 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:34:50,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:34:50,349 INFO L82 PathProgramCache]: Analyzing trace with hash 574672732, now seen corresponding path program 301 times [2021-06-05 20:34:50,350 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:34:50,350 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1981541442] [2021-06-05 20:34:50,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:34:50,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:34:50,403 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:34:50,403 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:34:50,403 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1981541442] [2021-06-05 20:34:50,403 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1981541442] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:34:50,403 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:34:50,403 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 20:34:50,404 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1970601901] [2021-06-05 20:34:50,404 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 20:34:50,404 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:34:50,404 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 20:34:50,404 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:50,404 INFO L87 Difference]: Start difference. First operand 914 states and 2395 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:50,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:34:50,562 INFO L93 Difference]: Finished difference Result 1015 states and 2644 transitions. [2021-06-05 20:34:50,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 20:34:50,562 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:34:50,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:34:50,563 INFO L225 Difference]: With dead ends: 1015 [2021-06-05 20:34:50,563 INFO L226 Difference]: Without dead ends: 928 [2021-06-05 20:34:50,563 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 47.3ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:50,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 928 states. [2021-06-05 20:34:50,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 928 to 876. [2021-06-05 20:34:50,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 876 states, 875 states have (on average 2.6285714285714286) internal successors, (2300), 875 states have internal predecessors, (2300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:50,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 876 states to 876 states and 2300 transitions. [2021-06-05 20:34:50,571 INFO L78 Accepts]: Start accepts. Automaton has 876 states and 2300 transitions. Word has length 26 [2021-06-05 20:34:50,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:34:50,572 INFO L482 AbstractCegarLoop]: Abstraction has 876 states and 2300 transitions. [2021-06-05 20:34:50,572 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:50,572 INFO L276 IsEmpty]: Start isEmpty. Operand 876 states and 2300 transitions. [2021-06-05 20:34:50,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:34:50,572 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:34:50,572 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:34:50,572 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable302 [2021-06-05 20:34:50,572 INFO L430 AbstractCegarLoop]: === Iteration 304 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:34:50,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:34:50,573 INFO L82 PathProgramCache]: Analyzing trace with hash 828357852, now seen corresponding path program 302 times [2021-06-05 20:34:50,573 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:34:50,573 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2139861883] [2021-06-05 20:34:50,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:34:50,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:34:50,627 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:34:50,627 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:34:50,627 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2139861883] [2021-06-05 20:34:50,627 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2139861883] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:34:50,627 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:34:50,627 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 20:34:50,628 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1380915735] [2021-06-05 20:34:50,628 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 20:34:50,628 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:34:50,628 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 20:34:50,628 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:50,628 INFO L87 Difference]: Start difference. First operand 876 states and 2300 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:50,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:34:50,779 INFO L93 Difference]: Finished difference Result 1024 states and 2650 transitions. [2021-06-05 20:34:50,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 20:34:50,780 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:34:50,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:34:50,781 INFO L225 Difference]: With dead ends: 1024 [2021-06-05 20:34:50,781 INFO L226 Difference]: Without dead ends: 949 [2021-06-05 20:34:50,781 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 47.8ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:50,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 949 states. [2021-06-05 20:34:50,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 949 to 881. [2021-06-05 20:34:50,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 881 states, 880 states have (on average 2.631818181818182) internal successors, (2316), 880 states have internal predecessors, (2316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:50,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 881 states to 881 states and 2316 transitions. [2021-06-05 20:34:50,789 INFO L78 Accepts]: Start accepts. Automaton has 881 states and 2316 transitions. Word has length 26 [2021-06-05 20:34:50,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:34:50,789 INFO L482 AbstractCegarLoop]: Abstraction has 881 states and 2316 transitions. [2021-06-05 20:34:50,789 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:50,789 INFO L276 IsEmpty]: Start isEmpty. Operand 881 states and 2316 transitions. [2021-06-05 20:34:50,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:34:50,790 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:34:50,790 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:34:50,790 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable303 [2021-06-05 20:34:50,790 INFO L430 AbstractCegarLoop]: === Iteration 305 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:34:50,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:34:50,790 INFO L82 PathProgramCache]: Analyzing trace with hash 1697802460, now seen corresponding path program 303 times [2021-06-05 20:34:50,790 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:34:50,790 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [456286727] [2021-06-05 20:34:50,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:34:50,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:34:50,855 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:34:50,855 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:34:50,855 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [456286727] [2021-06-05 20:34:50,855 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [456286727] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:34:50,855 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:34:50,855 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 20:34:50,855 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [852646183] [2021-06-05 20:34:50,855 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 20:34:50,855 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:34:50,856 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 20:34:50,856 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:50,856 INFO L87 Difference]: Start difference. First operand 881 states and 2316 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:51,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:34:51,011 INFO L93 Difference]: Finished difference Result 1013 states and 2642 transitions. [2021-06-05 20:34:51,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 20:34:51,012 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:34:51,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:34:51,012 INFO L225 Difference]: With dead ends: 1013 [2021-06-05 20:34:51,013 INFO L226 Difference]: Without dead ends: 912 [2021-06-05 20:34:51,013 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 47.5ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:51,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 912 states. [2021-06-05 20:34:51,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 912 to 880. [2021-06-05 20:34:51,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 880 states, 879 states have (on average 2.6302616609783844) internal successors, (2312), 879 states have internal predecessors, (2312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:51,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 880 states to 880 states and 2312 transitions. [2021-06-05 20:34:51,021 INFO L78 Accepts]: Start accepts. Automaton has 880 states and 2312 transitions. Word has length 26 [2021-06-05 20:34:51,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:34:51,021 INFO L482 AbstractCegarLoop]: Abstraction has 880 states and 2312 transitions. [2021-06-05 20:34:51,021 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:51,021 INFO L276 IsEmpty]: Start isEmpty. Operand 880 states and 2312 transitions. [2021-06-05 20:34:51,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:34:51,022 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:34:51,022 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:34:51,022 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable304 [2021-06-05 20:34:51,022 INFO L430 AbstractCegarLoop]: === Iteration 306 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:34:51,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:34:51,022 INFO L82 PathProgramCache]: Analyzing trace with hash 229091230, now seen corresponding path program 304 times [2021-06-05 20:34:51,022 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:34:51,022 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1199391965] [2021-06-05 20:34:51,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:34:51,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:34:51,077 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:34:51,077 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:34:51,077 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1199391965] [2021-06-05 20:34:51,077 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1199391965] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:34:51,077 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:34:51,077 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 20:34:51,077 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1806844515] [2021-06-05 20:34:51,078 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 20:34:51,078 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:34:51,078 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 20:34:51,078 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:51,078 INFO L87 Difference]: Start difference. First operand 880 states and 2312 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:51,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:34:51,230 INFO L93 Difference]: Finished difference Result 1005 states and 2609 transitions. [2021-06-05 20:34:51,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 20:34:51,230 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:34:51,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:34:51,231 INFO L225 Difference]: With dead ends: 1005 [2021-06-05 20:34:51,231 INFO L226 Difference]: Without dead ends: 924 [2021-06-05 20:34:51,231 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 48.0ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:51,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 924 states. [2021-06-05 20:34:51,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 924 to 882. [2021-06-05 20:34:51,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 882 states, 881 states have (on average 2.633371169125993) internal successors, (2320), 881 states have internal predecessors, (2320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:51,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 882 states to 882 states and 2320 transitions. [2021-06-05 20:34:51,239 INFO L78 Accepts]: Start accepts. Automaton has 882 states and 2320 transitions. Word has length 26 [2021-06-05 20:34:51,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:34:51,239 INFO L482 AbstractCegarLoop]: Abstraction has 882 states and 2320 transitions. [2021-06-05 20:34:51,239 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:51,240 INFO L276 IsEmpty]: Start isEmpty. Operand 882 states and 2320 transitions. [2021-06-05 20:34:51,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:34:51,240 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:34:51,240 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:34:51,240 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable305 [2021-06-05 20:34:51,240 INFO L430 AbstractCegarLoop]: === Iteration 307 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:34:51,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:34:51,241 INFO L82 PathProgramCache]: Analyzing trace with hash 621549886, now seen corresponding path program 305 times [2021-06-05 20:34:51,241 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:34:51,241 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1829871726] [2021-06-05 20:34:51,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:34:51,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:34:51,305 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:34:51,305 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:34:51,305 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1829871726] [2021-06-05 20:34:51,305 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1829871726] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:34:51,305 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:34:51,305 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 20:34:51,305 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [674285506] [2021-06-05 20:34:51,305 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 20:34:51,305 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:34:51,306 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 20:34:51,306 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:51,306 INFO L87 Difference]: Start difference. First operand 882 states and 2320 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:51,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:34:51,458 INFO L93 Difference]: Finished difference Result 1011 states and 2638 transitions. [2021-06-05 20:34:51,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 20:34:51,459 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:34:51,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:34:51,460 INFO L225 Difference]: With dead ends: 1011 [2021-06-05 20:34:51,460 INFO L226 Difference]: Without dead ends: 936 [2021-06-05 20:34:51,460 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 57.6ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:51,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 936 states. [2021-06-05 20:34:51,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 936 to 886. [2021-06-05 20:34:51,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 886 states, 885 states have (on average 2.6372881355932205) internal successors, (2334), 885 states have internal predecessors, (2334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:51,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 886 states to 886 states and 2334 transitions. [2021-06-05 20:34:51,468 INFO L78 Accepts]: Start accepts. Automaton has 886 states and 2334 transitions. Word has length 26 [2021-06-05 20:34:51,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:34:51,468 INFO L482 AbstractCegarLoop]: Abstraction has 886 states and 2334 transitions. [2021-06-05 20:34:51,468 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:51,468 INFO L276 IsEmpty]: Start isEmpty. Operand 886 states and 2334 transitions. [2021-06-05 20:34:51,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:34:51,469 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:34:51,469 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:34:51,469 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable306 [2021-06-05 20:34:51,469 INFO L430 AbstractCegarLoop]: === Iteration 308 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:34:51,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:34:51,469 INFO L82 PathProgramCache]: Analyzing trace with hash 1490994494, now seen corresponding path program 306 times [2021-06-05 20:34:51,469 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:34:51,469 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1969472086] [2021-06-05 20:34:51,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:34:51,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:34:51,523 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:34:51,524 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:34:51,524 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1969472086] [2021-06-05 20:34:51,524 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1969472086] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:34:51,524 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:34:51,524 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 20:34:51,524 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528453543] [2021-06-05 20:34:51,524 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 20:34:51,524 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:34:51,524 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 20:34:51,524 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:51,524 INFO L87 Difference]: Start difference. First operand 886 states and 2334 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:51,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:34:51,682 INFO L93 Difference]: Finished difference Result 1026 states and 2678 transitions. [2021-06-05 20:34:51,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 20:34:51,683 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:34:51,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:34:51,683 INFO L225 Difference]: With dead ends: 1026 [2021-06-05 20:34:51,684 INFO L226 Difference]: Without dead ends: 925 [2021-06-05 20:34:51,684 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 47.9ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:51,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 925 states. [2021-06-05 20:34:51,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 925 to 883. [2021-06-05 20:34:51,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 883 states, 882 states have (on average 2.6360544217687076) internal successors, (2325), 882 states have internal predecessors, (2325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:51,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 883 states to 883 states and 2325 transitions. [2021-06-05 20:34:51,692 INFO L78 Accepts]: Start accepts. Automaton has 883 states and 2325 transitions. Word has length 26 [2021-06-05 20:34:51,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:34:51,692 INFO L482 AbstractCegarLoop]: Abstraction has 883 states and 2325 transitions. [2021-06-05 20:34:51,692 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:51,692 INFO L276 IsEmpty]: Start isEmpty. Operand 883 states and 2325 transitions. [2021-06-05 20:34:51,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:34:51,693 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:34:51,693 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:34:51,693 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable307 [2021-06-05 20:34:51,693 INFO L430 AbstractCegarLoop]: === Iteration 309 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:34:51,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:34:51,693 INFO L82 PathProgramCache]: Analyzing trace with hash -883288932, now seen corresponding path program 307 times [2021-06-05 20:34:51,693 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:34:51,693 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [563769746] [2021-06-05 20:34:51,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:34:51,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:34:51,749 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:34:51,749 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:34:51,749 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [563769746] [2021-06-05 20:34:51,749 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [563769746] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:34:51,749 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:34:51,749 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 20:34:51,749 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197176628] [2021-06-05 20:34:51,749 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 20:34:51,749 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:34:51,750 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 20:34:51,750 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:51,750 INFO L87 Difference]: Start difference. First operand 883 states and 2325 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:51,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:34:51,903 INFO L93 Difference]: Finished difference Result 993 states and 2589 transitions. [2021-06-05 20:34:51,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 20:34:51,903 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:34:51,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:34:51,904 INFO L225 Difference]: With dead ends: 993 [2021-06-05 20:34:51,904 INFO L226 Difference]: Without dead ends: 912 [2021-06-05 20:34:51,904 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 49.6ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:51,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 912 states. [2021-06-05 20:34:51,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 912 to 884. [2021-06-05 20:34:51,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 884 states, 883 states have (on average 2.6342015855039635) internal successors, (2326), 883 states have internal predecessors, (2326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:51,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 884 states to 884 states and 2326 transitions. [2021-06-05 20:34:51,912 INFO L78 Accepts]: Start accepts. Automaton has 884 states and 2326 transitions. Word has length 26 [2021-06-05 20:34:51,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:34:51,912 INFO L482 AbstractCegarLoop]: Abstraction has 884 states and 2326 transitions. [2021-06-05 20:34:51,912 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:51,912 INFO L276 IsEmpty]: Start isEmpty. Operand 884 states and 2326 transitions. [2021-06-05 20:34:51,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:34:51,913 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:34:51,913 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:34:51,913 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable308 [2021-06-05 20:34:51,913 INFO L430 AbstractCegarLoop]: === Iteration 310 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:34:51,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:34:51,913 INFO L82 PathProgramCache]: Analyzing trace with hash 1236648760, now seen corresponding path program 308 times [2021-06-05 20:34:51,914 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:34:51,914 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [988110682] [2021-06-05 20:34:51,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:34:51,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:34:51,967 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:34:51,968 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:34:51,968 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [988110682] [2021-06-05 20:34:51,968 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [988110682] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:34:51,968 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:34:51,968 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 20:34:51,968 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [531520057] [2021-06-05 20:34:51,968 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 20:34:51,968 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:34:51,968 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 20:34:51,968 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:51,968 INFO L87 Difference]: Start difference. First operand 884 states and 2326 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:52,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:34:52,127 INFO L93 Difference]: Finished difference Result 999 states and 2604 transitions. [2021-06-05 20:34:52,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 20:34:52,127 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:34:52,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:34:52,128 INFO L225 Difference]: With dead ends: 999 [2021-06-05 20:34:52,128 INFO L226 Difference]: Without dead ends: 890 [2021-06-05 20:34:52,128 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 47.5ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:52,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 890 states. [2021-06-05 20:34:52,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 890 to 878. [2021-06-05 20:34:52,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 878 states, 877 states have (on average 2.637400228050171) internal successors, (2313), 877 states have internal predecessors, (2313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:52,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 878 states to 878 states and 2313 transitions. [2021-06-05 20:34:52,136 INFO L78 Accepts]: Start accepts. Automaton has 878 states and 2313 transitions. Word has length 26 [2021-06-05 20:34:52,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:34:52,136 INFO L482 AbstractCegarLoop]: Abstraction has 878 states and 2313 transitions. [2021-06-05 20:34:52,136 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:52,136 INFO L276 IsEmpty]: Start isEmpty. Operand 878 states and 2313 transitions. [2021-06-05 20:34:52,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:34:52,137 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:34:52,137 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:34:52,137 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable309 [2021-06-05 20:34:52,137 INFO L430 AbstractCegarLoop]: === Iteration 311 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:34:52,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:34:52,137 INFO L82 PathProgramCache]: Analyzing trace with hash 1741509376, now seen corresponding path program 309 times [2021-06-05 20:34:52,137 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:34:52,137 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1409853392] [2021-06-05 20:34:52,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:34:52,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:34:52,191 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:34:52,191 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:34:52,191 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1409853392] [2021-06-05 20:34:52,191 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1409853392] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:34:52,191 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:34:52,191 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 20:34:52,191 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [252748840] [2021-06-05 20:34:52,191 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 20:34:52,191 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:34:52,191 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 20:34:52,191 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:52,191 INFO L87 Difference]: Start difference. First operand 878 states and 2313 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:52,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:34:52,344 INFO L93 Difference]: Finished difference Result 1017 states and 2638 transitions. [2021-06-05 20:34:52,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 20:34:52,344 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:34:52,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:34:52,345 INFO L225 Difference]: With dead ends: 1017 [2021-06-05 20:34:52,345 INFO L226 Difference]: Without dead ends: 938 [2021-06-05 20:34:52,345 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 47.3ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:52,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 938 states. [2021-06-05 20:34:52,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 938 to 878. [2021-06-05 20:34:52,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 878 states, 877 states have (on average 2.637400228050171) internal successors, (2313), 877 states have internal predecessors, (2313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:52,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 878 states to 878 states and 2313 transitions. [2021-06-05 20:34:52,353 INFO L78 Accepts]: Start accepts. Automaton has 878 states and 2313 transitions. Word has length 26 [2021-06-05 20:34:52,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:34:52,353 INFO L482 AbstractCegarLoop]: Abstraction has 878 states and 2313 transitions. [2021-06-05 20:34:52,353 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:52,353 INFO L276 IsEmpty]: Start isEmpty. Operand 878 states and 2313 transitions. [2021-06-05 20:34:52,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:34:52,354 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:34:52,354 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:34:52,354 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable310 [2021-06-05 20:34:52,354 INFO L430 AbstractCegarLoop]: === Iteration 312 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:34:52,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:34:52,354 INFO L82 PathProgramCache]: Analyzing trace with hash 349364830, now seen corresponding path program 310 times [2021-06-05 20:34:52,354 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:34:52,354 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1364221283] [2021-06-05 20:34:52,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:34:52,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:34:52,418 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:34:52,418 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:34:52,418 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1364221283] [2021-06-05 20:34:52,418 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1364221283] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:34:52,418 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:34:52,418 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 20:34:52,418 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1766488082] [2021-06-05 20:34:52,418 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 20:34:52,418 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:34:52,419 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 20:34:52,419 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:52,419 INFO L87 Difference]: Start difference. First operand 878 states and 2313 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:52,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:34:52,569 INFO L93 Difference]: Finished difference Result 986 states and 2573 transitions. [2021-06-05 20:34:52,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 20:34:52,570 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:34:52,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:34:52,571 INFO L225 Difference]: With dead ends: 986 [2021-06-05 20:34:52,571 INFO L226 Difference]: Without dead ends: 900 [2021-06-05 20:34:52,571 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 57.1ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:52,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 900 states. [2021-06-05 20:34:52,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 900 to 871. [2021-06-05 20:34:52,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 871 states, 870 states have (on average 2.6390804597701147) internal successors, (2296), 870 states have internal predecessors, (2296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:52,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 871 states to 871 states and 2296 transitions. [2021-06-05 20:34:52,579 INFO L78 Accepts]: Start accepts. Automaton has 871 states and 2296 transitions. Word has length 26 [2021-06-05 20:34:52,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:34:52,579 INFO L482 AbstractCegarLoop]: Abstraction has 871 states and 2296 transitions. [2021-06-05 20:34:52,579 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:52,579 INFO L276 IsEmpty]: Start isEmpty. Operand 871 states and 2296 transitions. [2021-06-05 20:34:52,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:34:52,579 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:34:52,580 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:34:52,580 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable311 [2021-06-05 20:34:52,580 INFO L430 AbstractCegarLoop]: === Iteration 313 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:34:52,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:34:52,580 INFO L82 PathProgramCache]: Analyzing trace with hash 1139718326, now seen corresponding path program 311 times [2021-06-05 20:34:52,580 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:34:52,580 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [743380949] [2021-06-05 20:34:52,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:34:52,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:34:52,636 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:34:52,637 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:34:52,637 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [743380949] [2021-06-05 20:34:52,637 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [743380949] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:34:52,637 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:34:52,637 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 20:34:52,637 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [754491970] [2021-06-05 20:34:52,637 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 20:34:52,637 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:34:52,637 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 20:34:52,637 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:52,637 INFO L87 Difference]: Start difference. First operand 871 states and 2296 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:52,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:34:52,790 INFO L93 Difference]: Finished difference Result 1044 states and 2714 transitions. [2021-06-05 20:34:52,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 20:34:52,790 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:34:52,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:34:52,791 INFO L225 Difference]: With dead ends: 1044 [2021-06-05 20:34:52,791 INFO L226 Difference]: Without dead ends: 907 [2021-06-05 20:34:52,791 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 49.0ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:52,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 907 states. [2021-06-05 20:34:52,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 907 to 883. [2021-06-05 20:34:52,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 883 states, 882 states have (on average 2.6258503401360542) internal successors, (2316), 882 states have internal predecessors, (2316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:52,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 883 states to 883 states and 2316 transitions. [2021-06-05 20:34:52,799 INFO L78 Accepts]: Start accepts. Automaton has 883 states and 2316 transitions. Word has length 26 [2021-06-05 20:34:52,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:34:52,799 INFO L482 AbstractCegarLoop]: Abstraction has 883 states and 2316 transitions. [2021-06-05 20:34:52,799 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:52,799 INFO L276 IsEmpty]: Start isEmpty. Operand 883 states and 2316 transitions. [2021-06-05 20:34:52,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:34:52,800 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:34:52,800 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:34:52,800 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable312 [2021-06-05 20:34:52,800 INFO L430 AbstractCegarLoop]: === Iteration 314 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:34:52,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:34:52,800 INFO L82 PathProgramCache]: Analyzing trace with hash 231467190, now seen corresponding path program 312 times [2021-06-05 20:34:52,800 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:34:52,800 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [708305779] [2021-06-05 20:34:52,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:34:52,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:34:52,856 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:34:52,857 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:34:52,857 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [708305779] [2021-06-05 20:34:52,857 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [708305779] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:34:52,857 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:34:52,857 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 20:34:52,857 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [965737418] [2021-06-05 20:34:52,857 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 20:34:52,857 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:34:52,857 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 20:34:52,857 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:52,857 INFO L87 Difference]: Start difference. First operand 883 states and 2316 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:53,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:34:53,010 INFO L93 Difference]: Finished difference Result 1036 states and 2690 transitions. [2021-06-05 20:34:53,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 20:34:53,011 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:34:53,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:34:53,011 INFO L225 Difference]: With dead ends: 1036 [2021-06-05 20:34:53,012 INFO L226 Difference]: Without dead ends: 910 [2021-06-05 20:34:53,012 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 47.3ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:53,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 910 states. [2021-06-05 20:34:53,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 910 to 896. [2021-06-05 20:34:53,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 896 states, 895 states have (on average 2.611173184357542) internal successors, (2337), 895 states have internal predecessors, (2337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:53,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 896 states to 896 states and 2337 transitions. [2021-06-05 20:34:53,020 INFO L78 Accepts]: Start accepts. Automaton has 896 states and 2337 transitions. Word has length 26 [2021-06-05 20:34:53,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:34:53,020 INFO L482 AbstractCegarLoop]: Abstraction has 896 states and 2337 transitions. [2021-06-05 20:34:53,020 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:53,020 INFO L276 IsEmpty]: Start isEmpty. Operand 896 states and 2337 transitions. [2021-06-05 20:34:53,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:34:53,021 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:34:53,021 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:34:53,021 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable313 [2021-06-05 20:34:53,021 INFO L430 AbstractCegarLoop]: === Iteration 315 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:34:53,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:34:53,021 INFO L82 PathProgramCache]: Analyzing trace with hash 1152043156, now seen corresponding path program 313 times [2021-06-05 20:34:53,021 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:34:53,021 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1677125737] [2021-06-05 20:34:53,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:34:53,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:34:53,079 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:34:53,079 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:34:53,079 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1677125737] [2021-06-05 20:34:53,079 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1677125737] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:34:53,079 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:34:53,079 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 20:34:53,079 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1387681267] [2021-06-05 20:34:53,079 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 20:34:53,079 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:34:53,079 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 20:34:53,079 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:53,079 INFO L87 Difference]: Start difference. First operand 896 states and 2337 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:53,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:34:53,232 INFO L93 Difference]: Finished difference Result 1048 states and 2702 transitions. [2021-06-05 20:34:53,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 20:34:53,232 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:34:53,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:34:53,233 INFO L225 Difference]: With dead ends: 1048 [2021-06-05 20:34:53,233 INFO L226 Difference]: Without dead ends: 914 [2021-06-05 20:34:53,233 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 48.3ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:53,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 914 states. [2021-06-05 20:34:53,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 914 to 884. [2021-06-05 20:34:53,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 884 states, 883 states have (on average 2.6104190260475653) internal successors, (2305), 883 states have internal predecessors, (2305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:53,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 884 states to 884 states and 2305 transitions. [2021-06-05 20:34:53,241 INFO L78 Accepts]: Start accepts. Automaton has 884 states and 2305 transitions. Word has length 26 [2021-06-05 20:34:53,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:34:53,241 INFO L482 AbstractCegarLoop]: Abstraction has 884 states and 2305 transitions. [2021-06-05 20:34:53,241 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:53,241 INFO L276 IsEmpty]: Start isEmpty. Operand 884 states and 2305 transitions. [2021-06-05 20:34:53,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:34:53,242 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:34:53,242 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:34:53,242 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable314 [2021-06-05 20:34:53,242 INFO L430 AbstractCegarLoop]: === Iteration 316 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:34:53,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:34:53,242 INFO L82 PathProgramCache]: Analyzing trace with hash 622077484, now seen corresponding path program 314 times [2021-06-05 20:34:53,242 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:34:53,242 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [254336871] [2021-06-05 20:34:53,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:34:53,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:34:53,302 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:34:53,302 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:34:53,302 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [254336871] [2021-06-05 20:34:53,302 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [254336871] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:34:53,303 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:34:53,303 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 20:34:53,303 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1489924978] [2021-06-05 20:34:53,303 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 20:34:53,303 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:34:53,303 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 20:34:53,303 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:53,303 INFO L87 Difference]: Start difference. First operand 884 states and 2305 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:53,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:34:53,455 INFO L93 Difference]: Finished difference Result 1011 states and 2623 transitions. [2021-06-05 20:34:53,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 20:34:53,455 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:34:53,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:34:53,456 INFO L225 Difference]: With dead ends: 1011 [2021-06-05 20:34:53,456 INFO L226 Difference]: Without dead ends: 865 [2021-06-05 20:34:53,456 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 47.0ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:53,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 865 states. [2021-06-05 20:34:53,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 865 to 845. [2021-06-05 20:34:53,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 845 states, 844 states have (on average 2.625592417061611) internal successors, (2216), 844 states have internal predecessors, (2216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:53,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 845 states to 845 states and 2216 transitions. [2021-06-05 20:34:53,464 INFO L78 Accepts]: Start accepts. Automaton has 845 states and 2216 transitions. Word has length 26 [2021-06-05 20:34:53,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:34:53,464 INFO L482 AbstractCegarLoop]: Abstraction has 845 states and 2216 transitions. [2021-06-05 20:34:53,464 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:53,464 INFO L276 IsEmpty]: Start isEmpty. Operand 845 states and 2216 transitions. [2021-06-05 20:34:53,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:34:53,464 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:34:53,464 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:34:53,464 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable315 [2021-06-05 20:34:53,465 INFO L430 AbstractCegarLoop]: === Iteration 317 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:34:53,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:34:53,465 INFO L82 PathProgramCache]: Analyzing trace with hash -565570016, now seen corresponding path program 315 times [2021-06-05 20:34:53,465 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:34:53,465 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [745462448] [2021-06-05 20:34:53,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:34:53,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:34:53,514 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:34:53,515 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:34:53,515 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [745462448] [2021-06-05 20:34:53,515 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [745462448] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:34:53,515 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:34:53,515 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:34:53,515 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [525044250] [2021-06-05 20:34:53,515 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-05 20:34:53,515 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:34:53,515 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-05 20:34:53,515 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:34:53,515 INFO L87 Difference]: Start difference. First operand 845 states and 2216 transitions. Second operand has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:53,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:34:53,636 INFO L93 Difference]: Finished difference Result 978 states and 2521 transitions. [2021-06-05 20:34:53,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-05 20:34:53,636 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:34:53,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:34:53,637 INFO L225 Difference]: With dead ends: 978 [2021-06-05 20:34:53,637 INFO L226 Difference]: Without dead ends: 883 [2021-06-05 20:34:53,637 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 43.1ms TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:34:53,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 883 states. [2021-06-05 20:34:53,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 883 to 845. [2021-06-05 20:34:53,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 845 states, 844 states have (on average 2.6208530805687205) internal successors, (2212), 844 states have internal predecessors, (2212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:53,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 845 states to 845 states and 2212 transitions. [2021-06-05 20:34:53,645 INFO L78 Accepts]: Start accepts. Automaton has 845 states and 2212 transitions. Word has length 26 [2021-06-05 20:34:53,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:34:53,645 INFO L482 AbstractCegarLoop]: Abstraction has 845 states and 2212 transitions. [2021-06-05 20:34:53,645 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:53,645 INFO L276 IsEmpty]: Start isEmpty. Operand 845 states and 2212 transitions. [2021-06-05 20:34:53,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:34:53,645 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:34:53,645 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:34:53,646 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable316 [2021-06-05 20:34:53,646 INFO L430 AbstractCegarLoop]: === Iteration 318 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:34:53,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:34:53,646 INFO L82 PathProgramCache]: Analyzing trace with hash -1715038048, now seen corresponding path program 316 times [2021-06-05 20:34:53,646 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:34:53,646 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2040411939] [2021-06-05 20:34:53,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:34:53,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:34:53,701 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:34:53,701 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:34:53,701 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2040411939] [2021-06-05 20:34:53,701 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2040411939] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:34:53,701 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:34:53,701 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 20:34:53,702 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1569482614] [2021-06-05 20:34:53,702 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 20:34:53,702 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:34:53,702 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 20:34:53,702 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:53,702 INFO L87 Difference]: Start difference. First operand 845 states and 2212 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:53,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:34:53,857 INFO L93 Difference]: Finished difference Result 986 states and 2546 transitions. [2021-06-05 20:34:53,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 20:34:53,857 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:34:53,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:34:53,858 INFO L225 Difference]: With dead ends: 986 [2021-06-05 20:34:53,858 INFO L226 Difference]: Without dead ends: 911 [2021-06-05 20:34:53,858 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 47.7ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:53,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 911 states. [2021-06-05 20:34:53,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 911 to 857. [2021-06-05 20:34:53,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 857 states, 856 states have (on average 2.610981308411215) internal successors, (2235), 856 states have internal predecessors, (2235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:53,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 857 states to 857 states and 2235 transitions. [2021-06-05 20:34:53,866 INFO L78 Accepts]: Start accepts. Automaton has 857 states and 2235 transitions. Word has length 26 [2021-06-05 20:34:53,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:34:53,866 INFO L482 AbstractCegarLoop]: Abstraction has 857 states and 2235 transitions. [2021-06-05 20:34:53,866 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:53,866 INFO L276 IsEmpty]: Start isEmpty. Operand 857 states and 2235 transitions. [2021-06-05 20:34:53,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:34:53,867 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:34:53,867 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:34:53,867 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable317 [2021-06-05 20:34:53,867 INFO L430 AbstractCegarLoop]: === Iteration 319 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:34:53,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:34:53,867 INFO L82 PathProgramCache]: Analyzing trace with hash -845593440, now seen corresponding path program 317 times [2021-06-05 20:34:53,867 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:34:53,867 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [231672182] [2021-06-05 20:34:53,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:34:53,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:34:53,922 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:34:53,922 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:34:53,922 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [231672182] [2021-06-05 20:34:53,922 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [231672182] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:34:53,922 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:34:53,922 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 20:34:53,922 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [283343417] [2021-06-05 20:34:53,922 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 20:34:53,922 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:34:53,922 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 20:34:53,923 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:53,923 INFO L87 Difference]: Start difference. First operand 857 states and 2235 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:54,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:34:54,081 INFO L93 Difference]: Finished difference Result 988 states and 2567 transitions. [2021-06-05 20:34:54,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 20:34:54,082 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:34:54,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:34:54,082 INFO L225 Difference]: With dead ends: 988 [2021-06-05 20:34:54,082 INFO L226 Difference]: Without dead ends: 883 [2021-06-05 20:34:54,083 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 47.9ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:54,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 883 states. [2021-06-05 20:34:54,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 883 to 852. [2021-06-05 20:34:54,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 852 states, 851 states have (on average 2.602820211515864) internal successors, (2215), 851 states have internal predecessors, (2215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:54,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 852 states to 852 states and 2215 transitions. [2021-06-05 20:34:54,090 INFO L78 Accepts]: Start accepts. Automaton has 852 states and 2215 transitions. Word has length 26 [2021-06-05 20:34:54,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:34:54,090 INFO L482 AbstractCegarLoop]: Abstraction has 852 states and 2215 transitions. [2021-06-05 20:34:54,090 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:54,090 INFO L276 IsEmpty]: Start isEmpty. Operand 852 states and 2215 transitions. [2021-06-05 20:34:54,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:34:54,091 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:34:54,091 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:34:54,091 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable318 [2021-06-05 20:34:54,091 INFO L430 AbstractCegarLoop]: === Iteration 320 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:34:54,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:34:54,091 INFO L82 PathProgramCache]: Analyzing trace with hash 1075090430, now seen corresponding path program 318 times [2021-06-05 20:34:54,092 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:34:54,092 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [576090888] [2021-06-05 20:34:54,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:34:54,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:34:54,155 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:34:54,155 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:34:54,155 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [576090888] [2021-06-05 20:34:54,156 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [576090888] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:34:54,156 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:34:54,156 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 20:34:54,156 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1216864690] [2021-06-05 20:34:54,156 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 20:34:54,156 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:34:54,156 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 20:34:54,156 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:54,156 INFO L87 Difference]: Start difference. First operand 852 states and 2215 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:54,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:34:54,310 INFO L93 Difference]: Finished difference Result 953 states and 2465 transitions. [2021-06-05 20:34:54,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 20:34:54,311 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:34:54,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:34:54,311 INFO L225 Difference]: With dead ends: 953 [2021-06-05 20:34:54,311 INFO L226 Difference]: Without dead ends: 872 [2021-06-05 20:34:54,311 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 47.6ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:54,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 872 states. [2021-06-05 20:34:54,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 872 to 856. [2021-06-05 20:34:54,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 856 states, 855 states have (on average 2.601169590643275) internal successors, (2224), 855 states have internal predecessors, (2224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:54,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 856 states to 856 states and 2224 transitions. [2021-06-05 20:34:54,319 INFO L78 Accepts]: Start accepts. Automaton has 856 states and 2224 transitions. Word has length 26 [2021-06-05 20:34:54,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:34:54,319 INFO L482 AbstractCegarLoop]: Abstraction has 856 states and 2224 transitions. [2021-06-05 20:34:54,320 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:54,320 INFO L276 IsEmpty]: Start isEmpty. Operand 856 states and 2224 transitions. [2021-06-05 20:34:54,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:34:54,320 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:34:54,320 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:34:54,320 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable319 [2021-06-05 20:34:54,320 INFO L430 AbstractCegarLoop]: === Iteration 321 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:34:54,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:34:54,321 INFO L82 PathProgramCache]: Analyzing trace with hash -1099939174, now seen corresponding path program 319 times [2021-06-05 20:34:54,321 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:34:54,321 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [40115533] [2021-06-05 20:34:54,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:34:54,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:34:54,375 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:34:54,375 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:34:54,375 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [40115533] [2021-06-05 20:34:54,375 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [40115533] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:34:54,375 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:34:54,376 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 20:34:54,376 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2080691828] [2021-06-05 20:34:54,376 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 20:34:54,376 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:34:54,376 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 20:34:54,376 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:54,376 INFO L87 Difference]: Start difference. First operand 856 states and 2224 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:54,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:34:54,530 INFO L93 Difference]: Finished difference Result 967 states and 2502 transitions. [2021-06-05 20:34:54,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 20:34:54,530 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:34:54,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:34:54,531 INFO L225 Difference]: With dead ends: 967 [2021-06-05 20:34:54,531 INFO L226 Difference]: Without dead ends: 864 [2021-06-05 20:34:54,531 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 47.9ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:54,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 864 states. [2021-06-05 20:34:54,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 864 to 853. [2021-06-05 20:34:54,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 853 states, 852 states have (on average 2.603286384976526) internal successors, (2218), 852 states have internal predecessors, (2218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:54,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 853 states to 853 states and 2218 transitions. [2021-06-05 20:34:54,539 INFO L78 Accepts]: Start accepts. Automaton has 853 states and 2218 transitions. Word has length 26 [2021-06-05 20:34:54,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:34:54,539 INFO L482 AbstractCegarLoop]: Abstraction has 853 states and 2218 transitions. [2021-06-05 20:34:54,539 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:54,539 INFO L276 IsEmpty]: Start isEmpty. Operand 853 states and 2218 transitions. [2021-06-05 20:34:54,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:34:54,540 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:34:54,540 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:34:54,540 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable320 [2021-06-05 20:34:54,540 INFO L430 AbstractCegarLoop]: === Iteration 322 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:34:54,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:34:54,540 INFO L82 PathProgramCache]: Analyzing trace with hash -595078558, now seen corresponding path program 320 times [2021-06-05 20:34:54,540 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:34:54,540 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [397354226] [2021-06-05 20:34:54,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:34:54,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:34:54,599 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:34:54,599 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:34:54,599 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [397354226] [2021-06-05 20:34:54,599 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [397354226] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:34:54,599 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:34:54,599 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 20:34:54,599 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1752318438] [2021-06-05 20:34:54,599 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 20:34:54,599 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:34:54,599 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 20:34:54,599 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:54,599 INFO L87 Difference]: Start difference. First operand 853 states and 2218 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:54,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:34:54,755 INFO L93 Difference]: Finished difference Result 988 states and 2530 transitions. [2021-06-05 20:34:54,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 20:34:54,755 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:34:54,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:34:54,756 INFO L225 Difference]: With dead ends: 988 [2021-06-05 20:34:54,756 INFO L226 Difference]: Without dead ends: 905 [2021-06-05 20:34:54,756 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 51.7ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:54,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 905 states. [2021-06-05 20:34:54,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 905 to 849. [2021-06-05 20:34:54,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 849 states, 848 states have (on average 2.6014150943396226) internal successors, (2206), 848 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:54,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 849 states to 849 states and 2206 transitions. [2021-06-05 20:34:54,764 INFO L78 Accepts]: Start accepts. Automaton has 849 states and 2206 transitions. Word has length 26 [2021-06-05 20:34:54,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:34:54,764 INFO L482 AbstractCegarLoop]: Abstraction has 849 states and 2206 transitions. [2021-06-05 20:34:54,764 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:54,764 INFO L276 IsEmpty]: Start isEmpty. Operand 849 states and 2206 transitions. [2021-06-05 20:34:54,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:34:54,765 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:34:54,765 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:34:54,765 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable321 [2021-06-05 20:34:54,765 INFO L430 AbstractCegarLoop]: === Iteration 323 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:34:54,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:34:54,765 INFO L82 PathProgramCache]: Analyzing trace with hash -1987223104, now seen corresponding path program 321 times [2021-06-05 20:34:54,765 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:34:54,765 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1728037423] [2021-06-05 20:34:54,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:34:54,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:34:54,819 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:34:54,819 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:34:54,819 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1728037423] [2021-06-05 20:34:54,820 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1728037423] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:34:54,820 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:34:54,820 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 20:34:54,820 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [138177920] [2021-06-05 20:34:54,820 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 20:34:54,820 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:34:54,820 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 20:34:54,820 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:54,820 INFO L87 Difference]: Start difference. First operand 849 states and 2206 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:54,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:34:54,972 INFO L93 Difference]: Finished difference Result 951 states and 2457 transitions. [2021-06-05 20:34:54,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 20:34:54,973 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:34:54,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:34:54,973 INFO L225 Difference]: With dead ends: 951 [2021-06-05 20:34:54,973 INFO L226 Difference]: Without dead ends: 868 [2021-06-05 20:34:54,974 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 47.7ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:54,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 868 states. [2021-06-05 20:34:54,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 868 to 848. [2021-06-05 20:34:54,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 848 states, 847 states have (on average 2.5985832349468714) internal successors, (2201), 847 states have internal predecessors, (2201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:54,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 848 states to 848 states and 2201 transitions. [2021-06-05 20:34:54,981 INFO L78 Accepts]: Start accepts. Automaton has 848 states and 2201 transitions. Word has length 26 [2021-06-05 20:34:54,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:34:54,981 INFO L482 AbstractCegarLoop]: Abstraction has 848 states and 2201 transitions. [2021-06-05 20:34:54,981 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:54,982 INFO L276 IsEmpty]: Start isEmpty. Operand 848 states and 2201 transitions. [2021-06-05 20:34:54,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:34:54,982 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:34:54,982 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:34:54,982 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable322 [2021-06-05 20:34:54,982 INFO L430 AbstractCegarLoop]: === Iteration 324 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:34:54,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:34:54,983 INFO L82 PathProgramCache]: Analyzing trace with hash -254843420, now seen corresponding path program 322 times [2021-06-05 20:34:54,983 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:34:54,983 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [867693747] [2021-06-05 20:34:54,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:34:54,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:34:55,038 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:34:55,039 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:34:55,039 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [867693747] [2021-06-05 20:34:55,039 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [867693747] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:34:55,039 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:34:55,039 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 20:34:55,039 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1414205976] [2021-06-05 20:34:55,039 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 20:34:55,039 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:34:55,039 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 20:34:55,039 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:55,039 INFO L87 Difference]: Start difference. First operand 848 states and 2201 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:55,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:34:55,191 INFO L93 Difference]: Finished difference Result 963 states and 2484 transitions. [2021-06-05 20:34:55,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 20:34:55,191 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:34:55,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:34:55,192 INFO L225 Difference]: With dead ends: 963 [2021-06-05 20:34:55,192 INFO L226 Difference]: Without dead ends: 853 [2021-06-05 20:34:55,192 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 47.7ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:55,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 853 states. [2021-06-05 20:34:55,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 853 to 831. [2021-06-05 20:34:55,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 831 states, 830 states have (on average 2.603614457831325) internal successors, (2161), 830 states have internal predecessors, (2161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:55,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 831 states to 831 states and 2161 transitions. [2021-06-05 20:34:55,200 INFO L78 Accepts]: Start accepts. Automaton has 831 states and 2161 transitions. Word has length 26 [2021-06-05 20:34:55,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:34:55,200 INFO L482 AbstractCegarLoop]: Abstraction has 831 states and 2161 transitions. [2021-06-05 20:34:55,200 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:55,200 INFO L276 IsEmpty]: Start isEmpty. Operand 831 states and 2161 transitions. [2021-06-05 20:34:55,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:34:55,201 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:34:55,201 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:34:55,201 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable323 [2021-06-05 20:34:55,201 INFO L430 AbstractCegarLoop]: === Iteration 325 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:34:55,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:34:55,201 INFO L82 PathProgramCache]: Analyzing trace with hash 14312340, now seen corresponding path program 323 times [2021-06-05 20:34:55,201 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:34:55,201 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [100436652] [2021-06-05 20:34:55,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:34:55,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:34:55,255 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:34:55,256 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:34:55,256 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [100436652] [2021-06-05 20:34:55,256 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [100436652] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:34:55,256 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:34:55,256 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 20:34:55,256 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [975445671] [2021-06-05 20:34:55,256 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 20:34:55,256 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:34:55,256 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 20:34:55,256 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:55,256 INFO L87 Difference]: Start difference. First operand 831 states and 2161 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:55,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:34:55,409 INFO L93 Difference]: Finished difference Result 964 states and 2472 transitions. [2021-06-05 20:34:55,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 20:34:55,409 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:34:55,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:34:55,410 INFO L225 Difference]: With dead ends: 964 [2021-06-05 20:34:55,410 INFO L226 Difference]: Without dead ends: 883 [2021-06-05 20:34:55,410 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 47.8ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:55,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 883 states. [2021-06-05 20:34:55,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 883 to 827. [2021-06-05 20:34:55,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 827 states, 826 states have (on average 2.6053268765133173) internal successors, (2152), 826 states have internal predecessors, (2152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:55,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 827 states to 827 states and 2152 transitions. [2021-06-05 20:34:55,418 INFO L78 Accepts]: Start accepts. Automaton has 827 states and 2152 transitions. Word has length 26 [2021-06-05 20:34:55,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:34:55,418 INFO L482 AbstractCegarLoop]: Abstraction has 827 states and 2152 transitions. [2021-06-05 20:34:55,418 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:55,418 INFO L276 IsEmpty]: Start isEmpty. Operand 827 states and 2152 transitions. [2021-06-05 20:34:55,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:34:55,419 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:34:55,419 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:34:55,419 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable324 [2021-06-05 20:34:55,419 INFO L430 AbstractCegarLoop]: === Iteration 326 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:34:55,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:34:55,419 INFO L82 PathProgramCache]: Analyzing trace with hash 2134250032, now seen corresponding path program 324 times [2021-06-05 20:34:55,419 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:34:55,419 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1257934301] [2021-06-05 20:34:55,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:34:55,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:34:55,472 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:34:55,473 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:34:55,473 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1257934301] [2021-06-05 20:34:55,473 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1257934301] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:34:55,473 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:34:55,473 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 20:34:55,473 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [350295619] [2021-06-05 20:34:55,473 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 20:34:55,473 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:34:55,473 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 20:34:55,473 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:55,473 INFO L87 Difference]: Start difference. First operand 827 states and 2152 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:55,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:34:55,622 INFO L93 Difference]: Finished difference Result 932 states and 2411 transitions. [2021-06-05 20:34:55,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 20:34:55,623 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:34:55,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:34:55,623 INFO L225 Difference]: With dead ends: 932 [2021-06-05 20:34:55,623 INFO L226 Difference]: Without dead ends: 823 [2021-06-05 20:34:55,624 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 47.1ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:55,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 823 states. [2021-06-05 20:34:55,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 823 to 803. [2021-06-05 20:34:55,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 803 states, 802 states have (on average 2.614713216957606) internal successors, (2097), 802 states have internal predecessors, (2097), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:55,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 803 states to 803 states and 2097 transitions. [2021-06-05 20:34:55,631 INFO L78 Accepts]: Start accepts. Automaton has 803 states and 2097 transitions. Word has length 26 [2021-06-05 20:34:55,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:34:55,631 INFO L482 AbstractCegarLoop]: Abstraction has 803 states and 2097 transitions. [2021-06-05 20:34:55,631 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:55,631 INFO L276 IsEmpty]: Start isEmpty. Operand 803 states and 2097 transitions. [2021-06-05 20:34:55,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:34:55,632 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:34:55,632 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:34:55,632 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable325 [2021-06-05 20:34:55,632 INFO L430 AbstractCegarLoop]: === Iteration 327 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:34:55,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:34:55,632 INFO L82 PathProgramCache]: Analyzing trace with hash 398343630, now seen corresponding path program 325 times [2021-06-05 20:34:55,632 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:34:55,632 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2105063938] [2021-06-05 20:34:55,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:34:55,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:34:55,688 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:34:55,689 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:34:55,689 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2105063938] [2021-06-05 20:34:55,689 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2105063938] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:34:55,689 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:34:55,689 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 20:34:55,689 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [641501533] [2021-06-05 20:34:55,689 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 20:34:55,689 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:34:55,689 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 20:34:55,689 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:55,689 INFO L87 Difference]: Start difference. First operand 803 states and 2097 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:55,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:34:55,840 INFO L93 Difference]: Finished difference Result 925 states and 2372 transitions. [2021-06-05 20:34:55,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 20:34:55,840 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:34:55,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:34:55,841 INFO L225 Difference]: With dead ends: 925 [2021-06-05 20:34:55,841 INFO L226 Difference]: Without dead ends: 828 [2021-06-05 20:34:55,841 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 49.6ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:55,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 828 states. [2021-06-05 20:34:55,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 828 to 788. [2021-06-05 20:34:55,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 788 states, 787 states have (on average 2.60864040660737) internal successors, (2053), 787 states have internal predecessors, (2053), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:55,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 788 states to 788 states and 2053 transitions. [2021-06-05 20:34:55,848 INFO L78 Accepts]: Start accepts. Automaton has 788 states and 2053 transitions. Word has length 26 [2021-06-05 20:34:55,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:34:55,848 INFO L482 AbstractCegarLoop]: Abstraction has 788 states and 2053 transitions. [2021-06-05 20:34:55,848 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:55,848 INFO L276 IsEmpty]: Start isEmpty. Operand 788 states and 2053 transitions. [2021-06-05 20:34:55,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:34:55,849 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:34:55,849 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:34:55,849 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable326 [2021-06-05 20:34:55,849 INFO L430 AbstractCegarLoop]: === Iteration 328 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:34:55,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:34:55,849 INFO L82 PathProgramCache]: Analyzing trace with hash 707608110, now seen corresponding path program 326 times [2021-06-05 20:34:55,849 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:34:55,849 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [168242742] [2021-06-05 20:34:55,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:34:55,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:34:55,894 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:34:55,894 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:34:55,894 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [168242742] [2021-06-05 20:34:55,894 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [168242742] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:34:55,895 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:34:55,895 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:34:55,895 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1729358567] [2021-06-05 20:34:55,895 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-05 20:34:55,895 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:34:55,895 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-05 20:34:55,895 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:34:55,895 INFO L87 Difference]: Start difference. First operand 788 states and 2053 transitions. Second operand has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:56,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:34:56,013 INFO L93 Difference]: Finished difference Result 919 states and 2353 transitions. [2021-06-05 20:34:56,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-05 20:34:56,013 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:34:56,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:34:56,014 INFO L225 Difference]: With dead ends: 919 [2021-06-05 20:34:56,014 INFO L226 Difference]: Without dead ends: 826 [2021-06-05 20:34:56,014 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 38.7ms TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:34:56,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 826 states. [2021-06-05 20:34:56,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 826 to 788. [2021-06-05 20:34:56,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 788 states, 787 states have (on average 2.6035578144853875) internal successors, (2049), 787 states have internal predecessors, (2049), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:56,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 788 states to 788 states and 2049 transitions. [2021-06-05 20:34:56,021 INFO L78 Accepts]: Start accepts. Automaton has 788 states and 2049 transitions. Word has length 26 [2021-06-05 20:34:56,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:34:56,021 INFO L482 AbstractCegarLoop]: Abstraction has 788 states and 2049 transitions. [2021-06-05 20:34:56,021 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:56,021 INFO L276 IsEmpty]: Start isEmpty. Operand 788 states and 2049 transitions. [2021-06-05 20:34:56,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:34:56,022 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:34:56,022 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:34:56,022 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable327 [2021-06-05 20:34:56,022 INFO L430 AbstractCegarLoop]: === Iteration 329 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:34:56,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:34:56,022 INFO L82 PathProgramCache]: Analyzing trace with hash 1577052718, now seen corresponding path program 327 times [2021-06-05 20:34:56,022 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:34:56,022 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1520863691] [2021-06-05 20:34:56,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:34:56,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:34:56,078 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:34:56,079 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:34:56,079 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1520863691] [2021-06-05 20:34:56,079 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1520863691] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:34:56,079 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:34:56,079 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 20:34:56,079 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [413522506] [2021-06-05 20:34:56,079 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 20:34:56,079 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:34:56,079 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 20:34:56,079 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:56,079 INFO L87 Difference]: Start difference. First operand 788 states and 2049 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:56,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:34:56,225 INFO L93 Difference]: Finished difference Result 935 states and 2392 transitions. [2021-06-05 20:34:56,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 20:34:56,225 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:34:56,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:34:56,226 INFO L225 Difference]: With dead ends: 935 [2021-06-05 20:34:56,226 INFO L226 Difference]: Without dead ends: 666 [2021-06-05 20:34:56,226 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 47.0ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:56,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 666 states. [2021-06-05 20:34:56,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 666 to 594. [2021-06-05 20:34:56,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 594 states, 593 states have (on average 2.5548060708263067) internal successors, (1515), 593 states have internal predecessors, (1515), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:56,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 594 states to 594 states and 1515 transitions. [2021-06-05 20:34:56,232 INFO L78 Accepts]: Start accepts. Automaton has 594 states and 1515 transitions. Word has length 26 [2021-06-05 20:34:56,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:34:56,232 INFO L482 AbstractCegarLoop]: Abstraction has 594 states and 1515 transitions. [2021-06-05 20:34:56,232 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:56,232 INFO L276 IsEmpty]: Start isEmpty. Operand 594 states and 1515 transitions. [2021-06-05 20:34:56,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:34:56,232 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:34:56,232 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:34:56,232 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable328 [2021-06-05 20:34:56,232 INFO L430 AbstractCegarLoop]: === Iteration 330 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:34:56,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:34:56,233 INFO L82 PathProgramCache]: Analyzing trace with hash 1588992622, now seen corresponding path program 328 times [2021-06-05 20:34:56,233 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:34:56,233 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [46580024] [2021-06-05 20:34:56,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:34:56,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:34:56,288 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:34:56,288 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:34:56,289 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [46580024] [2021-06-05 20:34:56,289 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [46580024] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:34:56,289 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:34:56,289 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 20:34:56,289 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1801532037] [2021-06-05 20:34:56,289 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 20:34:56,289 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:34:56,289 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 20:34:56,289 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:56,289 INFO L87 Difference]: Start difference. First operand 594 states and 1515 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:56,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:34:56,442 INFO L93 Difference]: Finished difference Result 734 states and 1848 transitions. [2021-06-05 20:34:56,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 20:34:56,442 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:34:56,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:34:56,443 INFO L225 Difference]: With dead ends: 734 [2021-06-05 20:34:56,443 INFO L226 Difference]: Without dead ends: 633 [2021-06-05 20:34:56,443 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 49.1ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:56,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 633 states. [2021-06-05 20:34:56,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 633 to 570. [2021-06-05 20:34:56,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 570 states, 569 states have (on average 2.5606326889279436) internal successors, (1457), 569 states have internal predecessors, (1457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:56,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 570 states to 570 states and 1457 transitions. [2021-06-05 20:34:56,449 INFO L78 Accepts]: Start accepts. Automaton has 570 states and 1457 transitions. Word has length 26 [2021-06-05 20:34:56,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:34:56,449 INFO L482 AbstractCegarLoop]: Abstraction has 570 states and 1457 transitions. [2021-06-05 20:34:56,449 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:56,449 INFO L276 IsEmpty]: Start isEmpty. Operand 570 states and 1457 transitions. [2021-06-05 20:34:56,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:34:56,449 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:34:56,449 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:34:56,449 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable329 [2021-06-05 20:34:56,449 INFO L430 AbstractCegarLoop]: === Iteration 331 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:34:56,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:34:56,450 INFO L82 PathProgramCache]: Analyzing trace with hash -1836530066, now seen corresponding path program 329 times [2021-06-05 20:34:56,450 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:34:56,450 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [961129918] [2021-06-05 20:34:56,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:34:56,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:34:56,504 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:34:56,504 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:34:56,504 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [961129918] [2021-06-05 20:34:56,504 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [961129918] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:34:56,504 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:34:56,504 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 20:34:56,504 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2002707781] [2021-06-05 20:34:56,504 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 20:34:56,504 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:34:56,504 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 20:34:56,504 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:56,504 INFO L87 Difference]: Start difference. First operand 570 states and 1457 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:56,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:34:56,665 INFO L93 Difference]: Finished difference Result 694 states and 1767 transitions. [2021-06-05 20:34:56,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 20:34:56,666 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:34:56,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:34:56,666 INFO L225 Difference]: With dead ends: 694 [2021-06-05 20:34:56,666 INFO L226 Difference]: Without dead ends: 603 [2021-06-05 20:34:56,666 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 47.7ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:56,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 603 states. [2021-06-05 20:34:56,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 603 to 587. [2021-06-05 20:34:56,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 587 states, 586 states have (on average 2.5580204778157) internal successors, (1499), 586 states have internal predecessors, (1499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:56,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 587 states to 587 states and 1499 transitions. [2021-06-05 20:34:56,672 INFO L78 Accepts]: Start accepts. Automaton has 587 states and 1499 transitions. Word has length 26 [2021-06-05 20:34:56,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:34:56,672 INFO L482 AbstractCegarLoop]: Abstraction has 587 states and 1499 transitions. [2021-06-05 20:34:56,672 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:56,672 INFO L276 IsEmpty]: Start isEmpty. Operand 587 states and 1499 transitions. [2021-06-05 20:34:56,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:34:56,672 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:34:56,673 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:34:56,673 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable330 [2021-06-05 20:34:56,673 INFO L430 AbstractCegarLoop]: === Iteration 332 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:34:56,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:34:56,673 INFO L82 PathProgramCache]: Analyzing trace with hash -1024327478, now seen corresponding path program 330 times [2021-06-05 20:34:56,673 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:34:56,673 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2123746113] [2021-06-05 20:34:56,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:34:56,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:34:56,727 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:34:56,727 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:34:56,727 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2123746113] [2021-06-05 20:34:56,727 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2123746113] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:34:56,727 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:34:56,727 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 20:34:56,727 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1890874265] [2021-06-05 20:34:56,727 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 20:34:56,727 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:34:56,727 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 20:34:56,727 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:56,727 INFO L87 Difference]: Start difference. First operand 587 states and 1499 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:56,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:34:56,889 INFO L93 Difference]: Finished difference Result 696 states and 1770 transitions. [2021-06-05 20:34:56,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 20:34:56,889 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:34:56,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:34:56,890 INFO L225 Difference]: With dead ends: 696 [2021-06-05 20:34:56,890 INFO L226 Difference]: Without dead ends: 600 [2021-06-05 20:34:56,890 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 47.5ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:56,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 600 states. [2021-06-05 20:34:56,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 600 to 582. [2021-06-05 20:34:56,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 582 states, 581 states have (on average 2.5559380378657486) internal successors, (1485), 581 states have internal predecessors, (1485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:56,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 582 states to 582 states and 1485 transitions. [2021-06-05 20:34:56,895 INFO L78 Accepts]: Start accepts. Automaton has 582 states and 1485 transitions. Word has length 26 [2021-06-05 20:34:56,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:34:56,895 INFO L482 AbstractCegarLoop]: Abstraction has 582 states and 1485 transitions. [2021-06-05 20:34:56,895 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:56,895 INFO L276 IsEmpty]: Start isEmpty. Operand 582 states and 1485 transitions. [2021-06-05 20:34:56,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:34:56,896 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:34:56,896 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:34:56,896 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable331 [2021-06-05 20:34:56,896 INFO L430 AbstractCegarLoop]: === Iteration 333 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:34:56,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:34:56,896 INFO L82 PathProgramCache]: Analyzing trace with hash -2053741198, now seen corresponding path program 331 times [2021-06-05 20:34:56,896 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:34:56,896 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1857488889] [2021-06-05 20:34:56,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:34:56,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:34:56,949 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:34:56,949 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:34:56,950 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1857488889] [2021-06-05 20:34:56,950 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1857488889] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:34:56,950 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:34:56,950 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 20:34:56,950 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1193374881] [2021-06-05 20:34:56,950 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 20:34:56,950 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:34:56,950 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 20:34:56,950 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:56,950 INFO L87 Difference]: Start difference. First operand 582 states and 1485 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:57,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:34:57,101 INFO L93 Difference]: Finished difference Result 709 states and 1796 transitions. [2021-06-05 20:34:57,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 20:34:57,102 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:34:57,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:34:57,102 INFO L225 Difference]: With dead ends: 709 [2021-06-05 20:34:57,102 INFO L226 Difference]: Without dead ends: 586 [2021-06-05 20:34:57,102 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 47.1ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:57,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 586 states. [2021-06-05 20:34:57,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 586 to 570. [2021-06-05 20:34:57,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 570 states, 569 states have (on average 2.555360281195079) internal successors, (1454), 569 states have internal predecessors, (1454), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:57,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 570 states to 570 states and 1454 transitions. [2021-06-05 20:34:57,108 INFO L78 Accepts]: Start accepts. Automaton has 570 states and 1454 transitions. Word has length 26 [2021-06-05 20:34:57,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:34:57,108 INFO L482 AbstractCegarLoop]: Abstraction has 570 states and 1454 transitions. [2021-06-05 20:34:57,108 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:57,108 INFO L276 IsEmpty]: Start isEmpty. Operand 570 states and 1454 transitions. [2021-06-05 20:34:57,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:34:57,108 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:34:57,108 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:34:57,108 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable332 [2021-06-05 20:34:57,108 INFO L430 AbstractCegarLoop]: === Iteration 334 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:34:57,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:34:57,109 INFO L82 PathProgramCache]: Analyzing trace with hash 1380910604, now seen corresponding path program 332 times [2021-06-05 20:34:57,109 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:34:57,109 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [790009485] [2021-06-05 20:34:57,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:34:57,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:34:57,164 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:34:57,164 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:34:57,164 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [790009485] [2021-06-05 20:34:57,164 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [790009485] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:34:57,164 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:34:57,164 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 20:34:57,164 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [436038392] [2021-06-05 20:34:57,165 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 20:34:57,165 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:34:57,165 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 20:34:57,165 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:57,165 INFO L87 Difference]: Start difference. First operand 570 states and 1454 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:57,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:34:57,322 INFO L93 Difference]: Finished difference Result 694 states and 1757 transitions. [2021-06-05 20:34:57,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 20:34:57,322 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:34:57,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:34:57,322 INFO L225 Difference]: With dead ends: 694 [2021-06-05 20:34:57,322 INFO L226 Difference]: Without dead ends: 613 [2021-06-05 20:34:57,323 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 49.0ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:57,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 613 states. [2021-06-05 20:34:57,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 613 to 569. [2021-06-05 20:34:57,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 569 states, 568 states have (on average 2.556338028169014) internal successors, (1452), 568 states have internal predecessors, (1452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:57,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 569 states to 569 states and 1452 transitions. [2021-06-05 20:34:57,328 INFO L78 Accepts]: Start accepts. Automaton has 569 states and 1452 transitions. Word has length 26 [2021-06-05 20:34:57,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:34:57,328 INFO L482 AbstractCegarLoop]: Abstraction has 569 states and 1452 transitions. [2021-06-05 20:34:57,328 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:57,328 INFO L276 IsEmpty]: Start isEmpty. Operand 569 states and 1452 transitions. [2021-06-05 20:34:57,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:34:57,328 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:34:57,329 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:34:57,329 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable333 [2021-06-05 20:34:57,329 INFO L430 AbstractCegarLoop]: === Iteration 335 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:34:57,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:34:57,329 INFO L82 PathProgramCache]: Analyzing trace with hash -2044612084, now seen corresponding path program 333 times [2021-06-05 20:34:57,329 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:34:57,329 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1213574170] [2021-06-05 20:34:57,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:34:57,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:34:57,398 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:34:57,398 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:34:57,398 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1213574170] [2021-06-05 20:34:57,398 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1213574170] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:34:57,398 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:34:57,398 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 20:34:57,398 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [77114372] [2021-06-05 20:34:57,398 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 20:34:57,398 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:34:57,399 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 20:34:57,399 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:57,399 INFO L87 Difference]: Start difference. First operand 569 states and 1452 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:57,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:34:57,573 INFO L93 Difference]: Finished difference Result 696 states and 1757 transitions. [2021-06-05 20:34:57,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 20:34:57,573 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:34:57,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:34:57,574 INFO L225 Difference]: With dead ends: 696 [2021-06-05 20:34:57,574 INFO L226 Difference]: Without dead ends: 605 [2021-06-05 20:34:57,574 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 47.8ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:57,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 605 states. [2021-06-05 20:34:57,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 605 to 576. [2021-06-05 20:34:57,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 576 states, 575 states have (on average 2.554782608695652) internal successors, (1469), 575 states have internal predecessors, (1469), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:57,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 576 states to 576 states and 1469 transitions. [2021-06-05 20:34:57,579 INFO L78 Accepts]: Start accepts. Automaton has 576 states and 1469 transitions. Word has length 26 [2021-06-05 20:34:57,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:34:57,579 INFO L482 AbstractCegarLoop]: Abstraction has 576 states and 1469 transitions. [2021-06-05 20:34:57,580 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:57,580 INFO L276 IsEmpty]: Start isEmpty. Operand 576 states and 1469 transitions. [2021-06-05 20:34:57,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:34:57,580 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:34:57,580 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:34:57,580 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable334 [2021-06-05 20:34:57,580 INFO L430 AbstractCegarLoop]: === Iteration 336 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:34:57,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:34:57,580 INFO L82 PathProgramCache]: Analyzing trace with hash 794797554, now seen corresponding path program 334 times [2021-06-05 20:34:57,580 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:34:57,581 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [4764347] [2021-06-05 20:34:57,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:34:57,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:34:57,645 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:34:57,646 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:34:57,646 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [4764347] [2021-06-05 20:34:57,646 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [4764347] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:34:57,646 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:34:57,646 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 20:34:57,646 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [921810813] [2021-06-05 20:34:57,646 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 20:34:57,646 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:34:57,646 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 20:34:57,646 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:57,646 INFO L87 Difference]: Start difference. First operand 576 states and 1469 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:57,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:34:57,811 INFO L93 Difference]: Finished difference Result 692 states and 1748 transitions. [2021-06-05 20:34:57,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 20:34:57,811 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:34:57,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:34:57,812 INFO L225 Difference]: With dead ends: 692 [2021-06-05 20:34:57,812 INFO L226 Difference]: Without dead ends: 599 [2021-06-05 20:34:57,812 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 57.5ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:57,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 599 states. [2021-06-05 20:34:57,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 599 to 572. [2021-06-05 20:34:57,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 572 states, 571 states have (on average 2.555166374781086) internal successors, (1459), 571 states have internal predecessors, (1459), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:57,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 572 states to 572 states and 1459 transitions. [2021-06-05 20:34:57,817 INFO L78 Accepts]: Start accepts. Automaton has 572 states and 1459 transitions. Word has length 26 [2021-06-05 20:34:57,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:34:57,817 INFO L482 AbstractCegarLoop]: Abstraction has 572 states and 1459 transitions. [2021-06-05 20:34:57,817 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:57,817 INFO L276 IsEmpty]: Start isEmpty. Operand 572 states and 1459 transitions. [2021-06-05 20:34:57,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:34:57,818 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:34:57,818 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:34:57,818 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable335 [2021-06-05 20:34:57,818 INFO L430 AbstractCegarLoop]: === Iteration 337 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:34:57,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:34:57,818 INFO L82 PathProgramCache]: Analyzing trace with hash 1174102638, now seen corresponding path program 335 times [2021-06-05 20:34:57,818 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:34:57,818 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [199598290] [2021-06-05 20:34:57,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:34:57,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:34:57,873 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:34:57,873 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:34:57,873 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [199598290] [2021-06-05 20:34:57,873 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [199598290] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:34:57,873 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:34:57,873 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 20:34:57,873 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [363602389] [2021-06-05 20:34:57,873 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 20:34:57,873 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:34:57,873 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 20:34:57,873 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:57,873 INFO L87 Difference]: Start difference. First operand 572 states and 1459 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:58,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:34:58,031 INFO L93 Difference]: Finished difference Result 712 states and 1795 transitions. [2021-06-05 20:34:58,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 20:34:58,032 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:34:58,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:34:58,032 INFO L225 Difference]: With dead ends: 712 [2021-06-05 20:34:58,032 INFO L226 Difference]: Without dead ends: 631 [2021-06-05 20:34:58,032 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 48.0ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:58,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 631 states. [2021-06-05 20:34:58,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 631 to 574. [2021-06-05 20:34:58,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 574 states, 573 states have (on average 2.5636998254799304) internal successors, (1469), 573 states have internal predecessors, (1469), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:58,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 574 states to 574 states and 1469 transitions. [2021-06-05 20:34:58,040 INFO L78 Accepts]: Start accepts. Automaton has 574 states and 1469 transitions. Word has length 26 [2021-06-05 20:34:58,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:34:58,040 INFO L482 AbstractCegarLoop]: Abstraction has 574 states and 1469 transitions. [2021-06-05 20:34:58,040 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:58,040 INFO L276 IsEmpty]: Start isEmpty. Operand 574 states and 1469 transitions. [2021-06-05 20:34:58,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:34:58,041 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:34:58,041 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:34:58,041 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable336 [2021-06-05 20:34:58,041 INFO L430 AbstractCegarLoop]: === Iteration 338 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:34:58,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:34:58,041 INFO L82 PathProgramCache]: Analyzing trace with hash 2043547246, now seen corresponding path program 336 times [2021-06-05 20:34:58,041 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:34:58,041 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [993251643] [2021-06-05 20:34:58,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:34:58,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:34:58,095 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:34:58,095 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:34:58,095 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [993251643] [2021-06-05 20:34:58,095 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [993251643] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:34:58,095 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:34:58,096 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 20:34:58,096 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1132336573] [2021-06-05 20:34:58,096 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 20:34:58,096 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:34:58,096 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 20:34:58,096 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:58,096 INFO L87 Difference]: Start difference. First operand 574 states and 1469 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:58,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:34:58,257 INFO L93 Difference]: Finished difference Result 690 states and 1756 transitions. [2021-06-05 20:34:58,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 20:34:58,257 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:34:58,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:34:58,258 INFO L225 Difference]: With dead ends: 690 [2021-06-05 20:34:58,258 INFO L226 Difference]: Without dead ends: 599 [2021-06-05 20:34:58,258 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 47.9ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:58,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 599 states. [2021-06-05 20:34:58,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 599 to 577. [2021-06-05 20:34:58,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 577 states, 576 states have (on average 2.560763888888889) internal successors, (1475), 576 states have internal predecessors, (1475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:58,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 577 states to 577 states and 1475 transitions. [2021-06-05 20:34:58,263 INFO L78 Accepts]: Start accepts. Automaton has 577 states and 1475 transitions. Word has length 26 [2021-06-05 20:34:58,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:34:58,263 INFO L482 AbstractCegarLoop]: Abstraction has 577 states and 1475 transitions. [2021-06-05 20:34:58,263 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:58,263 INFO L276 IsEmpty]: Start isEmpty. Operand 577 states and 1475 transitions. [2021-06-05 20:34:58,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:34:58,264 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:34:58,264 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:34:58,264 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable337 [2021-06-05 20:34:58,264 INFO L430 AbstractCegarLoop]: === Iteration 339 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:34:58,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:34:58,264 INFO L82 PathProgramCache]: Analyzing trace with hash -330736180, now seen corresponding path program 337 times [2021-06-05 20:34:58,264 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:34:58,264 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1661170689] [2021-06-05 20:34:58,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:34:58,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:34:58,321 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:34:58,321 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:34:58,321 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1661170689] [2021-06-05 20:34:58,321 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1661170689] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:34:58,321 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:34:58,322 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 20:34:58,322 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [250119838] [2021-06-05 20:34:58,322 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 20:34:58,322 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:34:58,322 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 20:34:58,322 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:58,322 INFO L87 Difference]: Start difference. First operand 577 states and 1475 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:58,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:34:58,475 INFO L93 Difference]: Finished difference Result 686 states and 1730 transitions. [2021-06-05 20:34:58,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 20:34:58,475 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:34:58,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:34:58,476 INFO L225 Difference]: With dead ends: 686 [2021-06-05 20:34:58,476 INFO L226 Difference]: Without dead ends: 597 [2021-06-05 20:34:58,476 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 49.5ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:58,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 597 states. [2021-06-05 20:34:58,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 597 to 575. [2021-06-05 20:34:58,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 575 states, 574 states have (on average 2.5557491289198606) internal successors, (1467), 574 states have internal predecessors, (1467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:58,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 575 states to 575 states and 1467 transitions. [2021-06-05 20:34:58,481 INFO L78 Accepts]: Start accepts. Automaton has 575 states and 1467 transitions. Word has length 26 [2021-06-05 20:34:58,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:34:58,481 INFO L482 AbstractCegarLoop]: Abstraction has 575 states and 1467 transitions. [2021-06-05 20:34:58,481 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:58,481 INFO L276 IsEmpty]: Start isEmpty. Operand 575 states and 1467 transitions. [2021-06-05 20:34:58,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:34:58,482 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:34:58,482 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:34:58,482 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable338 [2021-06-05 20:34:58,482 INFO L430 AbstractCegarLoop]: === Iteration 340 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:34:58,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:34:58,482 INFO L82 PathProgramCache]: Analyzing trace with hash 1789201512, now seen corresponding path program 338 times [2021-06-05 20:34:58,482 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:34:58,482 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1703343431] [2021-06-05 20:34:58,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:34:58,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:34:58,541 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:34:58,542 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:34:58,542 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1703343431] [2021-06-05 20:34:58,542 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1703343431] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:34:58,542 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:34:58,542 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 20:34:58,542 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440714250] [2021-06-05 20:34:58,542 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 20:34:58,542 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:34:58,542 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 20:34:58,542 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:58,542 INFO L87 Difference]: Start difference. First operand 575 states and 1467 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:58,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:34:58,706 INFO L93 Difference]: Finished difference Result 678 states and 1726 transitions. [2021-06-05 20:34:58,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 20:34:58,706 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:34:58,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:34:58,707 INFO L225 Difference]: With dead ends: 678 [2021-06-05 20:34:58,707 INFO L226 Difference]: Without dead ends: 582 [2021-06-05 20:34:58,707 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 48.6ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:58,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 582 states. [2021-06-05 20:34:58,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 582 to 570. [2021-06-05 20:34:58,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 570 states, 569 states have (on average 2.5571177504393674) internal successors, (1455), 569 states have internal predecessors, (1455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:58,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 570 states to 570 states and 1455 transitions. [2021-06-05 20:34:58,712 INFO L78 Accepts]: Start accepts. Automaton has 570 states and 1455 transitions. Word has length 26 [2021-06-05 20:34:58,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:34:58,712 INFO L482 AbstractCegarLoop]: Abstraction has 570 states and 1455 transitions. [2021-06-05 20:34:58,712 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:58,712 INFO L276 IsEmpty]: Start isEmpty. Operand 570 states and 1455 transitions. [2021-06-05 20:34:58,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:34:58,713 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:34:58,713 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:34:58,713 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable339 [2021-06-05 20:34:58,713 INFO L430 AbstractCegarLoop]: === Iteration 341 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:34:58,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:34:58,713 INFO L82 PathProgramCache]: Analyzing trace with hash -268525484, now seen corresponding path program 339 times [2021-06-05 20:34:58,713 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:34:58,713 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1409653235] [2021-06-05 20:34:58,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:34:58,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:34:58,767 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:34:58,768 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:34:58,768 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1409653235] [2021-06-05 20:34:58,768 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1409653235] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:34:58,768 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:34:58,768 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 20:34:58,768 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [953018688] [2021-06-05 20:34:58,768 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 20:34:58,768 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:34:58,768 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 20:34:58,768 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:58,768 INFO L87 Difference]: Start difference. First operand 570 states and 1455 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:58,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:34:58,928 INFO L93 Difference]: Finished difference Result 701 states and 1771 transitions. [2021-06-05 20:34:58,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 20:34:58,928 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:34:58,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:34:58,928 INFO L225 Difference]: With dead ends: 701 [2021-06-05 20:34:58,929 INFO L226 Difference]: Without dead ends: 610 [2021-06-05 20:34:58,929 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 47.9ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:58,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 610 states. [2021-06-05 20:34:58,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 610 to 585. [2021-06-05 20:34:58,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 585 states, 584 states have (on average 2.547945205479452) internal successors, (1488), 584 states have internal predecessors, (1488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:58,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 585 states to 585 states and 1488 transitions. [2021-06-05 20:34:58,934 INFO L78 Accepts]: Start accepts. Automaton has 585 states and 1488 transitions. Word has length 26 [2021-06-05 20:34:58,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:34:58,934 INFO L482 AbstractCegarLoop]: Abstraction has 585 states and 1488 transitions. [2021-06-05 20:34:58,934 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:58,934 INFO L276 IsEmpty]: Start isEmpty. Operand 585 states and 1488 transitions. [2021-06-05 20:34:58,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:34:58,935 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:34:58,935 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:34:58,935 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable340 [2021-06-05 20:34:58,935 INFO L430 AbstractCegarLoop]: === Iteration 342 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:34:58,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:34:58,935 INFO L82 PathProgramCache]: Analyzing trace with hash -1660670030, now seen corresponding path program 340 times [2021-06-05 20:34:58,935 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:34:58,935 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1872779411] [2021-06-05 20:34:58,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:34:58,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:34:58,988 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:34:58,988 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:34:58,988 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1872779411] [2021-06-05 20:34:58,989 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1872779411] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:34:58,989 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:34:58,989 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 20:34:58,989 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [798585425] [2021-06-05 20:34:58,989 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 20:34:58,989 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:34:58,989 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 20:34:58,989 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:58,989 INFO L87 Difference]: Start difference. First operand 585 states and 1488 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:59,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:34:59,148 INFO L93 Difference]: Finished difference Result 693 states and 1757 transitions. [2021-06-05 20:34:59,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 20:34:59,148 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:34:59,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:34:59,149 INFO L225 Difference]: With dead ends: 693 [2021-06-05 20:34:59,149 INFO L226 Difference]: Without dead ends: 596 [2021-06-05 20:34:59,149 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 46.8ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:59,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 596 states. [2021-06-05 20:34:59,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 596 to 583. [2021-06-05 20:34:59,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 583 states, 582 states have (on average 2.5481099656357387) internal successors, (1483), 582 states have internal predecessors, (1483), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:59,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 583 states to 583 states and 1483 transitions. [2021-06-05 20:34:59,154 INFO L78 Accepts]: Start accepts. Automaton has 583 states and 1483 transitions. Word has length 26 [2021-06-05 20:34:59,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:34:59,154 INFO L482 AbstractCegarLoop]: Abstraction has 583 states and 1483 transitions. [2021-06-05 20:34:59,154 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:59,155 INFO L276 IsEmpty]: Start isEmpty. Operand 583 states and 1483 transitions. [2021-06-05 20:34:59,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:34:59,155 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:34:59,155 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:34:59,155 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable341 [2021-06-05 20:34:59,155 INFO L430 AbstractCegarLoop]: === Iteration 343 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:34:59,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:34:59,155 INFO L82 PathProgramCache]: Analyzing trace with hash 1725450056, now seen corresponding path program 341 times [2021-06-05 20:34:59,155 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:34:59,155 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1579957606] [2021-06-05 20:34:59,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:34:59,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:34:59,214 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:34:59,214 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:34:59,214 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1579957606] [2021-06-05 20:34:59,214 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1579957606] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:34:59,214 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:34:59,214 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 20:34:59,214 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1862848564] [2021-06-05 20:34:59,214 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 20:34:59,214 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:34:59,214 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 20:34:59,214 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:59,214 INFO L87 Difference]: Start difference. First operand 583 states and 1483 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:59,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:34:59,364 INFO L93 Difference]: Finished difference Result 728 states and 1837 transitions. [2021-06-05 20:34:59,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 20:34:59,364 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:34:59,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:34:59,365 INFO L225 Difference]: With dead ends: 728 [2021-06-05 20:34:59,365 INFO L226 Difference]: Without dead ends: 613 [2021-06-05 20:34:59,365 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 50.1ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:59,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 613 states. [2021-06-05 20:34:59,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 613 to 583. [2021-06-05 20:34:59,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 583 states, 582 states have (on average 2.5343642611683848) internal successors, (1475), 582 states have internal predecessors, (1475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:59,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 583 states to 583 states and 1475 transitions. [2021-06-05 20:34:59,371 INFO L78 Accepts]: Start accepts. Automaton has 583 states and 1475 transitions. Word has length 26 [2021-06-05 20:34:59,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:34:59,371 INFO L482 AbstractCegarLoop]: Abstraction has 583 states and 1475 transitions. [2021-06-05 20:34:59,371 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:59,371 INFO L276 IsEmpty]: Start isEmpty. Operand 583 states and 1475 transitions. [2021-06-05 20:34:59,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:34:59,371 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:34:59,371 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:34:59,371 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable342 [2021-06-05 20:34:59,371 INFO L430 AbstractCegarLoop]: === Iteration 344 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:34:59,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:34:59,372 INFO L82 PathProgramCache]: Analyzing trace with hash -1329303574, now seen corresponding path program 342 times [2021-06-05 20:34:59,372 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:34:59,372 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1146562439] [2021-06-05 20:34:59,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:34:59,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:34:59,425 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:34:59,425 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:34:59,425 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1146562439] [2021-06-05 20:34:59,425 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1146562439] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:34:59,425 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:34:59,425 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 20:34:59,426 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [199028954] [2021-06-05 20:34:59,426 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 20:34:59,426 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:34:59,426 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 20:34:59,426 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:59,426 INFO L87 Difference]: Start difference. First operand 583 states and 1475 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:59,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:34:59,581 INFO L93 Difference]: Finished difference Result 717 states and 1804 transitions. [2021-06-05 20:34:59,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 20:34:59,581 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:34:59,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:34:59,582 INFO L225 Difference]: With dead ends: 717 [2021-06-05 20:34:59,582 INFO L226 Difference]: Without dead ends: 626 [2021-06-05 20:34:59,582 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 47.0ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:59,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 626 states. [2021-06-05 20:34:59,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 626 to 583. [2021-06-05 20:34:59,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 583 states, 582 states have (on average 2.5343642611683848) internal successors, (1475), 582 states have internal predecessors, (1475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:59,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 583 states to 583 states and 1475 transitions. [2021-06-05 20:34:59,588 INFO L78 Accepts]: Start accepts. Automaton has 583 states and 1475 transitions. Word has length 26 [2021-06-05 20:34:59,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:34:59,588 INFO L482 AbstractCegarLoop]: Abstraction has 583 states and 1475 transitions. [2021-06-05 20:34:59,588 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:59,588 INFO L276 IsEmpty]: Start isEmpty. Operand 583 states and 1475 transitions. [2021-06-05 20:34:59,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:34:59,588 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:34:59,588 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:34:59,588 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable343 [2021-06-05 20:34:59,588 INFO L430 AbstractCegarLoop]: === Iteration 345 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:34:59,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:34:59,589 INFO L82 PathProgramCache]: Analyzing trace with hash 1573519176, now seen corresponding path program 343 times [2021-06-05 20:34:59,589 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:34:59,589 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1265744666] [2021-06-05 20:34:59,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:34:59,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:34:59,647 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:34:59,647 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:34:59,647 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1265744666] [2021-06-05 20:34:59,647 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1265744666] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:34:59,647 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:34:59,647 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 20:34:59,647 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1349407086] [2021-06-05 20:34:59,647 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 20:34:59,647 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:34:59,648 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 20:34:59,648 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:59,648 INFO L87 Difference]: Start difference. First operand 583 states and 1475 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:59,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:34:59,821 INFO L93 Difference]: Finished difference Result 697 states and 1755 transitions. [2021-06-05 20:34:59,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 20:34:59,821 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:34:59,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:34:59,822 INFO L225 Difference]: With dead ends: 697 [2021-06-05 20:34:59,822 INFO L226 Difference]: Without dead ends: 590 [2021-06-05 20:34:59,822 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 43.7ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:59,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 590 states. [2021-06-05 20:34:59,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 590 to 566. [2021-06-05 20:34:59,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 566 states, 565 states have (on average 2.5256637168141594) internal successors, (1427), 565 states have internal predecessors, (1427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:59,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 566 states to 566 states and 1427 transitions. [2021-06-05 20:34:59,827 INFO L78 Accepts]: Start accepts. Automaton has 566 states and 1427 transitions. Word has length 26 [2021-06-05 20:34:59,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:34:59,828 INFO L482 AbstractCegarLoop]: Abstraction has 566 states and 1427 transitions. [2021-06-05 20:34:59,828 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:34:59,828 INFO L276 IsEmpty]: Start isEmpty. Operand 566 states and 1427 transitions. [2021-06-05 20:34:59,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:34:59,828 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:34:59,828 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:34:59,828 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable344 [2021-06-05 20:34:59,828 INFO L430 AbstractCegarLoop]: === Iteration 346 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:34:59,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:34:59,829 INFO L82 PathProgramCache]: Analyzing trace with hash -360912488, now seen corresponding path program 344 times [2021-06-05 20:34:59,829 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:34:59,829 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [743490767] [2021-06-05 20:34:59,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:34:59,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:34:59,885 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:34:59,885 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:34:59,885 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [743490767] [2021-06-05 20:34:59,885 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [743490767] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:34:59,885 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:34:59,885 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 20:34:59,885 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [840323333] [2021-06-05 20:34:59,885 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 20:34:59,885 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:34:59,885 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 20:34:59,885 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:34:59,886 INFO L87 Difference]: Start difference. First operand 566 states and 1427 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:35:00,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:35:00,038 INFO L93 Difference]: Finished difference Result 710 states and 1782 transitions. [2021-06-05 20:35:00,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 20:35:00,038 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:35:00,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:35:00,039 INFO L225 Difference]: With dead ends: 710 [2021-06-05 20:35:00,039 INFO L226 Difference]: Without dead ends: 593 [2021-06-05 20:35:00,039 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 49.7ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:35:00,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 593 states. [2021-06-05 20:35:00,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 593 to 593. [2021-06-05 20:35:00,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 593 states, 592 states have (on average 2.501689189189189) internal successors, (1481), 592 states have internal predecessors, (1481), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:35:00,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 593 states to 593 states and 1481 transitions. [2021-06-05 20:35:00,044 INFO L78 Accepts]: Start accepts. Automaton has 593 states and 1481 transitions. Word has length 26 [2021-06-05 20:35:00,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:35:00,044 INFO L482 AbstractCegarLoop]: Abstraction has 593 states and 1481 transitions. [2021-06-05 20:35:00,044 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:35:00,044 INFO L276 IsEmpty]: Start isEmpty. Operand 593 states and 1481 transitions. [2021-06-05 20:35:00,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:35:00,045 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:35:00,045 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:35:00,045 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable345 [2021-06-05 20:35:00,045 INFO L430 AbstractCegarLoop]: === Iteration 347 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:35:00,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:35:00,045 INFO L82 PathProgramCache]: Analyzing trace with hash 451290100, now seen corresponding path program 345 times [2021-06-05 20:35:00,045 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:35:00,045 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [664259644] [2021-06-05 20:35:00,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:35:00,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:35:00,098 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:35:00,098 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:35:00,099 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [664259644] [2021-06-05 20:35:00,099 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [664259644] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:35:00,099 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:35:00,099 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 20:35:00,099 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1230169721] [2021-06-05 20:35:00,099 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 20:35:00,099 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:35:00,099 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 20:35:00,099 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:35:00,099 INFO L87 Difference]: Start difference. First operand 593 states and 1481 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:35:00,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:35:00,249 INFO L93 Difference]: Finished difference Result 725 states and 1802 transitions. [2021-06-05 20:35:00,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 20:35:00,249 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:35:00,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:35:00,250 INFO L225 Difference]: With dead ends: 725 [2021-06-05 20:35:00,250 INFO L226 Difference]: Without dead ends: 603 [2021-06-05 20:35:00,250 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 47.1ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:35:00,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 603 states. [2021-06-05 20:35:00,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 603 to 593. [2021-06-05 20:35:00,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 593 states, 592 states have (on average 2.4966216216216215) internal successors, (1478), 592 states have internal predecessors, (1478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:35:00,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 593 states to 593 states and 1478 transitions. [2021-06-05 20:35:00,256 INFO L78 Accepts]: Start accepts. Automaton has 593 states and 1478 transitions. Word has length 26 [2021-06-05 20:35:00,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:35:00,256 INFO L482 AbstractCegarLoop]: Abstraction has 593 states and 1478 transitions. [2021-06-05 20:35:00,256 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:35:00,256 INFO L276 IsEmpty]: Start isEmpty. Operand 593 states and 1478 transitions. [2021-06-05 20:35:00,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:35:00,256 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:35:00,256 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:35:00,256 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable346 [2021-06-05 20:35:00,256 INFO L430 AbstractCegarLoop]: === Iteration 348 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:35:00,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:35:00,257 INFO L82 PathProgramCache]: Analyzing trace with hash -578123620, now seen corresponding path program 346 times [2021-06-05 20:35:00,257 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:35:00,257 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [549145338] [2021-06-05 20:35:00,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:35:00,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:35:00,310 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:35:00,310 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:35:00,310 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [549145338] [2021-06-05 20:35:00,310 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [549145338] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:35:00,310 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:35:00,310 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 20:35:00,310 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1906832239] [2021-06-05 20:35:00,310 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 20:35:00,310 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:35:00,310 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 20:35:00,310 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:35:00,310 INFO L87 Difference]: Start difference. First operand 593 states and 1478 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:35:00,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:35:00,457 INFO L93 Difference]: Finished difference Result 740 states and 1834 transitions. [2021-06-05 20:35:00,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 20:35:00,457 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:35:00,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:35:00,458 INFO L225 Difference]: With dead ends: 740 [2021-06-05 20:35:00,458 INFO L226 Difference]: Without dead ends: 591 [2021-06-05 20:35:00,458 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 46.5ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:35:00,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 591 states. [2021-06-05 20:35:00,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 591 to 581. [2021-06-05 20:35:00,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 581 states, 580 states have (on average 2.486206896551724) internal successors, (1442), 580 states have internal predecessors, (1442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:35:00,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 581 states to 581 states and 1442 transitions. [2021-06-05 20:35:00,463 INFO L78 Accepts]: Start accepts. Automaton has 581 states and 1442 transitions. Word has length 26 [2021-06-05 20:35:00,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:35:00,463 INFO L482 AbstractCegarLoop]: Abstraction has 581 states and 1442 transitions. [2021-06-05 20:35:00,463 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:35:00,463 INFO L276 IsEmpty]: Start isEmpty. Operand 581 states and 1442 transitions. [2021-06-05 20:35:00,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:35:00,464 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:35:00,464 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:35:00,464 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable347 [2021-06-05 20:35:00,464 INFO L430 AbstractCegarLoop]: === Iteration 349 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:35:00,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:35:00,464 INFO L82 PathProgramCache]: Analyzing trace with hash 93437880, now seen corresponding path program 347 times [2021-06-05 20:35:00,464 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:35:00,464 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2043501980] [2021-06-05 20:35:00,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:35:00,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:35:00,517 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:35:00,517 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:35:00,517 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2043501980] [2021-06-05 20:35:00,517 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2043501980] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:35:00,517 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:35:00,517 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 20:35:00,517 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [226911631] [2021-06-05 20:35:00,517 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 20:35:00,518 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:35:00,518 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 20:35:00,518 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:35:00,518 INFO L87 Difference]: Start difference. First operand 581 states and 1442 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:35:00,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:35:00,666 INFO L93 Difference]: Finished difference Result 702 states and 1738 transitions. [2021-06-05 20:35:00,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 20:35:00,666 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:35:00,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:35:00,667 INFO L225 Difference]: With dead ends: 702 [2021-06-05 20:35:00,667 INFO L226 Difference]: Without dead ends: 558 [2021-06-05 20:35:00,667 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 46.9ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:35:00,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 558 states. [2021-06-05 20:35:00,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 558 to 542. [2021-06-05 20:35:00,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 542 states, 541 states have (on average 2.4935304990757854) internal successors, (1349), 541 states have internal predecessors, (1349), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:35:00,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 542 states to 542 states and 1349 transitions. [2021-06-05 20:35:00,672 INFO L78 Accepts]: Start accepts. Automaton has 542 states and 1349 transitions. Word has length 26 [2021-06-05 20:35:00,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:35:00,672 INFO L482 AbstractCegarLoop]: Abstraction has 542 states and 1349 transitions. [2021-06-05 20:35:00,672 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:35:00,672 INFO L276 IsEmpty]: Start isEmpty. Operand 542 states and 1349 transitions. [2021-06-05 20:35:00,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:35:00,672 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:35:00,673 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:35:00,673 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable348 [2021-06-05 20:35:00,673 INFO L430 AbstractCegarLoop]: === Iteration 350 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:35:00,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:35:00,673 INFO L82 PathProgramCache]: Analyzing trace with hash 99116926, now seen corresponding path program 348 times [2021-06-05 20:35:00,673 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:35:00,673 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1590574782] [2021-06-05 20:35:00,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:35:00,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:35:00,727 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:35:00,728 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:35:00,728 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1590574782] [2021-06-05 20:35:00,728 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1590574782] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:35:00,728 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:35:00,728 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 20:35:00,728 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909471946] [2021-06-05 20:35:00,728 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 20:35:00,728 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:35:00,728 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 20:35:00,728 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:35:00,728 INFO L87 Difference]: Start difference. First operand 542 states and 1349 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:35:00,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:35:00,888 INFO L93 Difference]: Finished difference Result 644 states and 1595 transitions. [2021-06-05 20:35:00,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 20:35:00,888 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:35:00,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:35:00,888 INFO L225 Difference]: With dead ends: 644 [2021-06-05 20:35:00,889 INFO L226 Difference]: Without dead ends: 561 [2021-06-05 20:35:00,889 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 48.3ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:35:00,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 561 states. [2021-06-05 20:35:00,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 561 to 530. [2021-06-05 20:35:00,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 530 states, 529 states have (on average 2.4688090737240076) internal successors, (1306), 529 states have internal predecessors, (1306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:35:00,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 530 states to 530 states and 1306 transitions. [2021-06-05 20:35:00,893 INFO L78 Accepts]: Start accepts. Automaton has 530 states and 1306 transitions. Word has length 26 [2021-06-05 20:35:00,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:35:00,893 INFO L482 AbstractCegarLoop]: Abstraction has 530 states and 1306 transitions. [2021-06-05 20:35:00,893 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:35:00,894 INFO L276 IsEmpty]: Start isEmpty. Operand 530 states and 1306 transitions. [2021-06-05 20:35:00,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:35:00,894 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:35:00,894 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:35:00,894 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable349 [2021-06-05 20:35:00,894 INFO L430 AbstractCegarLoop]: === Iteration 351 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:35:00,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:35:00,894 INFO L82 PathProgramCache]: Analyzing trace with hash 968561534, now seen corresponding path program 349 times [2021-06-05 20:35:00,894 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:35:00,894 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1348001528] [2021-06-05 20:35:00,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:35:00,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:35:00,948 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:35:00,948 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:35:00,948 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1348001528] [2021-06-05 20:35:00,948 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1348001528] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:35:00,948 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:35:00,948 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 20:35:00,948 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1408684402] [2021-06-05 20:35:00,948 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 20:35:00,948 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:35:00,948 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 20:35:00,949 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:35:00,949 INFO L87 Difference]: Start difference. First operand 530 states and 1306 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:35:01,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:35:01,131 INFO L93 Difference]: Finished difference Result 663 states and 1624 transitions. [2021-06-05 20:35:01,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 20:35:01,132 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:35:01,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:35:01,132 INFO L225 Difference]: With dead ends: 663 [2021-06-05 20:35:01,132 INFO L226 Difference]: Without dead ends: 572 [2021-06-05 20:35:01,132 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 47.3ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:35:01,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 572 states. [2021-06-05 20:35:01,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 572 to 536. [2021-06-05 20:35:01,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 536 states, 535 states have (on average 2.457943925233645) internal successors, (1315), 535 states have internal predecessors, (1315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:35:01,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 536 states to 536 states and 1315 transitions. [2021-06-05 20:35:01,137 INFO L78 Accepts]: Start accepts. Automaton has 536 states and 1315 transitions. Word has length 26 [2021-06-05 20:35:01,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:35:01,137 INFO L482 AbstractCegarLoop]: Abstraction has 536 states and 1315 transitions. [2021-06-05 20:35:01,137 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:35:01,137 INFO L276 IsEmpty]: Start isEmpty. Operand 536 states and 1315 transitions. [2021-06-05 20:35:01,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:35:01,138 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:35:01,138 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:35:01,138 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable350 [2021-06-05 20:35:01,138 INFO L430 AbstractCegarLoop]: === Iteration 352 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:35:01,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:35:01,138 INFO L82 PathProgramCache]: Analyzing trace with hash -1405721892, now seen corresponding path program 350 times [2021-06-05 20:35:01,138 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:35:01,138 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [689779989] [2021-06-05 20:35:01,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:35:01,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:35:01,201 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:35:01,201 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:35:01,201 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [689779989] [2021-06-05 20:35:01,201 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [689779989] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:35:01,201 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:35:01,201 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 20:35:01,201 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1508506294] [2021-06-05 20:35:01,201 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 20:35:01,201 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:35:01,201 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 20:35:01,201 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:35:01,201 INFO L87 Difference]: Start difference. First operand 536 states and 1315 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:35:01,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:35:01,391 INFO L93 Difference]: Finished difference Result 635 states and 1558 transitions. [2021-06-05 20:35:01,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 20:35:01,391 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:35:01,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:35:01,392 INFO L225 Difference]: With dead ends: 635 [2021-06-05 20:35:01,392 INFO L226 Difference]: Without dead ends: 550 [2021-06-05 20:35:01,392 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 54.2ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:35:01,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 550 states. [2021-06-05 20:35:01,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 550 to 539. [2021-06-05 20:35:01,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 539 states, 538 states have (on average 2.453531598513011) internal successors, (1320), 538 states have internal predecessors, (1320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:35:01,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 539 states to 539 states and 1320 transitions. [2021-06-05 20:35:01,397 INFO L78 Accepts]: Start accepts. Automaton has 539 states and 1320 transitions. Word has length 26 [2021-06-05 20:35:01,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:35:01,397 INFO L482 AbstractCegarLoop]: Abstraction has 539 states and 1320 transitions. [2021-06-05 20:35:01,397 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:35:01,397 INFO L276 IsEmpty]: Start isEmpty. Operand 539 states and 1320 transitions. [2021-06-05 20:35:01,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:35:01,397 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:35:01,397 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:35:01,397 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable351 [2021-06-05 20:35:01,398 INFO L430 AbstractCegarLoop]: === Iteration 353 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:35:01,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:35:01,398 INFO L82 PathProgramCache]: Analyzing trace with hash 714215800, now seen corresponding path program 351 times [2021-06-05 20:35:01,398 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:35:01,398 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [737248845] [2021-06-05 20:35:01,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:35:01,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:35:01,455 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:35:01,455 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:35:01,456 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [737248845] [2021-06-05 20:35:01,456 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [737248845] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:35:01,456 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:35:01,456 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 20:35:01,456 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1220463] [2021-06-05 20:35:01,456 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 20:35:01,456 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:35:01,456 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 20:35:01,456 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:35:01,456 INFO L87 Difference]: Start difference. First operand 539 states and 1320 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:35:01,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:35:01,632 INFO L93 Difference]: Finished difference Result 642 states and 1579 transitions. [2021-06-05 20:35:01,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 20:35:01,633 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:35:01,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:35:01,633 INFO L225 Difference]: With dead ends: 642 [2021-06-05 20:35:01,633 INFO L226 Difference]: Without dead ends: 546 [2021-06-05 20:35:01,633 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 50.8ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:35:01,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 546 states. [2021-06-05 20:35:01,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 546 to 536. [2021-06-05 20:35:01,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 536 states, 535 states have (on average 2.4560747663551403) internal successors, (1314), 535 states have internal predecessors, (1314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:35:01,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 536 states to 536 states and 1314 transitions. [2021-06-05 20:35:01,638 INFO L78 Accepts]: Start accepts. Automaton has 536 states and 1314 transitions. Word has length 26 [2021-06-05 20:35:01,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:35:01,638 INFO L482 AbstractCegarLoop]: Abstraction has 536 states and 1314 transitions. [2021-06-05 20:35:01,638 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:35:01,638 INFO L276 IsEmpty]: Start isEmpty. Operand 536 states and 1314 transitions. [2021-06-05 20:35:01,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:35:01,639 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:35:01,639 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:35:01,639 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable352 [2021-06-05 20:35:01,639 INFO L430 AbstractCegarLoop]: === Iteration 354 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:35:01,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:35:01,639 INFO L82 PathProgramCache]: Analyzing trace with hash -173068130, now seen corresponding path program 352 times [2021-06-05 20:35:01,639 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:35:01,639 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [145566679] [2021-06-05 20:35:01,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:35:01,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:35:01,699 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:35:01,699 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:35:01,699 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [145566679] [2021-06-05 20:35:01,699 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [145566679] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:35:01,699 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:35:01,699 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 20:35:01,699 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [521951026] [2021-06-05 20:35:01,699 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 20:35:01,700 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:35:01,700 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 20:35:01,700 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:35:01,700 INFO L87 Difference]: Start difference. First operand 536 states and 1314 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:35:01,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:35:01,854 INFO L93 Difference]: Finished difference Result 646 states and 1576 transitions. [2021-06-05 20:35:01,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 20:35:01,854 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:35:01,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:35:01,855 INFO L225 Difference]: With dead ends: 646 [2021-06-05 20:35:01,855 INFO L226 Difference]: Without dead ends: 559 [2021-06-05 20:35:01,855 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 53.4ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:35:01,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 559 states. [2021-06-05 20:35:01,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 559 to 530. [2021-06-05 20:35:01,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 530 states, 529 states have (on average 2.448015122873346) internal successors, (1295), 529 states have internal predecessors, (1295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:35:01,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 530 states to 530 states and 1295 transitions. [2021-06-05 20:35:01,860 INFO L78 Accepts]: Start accepts. Automaton has 530 states and 1295 transitions. Word has length 26 [2021-06-05 20:35:01,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:35:01,860 INFO L482 AbstractCegarLoop]: Abstraction has 530 states and 1295 transitions. [2021-06-05 20:35:01,860 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:35:01,860 INFO L276 IsEmpty]: Start isEmpty. Operand 530 states and 1295 transitions. [2021-06-05 20:35:01,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:35:01,861 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:35:01,861 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:35:01,861 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable353 [2021-06-05 20:35:01,861 INFO L430 AbstractCegarLoop]: === Iteration 355 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:35:01,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:35:01,861 INFO L82 PathProgramCache]: Analyzing trace with hash -1343511196, now seen corresponding path program 353 times [2021-06-05 20:35:01,861 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:35:01,861 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1969081516] [2021-06-05 20:35:01,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:35:01,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:35:01,919 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:35:01,919 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:35:01,919 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1969081516] [2021-06-05 20:35:01,919 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1969081516] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:35:01,920 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:35:01,920 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 20:35:01,920 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1472702667] [2021-06-05 20:35:01,920 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 20:35:01,920 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:35:01,920 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 20:35:01,920 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:35:01,920 INFO L87 Difference]: Start difference. First operand 530 states and 1295 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:35:02,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:35:02,080 INFO L93 Difference]: Finished difference Result 658 states and 1602 transitions. [2021-06-05 20:35:02,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 20:35:02,081 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:35:02,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:35:02,081 INFO L225 Difference]: With dead ends: 658 [2021-06-05 20:35:02,081 INFO L226 Difference]: Without dead ends: 567 [2021-06-05 20:35:02,081 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 47.8ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:35:02,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 567 states. [2021-06-05 20:35:02,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 567 to 530. [2021-06-05 20:35:02,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 530 states, 529 states have (on average 2.448015122873346) internal successors, (1295), 529 states have internal predecessors, (1295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:35:02,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 530 states to 530 states and 1295 transitions. [2021-06-05 20:35:02,086 INFO L78 Accepts]: Start accepts. Automaton has 530 states and 1295 transitions. Word has length 26 [2021-06-05 20:35:02,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:35:02,086 INFO L482 AbstractCegarLoop]: Abstraction has 530 states and 1295 transitions. [2021-06-05 20:35:02,086 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:35:02,086 INFO L276 IsEmpty]: Start isEmpty. Operand 530 states and 1295 transitions. [2021-06-05 20:35:02,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:35:02,087 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:35:02,087 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:35:02,087 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable354 [2021-06-05 20:35:02,087 INFO L430 AbstractCegarLoop]: === Iteration 356 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:35:02,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:35:02,087 INFO L82 PathProgramCache]: Analyzing trace with hash 1559311554, now seen corresponding path program 354 times [2021-06-05 20:35:02,087 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:35:02,087 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [684551916] [2021-06-05 20:35:02,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:35:02,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:35:02,151 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:35:02,152 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:35:02,152 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [684551916] [2021-06-05 20:35:02,152 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [684551916] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:35:02,152 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:35:02,152 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 20:35:02,152 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [930038308] [2021-06-05 20:35:02,152 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 20:35:02,152 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:35:02,152 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 20:35:02,152 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:35:02,152 INFO L87 Difference]: Start difference. First operand 530 states and 1295 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:35:02,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:35:02,308 INFO L93 Difference]: Finished difference Result 638 states and 1564 transitions. [2021-06-05 20:35:02,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 20:35:02,309 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:35:02,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:35:02,309 INFO L225 Difference]: With dead ends: 638 [2021-06-05 20:35:02,309 INFO L226 Difference]: Without dead ends: 541 [2021-06-05 20:35:02,309 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 58.0ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:35:02,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 541 states. [2021-06-05 20:35:02,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 541 to 528. [2021-06-05 20:35:02,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 528 states, 527 states have (on average 2.447817836812144) internal successors, (1290), 527 states have internal predecessors, (1290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:35:02,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 528 states to 528 states and 1290 transitions. [2021-06-05 20:35:02,314 INFO L78 Accepts]: Start accepts. Automaton has 528 states and 1290 transitions. Word has length 26 [2021-06-05 20:35:02,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:35:02,314 INFO L482 AbstractCegarLoop]: Abstraction has 528 states and 1290 transitions. [2021-06-05 20:35:02,314 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:35:02,314 INFO L276 IsEmpty]: Start isEmpty. Operand 528 states and 1290 transitions. [2021-06-05 20:35:02,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:35:02,315 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:35:02,315 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:35:02,315 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable355 [2021-06-05 20:35:02,315 INFO L430 AbstractCegarLoop]: === Iteration 357 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:35:02,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:35:02,315 INFO L82 PathProgramCache]: Analyzing trace with hash 1828467314, now seen corresponding path program 355 times [2021-06-05 20:35:02,315 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:35:02,315 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [46393967] [2021-06-05 20:35:02,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:35:02,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:35:02,369 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:35:02,369 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:35:02,369 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [46393967] [2021-06-05 20:35:02,369 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [46393967] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:35:02,369 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:35:02,369 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 20:35:02,369 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [390771852] [2021-06-05 20:35:02,370 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 20:35:02,370 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:35:02,370 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 20:35:02,370 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:35:02,370 INFO L87 Difference]: Start difference. First operand 528 states and 1290 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:35:02,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:35:02,518 INFO L93 Difference]: Finished difference Result 621 states and 1513 transitions. [2021-06-05 20:35:02,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 20:35:02,518 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:35:02,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:35:02,519 INFO L225 Difference]: With dead ends: 621 [2021-06-05 20:35:02,519 INFO L226 Difference]: Without dead ends: 536 [2021-06-05 20:35:02,519 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 47.7ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:35:02,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 536 states. [2021-06-05 20:35:02,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 536 to 516. [2021-06-05 20:35:02,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 516 states, 515 states have (on average 2.4466019417475726) internal successors, (1260), 515 states have internal predecessors, (1260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:35:02,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 516 states to 516 states and 1260 transitions. [2021-06-05 20:35:02,524 INFO L78 Accepts]: Start accepts. Automaton has 516 states and 1260 transitions. Word has length 26 [2021-06-05 20:35:02,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:35:02,524 INFO L482 AbstractCegarLoop]: Abstraction has 516 states and 1260 transitions. [2021-06-05 20:35:02,524 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:35:02,524 INFO L276 IsEmpty]: Start isEmpty. Operand 516 states and 1260 transitions. [2021-06-05 20:35:02,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:35:02,524 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:35:02,524 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:35:02,524 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable356 [2021-06-05 20:35:02,524 INFO L430 AbstractCegarLoop]: === Iteration 358 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:35:02,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:35:02,525 INFO L82 PathProgramCache]: Analyzing trace with hash -346562290, now seen corresponding path program 356 times [2021-06-05 20:35:02,525 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:35:02,525 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [706085995] [2021-06-05 20:35:02,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:35:02,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:35:02,578 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:35:02,579 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:35:02,579 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [706085995] [2021-06-05 20:35:02,579 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [706085995] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:35:02,579 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:35:02,579 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 20:35:02,579 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [289509456] [2021-06-05 20:35:02,579 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 20:35:02,579 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:35:02,579 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 20:35:02,579 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:35:02,579 INFO L87 Difference]: Start difference. First operand 516 states and 1260 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:35:02,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:35:02,731 INFO L93 Difference]: Finished difference Result 643 states and 1566 transitions. [2021-06-05 20:35:02,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 20:35:02,731 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:35:02,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:35:02,732 INFO L225 Difference]: With dead ends: 643 [2021-06-05 20:35:02,732 INFO L226 Difference]: Without dead ends: 541 [2021-06-05 20:35:02,732 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 47.4ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:35:02,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 541 states. [2021-06-05 20:35:02,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 541 to 501. [2021-06-05 20:35:02,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 501 states, 500 states have (on average 2.462) internal successors, (1231), 500 states have internal predecessors, (1231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:35:02,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 501 states to 501 states and 1231 transitions. [2021-06-05 20:35:02,736 INFO L78 Accepts]: Start accepts. Automaton has 501 states and 1231 transitions. Word has length 26 [2021-06-05 20:35:02,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:35:02,737 INFO L482 AbstractCegarLoop]: Abstraction has 501 states and 1231 transitions. [2021-06-05 20:35:02,737 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:35:02,737 INFO L276 IsEmpty]: Start isEmpty. Operand 501 states and 1231 transitions. [2021-06-05 20:35:02,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:35:02,737 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:35:02,737 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:35:02,737 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable357 [2021-06-05 20:35:02,737 INFO L430 AbstractCegarLoop]: === Iteration 359 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:35:02,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:35:02,737 INFO L82 PathProgramCache]: Analyzing trace with hash -1198711480, now seen corresponding path program 357 times [2021-06-05 20:35:02,737 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:35:02,737 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [269016846] [2021-06-05 20:35:02,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:35:02,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:35:02,796 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:35:02,796 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:35:02,796 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [269016846] [2021-06-05 20:35:02,796 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [269016846] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:35:02,796 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:35:02,796 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 20:35:02,796 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [38308698] [2021-06-05 20:35:02,796 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 20:35:02,796 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:35:02,796 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 20:35:02,796 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:35:02,797 INFO L87 Difference]: Start difference. First operand 501 states and 1231 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:35:02,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:35:02,951 INFO L93 Difference]: Finished difference Result 600 states and 1466 transitions. [2021-06-05 20:35:02,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 20:35:02,951 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:35:02,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:35:02,951 INFO L225 Difference]: With dead ends: 600 [2021-06-05 20:35:02,951 INFO L226 Difference]: Without dead ends: 459 [2021-06-05 20:35:02,952 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 50.2ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:35:02,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 459 states. [2021-06-05 20:35:02,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 459 to 419. [2021-06-05 20:35:02,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 419 states, 418 states have (on average 2.4665071770334928) internal successors, (1031), 418 states have internal predecessors, (1031), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:35:02,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 419 states to 419 states and 1031 transitions. [2021-06-05 20:35:02,956 INFO L78 Accepts]: Start accepts. Automaton has 419 states and 1031 transitions. Word has length 26 [2021-06-05 20:35:02,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:35:02,956 INFO L482 AbstractCegarLoop]: Abstraction has 419 states and 1031 transitions. [2021-06-05 20:35:02,956 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:35:02,956 INFO L276 IsEmpty]: Start isEmpty. Operand 419 states and 1031 transitions. [2021-06-05 20:35:02,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:35:02,956 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:35:02,956 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:35:02,956 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable358 [2021-06-05 20:35:02,956 INFO L430 AbstractCegarLoop]: === Iteration 360 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:35:02,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:35:02,956 INFO L82 PathProgramCache]: Analyzing trace with hash 323941484, now seen corresponding path program 358 times [2021-06-05 20:35:02,956 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:35:02,957 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1901089609] [2021-06-05 20:35:02,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:35:02,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:35:03,012 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:35:03,012 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:35:03,012 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1901089609] [2021-06-05 20:35:03,012 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1901089609] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:35:03,012 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:35:03,012 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 20:35:03,012 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841662652] [2021-06-05 20:35:03,013 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 20:35:03,013 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:35:03,013 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 20:35:03,013 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:35:03,013 INFO L87 Difference]: Start difference. First operand 419 states and 1031 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:35:03,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:35:03,159 INFO L93 Difference]: Finished difference Result 544 states and 1325 transitions. [2021-06-05 20:35:03,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 20:35:03,159 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:35:03,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:35:03,159 INFO L225 Difference]: With dead ends: 544 [2021-06-05 20:35:03,159 INFO L226 Difference]: Without dead ends: 423 [2021-06-05 20:35:03,160 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 49.4ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:35:03,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 423 states. [2021-06-05 20:35:03,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 423 to 419. [2021-06-05 20:35:03,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 419 states, 418 states have (on average 2.4425837320574164) internal successors, (1021), 418 states have internal predecessors, (1021), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:35:03,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 419 states to 419 states and 1021 transitions. [2021-06-05 20:35:03,163 INFO L78 Accepts]: Start accepts. Automaton has 419 states and 1021 transitions. Word has length 26 [2021-06-05 20:35:03,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:35:03,163 INFO L482 AbstractCegarLoop]: Abstraction has 419 states and 1021 transitions. [2021-06-05 20:35:03,164 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:35:03,164 INFO L276 IsEmpty]: Start isEmpty. Operand 419 states and 1021 transitions. [2021-06-05 20:35:03,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:35:03,164 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:35:03,164 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:35:03,164 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable359 [2021-06-05 20:35:03,164 INFO L430 AbstractCegarLoop]: === Iteration 361 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:35:03,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:35:03,164 INFO L82 PathProgramCache]: Analyzing trace with hash 2082614990, now seen corresponding path program 359 times [2021-06-05 20:35:03,164 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:35:03,164 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [357928146] [2021-06-05 20:35:03,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:35:03,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:35:03,221 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:35:03,222 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:35:03,222 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [357928146] [2021-06-05 20:35:03,222 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [357928146] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:35:03,222 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:35:03,222 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 20:35:03,222 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1567524538] [2021-06-05 20:35:03,222 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 20:35:03,222 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:35:03,222 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 20:35:03,222 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:35:03,222 INFO L87 Difference]: Start difference. First operand 419 states and 1021 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:35:03,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:35:03,366 INFO L93 Difference]: Finished difference Result 545 states and 1321 transitions. [2021-06-05 20:35:03,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 20:35:03,366 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:35:03,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:35:03,366 INFO L225 Difference]: With dead ends: 545 [2021-06-05 20:35:03,366 INFO L226 Difference]: Without dead ends: 429 [2021-06-05 20:35:03,366 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 47.9ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:35:03,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 429 states. [2021-06-05 20:35:03,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 429 to 423. [2021-06-05 20:35:03,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 423 states, 422 states have (on average 2.4360189573459716) internal successors, (1028), 422 states have internal predecessors, (1028), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:35:03,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 423 states to 423 states and 1028 transitions. [2021-06-05 20:35:03,370 INFO L78 Accepts]: Start accepts. Automaton has 423 states and 1028 transitions. Word has length 26 [2021-06-05 20:35:03,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:35:03,371 INFO L482 AbstractCegarLoop]: Abstraction has 423 states and 1028 transitions. [2021-06-05 20:35:03,371 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:35:03,371 INFO L276 IsEmpty]: Start isEmpty. Operand 423 states and 1028 transitions. [2021-06-05 20:35:03,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:35:03,371 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:35:03,371 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:35:03,371 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable360 [2021-06-05 20:35:03,371 INFO L430 AbstractCegarLoop]: === Iteration 362 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:35:03,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:35:03,371 INFO L82 PathProgramCache]: Analyzing trace with hash 1483348368, now seen corresponding path program 360 times [2021-06-05 20:35:03,371 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:35:03,371 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1904735181] [2021-06-05 20:35:03,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:35:03,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:35:03,426 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:35:03,426 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:35:03,426 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1904735181] [2021-06-05 20:35:03,426 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1904735181] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:35:03,426 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:35:03,426 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 20:35:03,426 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1597003358] [2021-06-05 20:35:03,426 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 20:35:03,426 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:35:03,427 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 20:35:03,427 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:35:03,427 INFO L87 Difference]: Start difference. First operand 423 states and 1028 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:35:03,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:35:03,575 INFO L93 Difference]: Finished difference Result 536 states and 1302 transitions. [2021-06-05 20:35:03,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 20:35:03,575 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:35:03,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:35:03,576 INFO L225 Difference]: With dead ends: 536 [2021-06-05 20:35:03,576 INFO L226 Difference]: Without dead ends: 417 [2021-06-05 20:35:03,576 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 48.0ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:35:03,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 417 states. [2021-06-05 20:35:03,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 417 to 409. [2021-06-05 20:35:03,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 409 states, 408 states have (on average 2.4534313725490198) internal successors, (1001), 408 states have internal predecessors, (1001), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:35:03,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 409 states to 409 states and 1001 transitions. [2021-06-05 20:35:03,579 INFO L78 Accepts]: Start accepts. Automaton has 409 states and 1001 transitions. Word has length 26 [2021-06-05 20:35:03,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:35:03,579 INFO L482 AbstractCegarLoop]: Abstraction has 409 states and 1001 transitions. [2021-06-05 20:35:03,579 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:35:03,580 INFO L276 IsEmpty]: Start isEmpty. Operand 409 states and 1001 transitions. [2021-06-05 20:35:03,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:35:03,580 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:35:03,580 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:35:03,580 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable361 [2021-06-05 20:35:03,580 INFO L430 AbstractCegarLoop]: === Iteration 363 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:35:03,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:35:03,580 INFO L82 PathProgramCache]: Analyzing trace with hash -1622263662, now seen corresponding path program 361 times [2021-06-05 20:35:03,580 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:35:03,580 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [962025088] [2021-06-05 20:35:03,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:35:03,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:35:03,637 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:35:03,638 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:35:03,638 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [962025088] [2021-06-05 20:35:03,638 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [962025088] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:35:03,638 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:35:03,638 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:35:03,638 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [212929801] [2021-06-05 20:35:03,638 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-05 20:35:03,638 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:35:03,638 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-05 20:35:03,638 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:35:03,638 INFO L87 Difference]: Start difference. First operand 409 states and 1001 transitions. Second operand has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:35:03,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:35:03,750 INFO L93 Difference]: Finished difference Result 541 states and 1317 transitions. [2021-06-05 20:35:03,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-05 20:35:03,751 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:35:03,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:35:03,751 INFO L225 Difference]: With dead ends: 541 [2021-06-05 20:35:03,751 INFO L226 Difference]: Without dead ends: 430 [2021-06-05 20:35:03,751 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 41.9ms TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:35:03,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 430 states. [2021-06-05 20:35:03,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 430 to 426. [2021-06-05 20:35:03,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 426 states, 425 states have (on average 2.428235294117647) internal successors, (1032), 425 states have internal predecessors, (1032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:35:03,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 426 states to 426 states and 1032 transitions. [2021-06-05 20:35:03,755 INFO L78 Accepts]: Start accepts. Automaton has 426 states and 1032 transitions. Word has length 26 [2021-06-05 20:35:03,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:35:03,755 INFO L482 AbstractCegarLoop]: Abstraction has 426 states and 1032 transitions. [2021-06-05 20:35:03,755 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:35:03,755 INFO L276 IsEmpty]: Start isEmpty. Operand 426 states and 1032 transitions. [2021-06-05 20:35:03,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:35:03,756 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:35:03,756 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:35:03,756 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable362 [2021-06-05 20:35:03,756 INFO L430 AbstractCegarLoop]: === Iteration 364 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:35:03,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:35:03,756 INFO L82 PathProgramCache]: Analyzing trace with hash 1764452498, now seen corresponding path program 362 times [2021-06-05 20:35:03,756 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:35:03,756 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [447037724] [2021-06-05 20:35:03,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:35:03,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:35:03,815 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:35:03,816 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:35:03,816 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [447037724] [2021-06-05 20:35:03,816 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [447037724] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:35:03,816 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:35:03,816 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:35:03,816 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1929794743] [2021-06-05 20:35:03,816 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-05 20:35:03,816 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:35:03,816 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-05 20:35:03,816 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:35:03,816 INFO L87 Difference]: Start difference. First operand 426 states and 1032 transitions. Second operand has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:35:03,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:35:03,930 INFO L93 Difference]: Finished difference Result 544 states and 1316 transitions. [2021-06-05 20:35:03,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-05 20:35:03,930 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:35:03,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:35:03,930 INFO L225 Difference]: With dead ends: 544 [2021-06-05 20:35:03,930 INFO L226 Difference]: Without dead ends: 444 [2021-06-05 20:35:03,930 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 43.5ms TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:35:03,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 444 states. [2021-06-05 20:35:03,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 444 to 431. [2021-06-05 20:35:03,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 431 states, 430 states have (on average 2.425581395348837) internal successors, (1043), 430 states have internal predecessors, (1043), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:35:03,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 431 states to 431 states and 1043 transitions. [2021-06-05 20:35:03,934 INFO L78 Accepts]: Start accepts. Automaton has 431 states and 1043 transitions. Word has length 26 [2021-06-05 20:35:03,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:35:03,934 INFO L482 AbstractCegarLoop]: Abstraction has 431 states and 1043 transitions. [2021-06-05 20:35:03,934 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:35:03,935 INFO L276 IsEmpty]: Start isEmpty. Operand 431 states and 1043 transitions. [2021-06-05 20:35:03,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:35:03,935 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:35:03,935 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:35:03,935 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable363 [2021-06-05 20:35:03,935 INFO L430 AbstractCegarLoop]: === Iteration 365 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:35:03,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:35:03,935 INFO L82 PathProgramCache]: Analyzing trace with hash -1609938832, now seen corresponding path program 363 times [2021-06-05 20:35:03,935 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:35:03,935 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1936392969] [2021-06-05 20:35:03,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:35:03,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:35:03,980 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:35:03,980 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:35:03,981 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1936392969] [2021-06-05 20:35:03,981 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1936392969] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:35:03,981 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:35:03,981 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:35:03,981 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [912808587] [2021-06-05 20:35:03,981 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-05 20:35:03,981 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:35:03,981 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-05 20:35:03,981 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:35:03,981 INFO L87 Difference]: Start difference. First operand 431 states and 1043 transitions. Second operand has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:35:04,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:35:04,099 INFO L93 Difference]: Finished difference Result 539 states and 1307 transitions. [2021-06-05 20:35:04,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-05 20:35:04,099 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:35:04,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:35:04,100 INFO L225 Difference]: With dead ends: 539 [2021-06-05 20:35:04,100 INFO L226 Difference]: Without dead ends: 431 [2021-06-05 20:35:04,100 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 38.9ms TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:35:04,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 431 states. [2021-06-05 20:35:04,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 431 to 414. [2021-06-05 20:35:04,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 414 states, 413 states have (on average 2.4455205811138017) internal successors, (1010), 413 states have internal predecessors, (1010), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:35:04,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 414 states to 414 states and 1010 transitions. [2021-06-05 20:35:04,104 INFO L78 Accepts]: Start accepts. Automaton has 414 states and 1010 transitions. Word has length 26 [2021-06-05 20:35:04,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:35:04,104 INFO L482 AbstractCegarLoop]: Abstraction has 414 states and 1010 transitions. [2021-06-05 20:35:04,104 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:35:04,104 INFO L276 IsEmpty]: Start isEmpty. Operand 414 states and 1010 transitions. [2021-06-05 20:35:04,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:35:04,104 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:35:04,104 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:35:04,104 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable364 [2021-06-05 20:35:04,104 INFO L430 AbstractCegarLoop]: === Iteration 366 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:35:04,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:35:04,104 INFO L82 PathProgramCache]: Analyzing trace with hash 2058833742, now seen corresponding path program 364 times [2021-06-05 20:35:04,105 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:35:04,105 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2133967019] [2021-06-05 20:35:04,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:35:04,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:35:04,157 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:35:04,157 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:35:04,157 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2133967019] [2021-06-05 20:35:04,157 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2133967019] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:35:04,158 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:35:04,158 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 20:35:04,158 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1606553504] [2021-06-05 20:35:04,158 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 20:35:04,158 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:35:04,158 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 20:35:04,158 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:35:04,158 INFO L87 Difference]: Start difference. First operand 414 states and 1010 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:35:04,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:35:04,304 INFO L93 Difference]: Finished difference Result 552 states and 1354 transitions. [2021-06-05 20:35:04,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 20:35:04,304 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:35:04,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:35:04,305 INFO L225 Difference]: With dead ends: 552 [2021-06-05 20:35:04,305 INFO L226 Difference]: Without dead ends: 447 [2021-06-05 20:35:04,305 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 46.6ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:35:04,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 447 states. [2021-06-05 20:35:04,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 447 to 426. [2021-06-05 20:35:04,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 426 states, 425 states have (on average 2.468235294117647) internal successors, (1049), 425 states have internal predecessors, (1049), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:35:04,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 426 states to 426 states and 1049 transitions. [2021-06-05 20:35:04,309 INFO L78 Accepts]: Start accepts. Automaton has 426 states and 1049 transitions. Word has length 26 [2021-06-05 20:35:04,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:35:04,309 INFO L482 AbstractCegarLoop]: Abstraction has 426 states and 1049 transitions. [2021-06-05 20:35:04,309 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:35:04,309 INFO L276 IsEmpty]: Start isEmpty. Operand 426 states and 1049 transitions. [2021-06-05 20:35:04,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:35:04,309 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:35:04,309 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:35:04,309 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable365 [2021-06-05 20:35:04,310 INFO L430 AbstractCegarLoop]: === Iteration 367 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:35:04,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:35:04,310 INFO L82 PathProgramCache]: Analyzing trace with hash -331419052, now seen corresponding path program 365 times [2021-06-05 20:35:04,310 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:35:04,310 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [657755686] [2021-06-05 20:35:04,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:35:04,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:35:04,363 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:35:04,363 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:35:04,363 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [657755686] [2021-06-05 20:35:04,363 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [657755686] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:35:04,363 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:35:04,364 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 20:35:04,364 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [291754395] [2021-06-05 20:35:04,364 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 20:35:04,364 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:35:04,364 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 20:35:04,364 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:35:04,364 INFO L87 Difference]: Start difference. First operand 426 states and 1049 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:35:04,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:35:04,507 INFO L93 Difference]: Finished difference Result 587 states and 1441 transitions. [2021-06-05 20:35:04,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 20:35:04,508 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:35:04,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:35:04,508 INFO L225 Difference]: With dead ends: 587 [2021-06-05 20:35:04,508 INFO L226 Difference]: Without dead ends: 454 [2021-06-05 20:35:04,508 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 47.2ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:35:04,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 454 states. [2021-06-05 20:35:04,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 454 to 438. [2021-06-05 20:35:04,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 438 states, 437 states have (on average 2.462242562929062) internal successors, (1076), 437 states have internal predecessors, (1076), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:35:04,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 438 states to 438 states and 1076 transitions. [2021-06-05 20:35:04,512 INFO L78 Accepts]: Start accepts. Automaton has 438 states and 1076 transitions. Word has length 26 [2021-06-05 20:35:04,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:35:04,512 INFO L482 AbstractCegarLoop]: Abstraction has 438 states and 1076 transitions. [2021-06-05 20:35:04,512 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:35:04,512 INFO L276 IsEmpty]: Start isEmpty. Operand 438 states and 1076 transitions. [2021-06-05 20:35:04,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:35:04,513 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:35:04,513 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:35:04,513 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable366 [2021-06-05 20:35:04,513 INFO L430 AbstractCegarLoop]: === Iteration 368 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:35:04,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:35:04,513 INFO L82 PathProgramCache]: Analyzing trace with hash -2118876052, now seen corresponding path program 366 times [2021-06-05 20:35:04,513 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:35:04,513 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [922800286] [2021-06-05 20:35:04,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:35:04,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:35:04,567 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:35:04,567 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:35:04,567 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [922800286] [2021-06-05 20:35:04,567 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [922800286] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:35:04,567 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:35:04,567 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 20:35:04,568 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1946035760] [2021-06-05 20:35:04,568 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 20:35:04,568 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:35:04,568 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 20:35:04,568 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:35:04,568 INFO L87 Difference]: Start difference. First operand 438 states and 1076 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:35:04,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:35:04,719 INFO L93 Difference]: Finished difference Result 557 states and 1384 transitions. [2021-06-05 20:35:04,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 20:35:04,719 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:35:04,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:35:04,720 INFO L225 Difference]: With dead ends: 557 [2021-06-05 20:35:04,720 INFO L226 Difference]: Without dead ends: 460 [2021-06-05 20:35:04,720 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 47.7ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:35:04,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 460 states. [2021-06-05 20:35:04,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 460 to 443. [2021-06-05 20:35:04,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 443 states, 442 states have (on average 2.4683257918552037) internal successors, (1091), 442 states have internal predecessors, (1091), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:35:04,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 443 states to 443 states and 1091 transitions. [2021-06-05 20:35:04,724 INFO L78 Accepts]: Start accepts. Automaton has 443 states and 1091 transitions. Word has length 26 [2021-06-05 20:35:04,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:35:04,724 INFO L482 AbstractCegarLoop]: Abstraction has 443 states and 1091 transitions. [2021-06-05 20:35:04,724 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:35:04,724 INFO L276 IsEmpty]: Start isEmpty. Operand 443 states and 1091 transitions. [2021-06-05 20:35:04,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:35:04,725 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:35:04,725 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:35:04,725 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable367 [2021-06-05 20:35:04,725 INFO L430 AbstractCegarLoop]: === Iteration 369 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:35:04,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:35:04,725 INFO L82 PathProgramCache]: Analyzing trace with hash 607162702, now seen corresponding path program 367 times [2021-06-05 20:35:04,725 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:35:04,725 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [334166213] [2021-06-05 20:35:04,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:35:04,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:35:04,778 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:35:04,779 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:35:04,779 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [334166213] [2021-06-05 20:35:04,779 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [334166213] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:35:04,779 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:35:04,779 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 20:35:04,779 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [947245390] [2021-06-05 20:35:04,779 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 20:35:04,779 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:35:04,779 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 20:35:04,779 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:35:04,779 INFO L87 Difference]: Start difference. First operand 443 states and 1091 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:35:04,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:35:04,922 INFO L93 Difference]: Finished difference Result 553 states and 1364 transitions. [2021-06-05 20:35:04,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 20:35:04,922 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:35:04,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:35:04,922 INFO L225 Difference]: With dead ends: 553 [2021-06-05 20:35:04,922 INFO L226 Difference]: Without dead ends: 448 [2021-06-05 20:35:04,922 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 47.3ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:35:04,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 448 states. [2021-06-05 20:35:04,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 448 to 426. [2021-06-05 20:35:04,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 426 states, 425 states have (on average 2.4447058823529413) internal successors, (1039), 425 states have internal predecessors, (1039), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:35:04,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 426 states to 426 states and 1039 transitions. [2021-06-05 20:35:04,926 INFO L78 Accepts]: Start accepts. Automaton has 426 states and 1039 transitions. Word has length 26 [2021-06-05 20:35:04,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:35:04,927 INFO L482 AbstractCegarLoop]: Abstraction has 426 states and 1039 transitions. [2021-06-05 20:35:04,927 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:35:04,927 INFO L276 IsEmpty]: Start isEmpty. Operand 426 states and 1039 transitions. [2021-06-05 20:35:04,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:35:04,927 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:35:04,927 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:35:04,927 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable368 [2021-06-05 20:35:04,927 INFO L430 AbstractCegarLoop]: === Iteration 370 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:35:04,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:35:04,927 INFO L82 PathProgramCache]: Analyzing trace with hash 860847822, now seen corresponding path program 368 times [2021-06-05 20:35:04,927 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:35:04,927 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [351785075] [2021-06-05 20:35:04,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:35:04,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:35:04,987 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:35:04,988 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:35:04,988 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [351785075] [2021-06-05 20:35:04,988 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [351785075] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:35:04,988 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:35:04,988 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 20:35:04,988 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [672700902] [2021-06-05 20:35:04,988 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 20:35:04,988 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:35:04,988 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 20:35:04,988 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:35:04,988 INFO L87 Difference]: Start difference. First operand 426 states and 1039 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:35:05,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:35:05,132 INFO L93 Difference]: Finished difference Result 558 states and 1354 transitions. [2021-06-05 20:35:05,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 20:35:05,133 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:35:05,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:35:05,133 INFO L225 Difference]: With dead ends: 558 [2021-06-05 20:35:05,133 INFO L226 Difference]: Without dead ends: 451 [2021-06-05 20:35:05,133 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 51.9ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:35:05,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 451 states. [2021-06-05 20:35:05,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 451 to 436. [2021-06-05 20:35:05,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 436 states, 435 states have (on average 2.439080459770115) internal successors, (1061), 435 states have internal predecessors, (1061), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:35:05,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 436 states to 436 states and 1061 transitions. [2021-06-05 20:35:05,137 INFO L78 Accepts]: Start accepts. Automaton has 436 states and 1061 transitions. Word has length 26 [2021-06-05 20:35:05,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:35:05,137 INFO L482 AbstractCegarLoop]: Abstraction has 436 states and 1061 transitions. [2021-06-05 20:35:05,137 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:35:05,137 INFO L276 IsEmpty]: Start isEmpty. Operand 436 states and 1061 transitions. [2021-06-05 20:35:05,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:35:05,138 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:35:05,138 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:35:05,138 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable369 [2021-06-05 20:35:05,138 INFO L430 AbstractCegarLoop]: === Iteration 371 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:35:05,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:35:05,138 INFO L82 PathProgramCache]: Analyzing trace with hash 261581200, now seen corresponding path program 369 times [2021-06-05 20:35:05,138 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:35:05,138 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [991631963] [2021-06-05 20:35:05,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:35:05,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:35:05,195 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:35:05,195 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:35:05,195 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [991631963] [2021-06-05 20:35:05,195 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [991631963] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:35:05,195 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:35:05,195 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 20:35:05,195 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1505528167] [2021-06-05 20:35:05,195 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 20:35:05,195 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:35:05,195 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 20:35:05,195 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:35:05,196 INFO L87 Difference]: Start difference. First operand 436 states and 1061 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:35:05,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:35:05,342 INFO L93 Difference]: Finished difference Result 542 states and 1322 transitions. [2021-06-05 20:35:05,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 20:35:05,342 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:35:05,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:35:05,343 INFO L225 Difference]: With dead ends: 542 [2021-06-05 20:35:05,343 INFO L226 Difference]: Without dead ends: 443 [2021-06-05 20:35:05,343 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 50.3ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:35:05,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 443 states. [2021-06-05 20:35:05,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 443 to 438. [2021-06-05 20:35:05,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 438 states, 437 states have (on average 2.4393592677345537) internal successors, (1066), 437 states have internal predecessors, (1066), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:35:05,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 438 states to 438 states and 1066 transitions. [2021-06-05 20:35:05,347 INFO L78 Accepts]: Start accepts. Automaton has 438 states and 1066 transitions. Word has length 26 [2021-06-05 20:35:05,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:35:05,347 INFO L482 AbstractCegarLoop]: Abstraction has 438 states and 1066 transitions. [2021-06-05 20:35:05,347 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:35:05,347 INFO L276 IsEmpty]: Start isEmpty. Operand 438 states and 1066 transitions. [2021-06-05 20:35:05,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:35:05,348 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:35:05,348 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:35:05,348 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable370 [2021-06-05 20:35:05,348 INFO L430 AbstractCegarLoop]: === Iteration 372 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:35:05,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:35:05,348 INFO L82 PathProgramCache]: Analyzing trace with hash 654039856, now seen corresponding path program 370 times [2021-06-05 20:35:05,348 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:35:05,348 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1935323217] [2021-06-05 20:35:05,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:35:05,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:35:05,402 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:35:05,402 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:35:05,402 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1935323217] [2021-06-05 20:35:05,402 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1935323217] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:35:05,402 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:35:05,402 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 20:35:05,402 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1663292927] [2021-06-05 20:35:05,402 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 20:35:05,402 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:35:05,402 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 20:35:05,403 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:35:05,403 INFO L87 Difference]: Start difference. First operand 438 states and 1066 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:35:05,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:35:05,545 INFO L93 Difference]: Finished difference Result 571 states and 1384 transitions. [2021-06-05 20:35:05,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 20:35:05,545 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:35:05,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:35:05,546 INFO L225 Difference]: With dead ends: 571 [2021-06-05 20:35:05,546 INFO L226 Difference]: Without dead ends: 461 [2021-06-05 20:35:05,546 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 47.6ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:35:05,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 461 states. [2021-06-05 20:35:05,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 461 to 445. [2021-06-05 20:35:05,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 445 states, 444 states have (on average 2.436936936936937) internal successors, (1082), 444 states have internal predecessors, (1082), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:35:05,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 445 states to 445 states and 1082 transitions. [2021-06-05 20:35:05,550 INFO L78 Accepts]: Start accepts. Automaton has 445 states and 1082 transitions. Word has length 26 [2021-06-05 20:35:05,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:35:05,550 INFO L482 AbstractCegarLoop]: Abstraction has 445 states and 1082 transitions. [2021-06-05 20:35:05,550 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:35:05,550 INFO L276 IsEmpty]: Start isEmpty. Operand 445 states and 1082 transitions. [2021-06-05 20:35:05,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:35:05,551 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:35:05,551 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:35:05,551 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable371 [2021-06-05 20:35:05,551 INFO L430 AbstractCegarLoop]: === Iteration 373 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:35:05,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:35:05,551 INFO L82 PathProgramCache]: Analyzing trace with hash -850798962, now seen corresponding path program 371 times [2021-06-05 20:35:05,551 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:35:05,551 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1550853627] [2021-06-05 20:35:05,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:35:05,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:35:05,605 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:35:05,606 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:35:05,606 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1550853627] [2021-06-05 20:35:05,606 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1550853627] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:35:05,606 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:35:05,606 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 20:35:05,606 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1896034351] [2021-06-05 20:35:05,606 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 20:35:05,606 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:35:05,606 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 20:35:05,606 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:35:05,606 INFO L87 Difference]: Start difference. First operand 445 states and 1082 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:35:05,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:35:05,749 INFO L93 Difference]: Finished difference Result 570 states and 1380 transitions. [2021-06-05 20:35:05,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 20:35:05,749 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:35:05,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:35:05,750 INFO L225 Difference]: With dead ends: 570 [2021-06-05 20:35:05,750 INFO L226 Difference]: Without dead ends: 468 [2021-06-05 20:35:05,750 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 48.1ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:35:05,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 468 states. [2021-06-05 20:35:05,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 468 to 452. [2021-06-05 20:35:05,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 452 states, 451 states have (on average 2.432372505543237) internal successors, (1097), 451 states have internal predecessors, (1097), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:35:05,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 452 states to 452 states and 1097 transitions. [2021-06-05 20:35:05,754 INFO L78 Accepts]: Start accepts. Automaton has 452 states and 1097 transitions. Word has length 26 [2021-06-05 20:35:05,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:35:05,754 INFO L482 AbstractCegarLoop]: Abstraction has 452 states and 1097 transitions. [2021-06-05 20:35:05,754 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:35:05,754 INFO L276 IsEmpty]: Start isEmpty. Operand 452 states and 1097 transitions. [2021-06-05 20:35:05,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:35:05,755 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:35:05,755 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:35:05,755 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable372 [2021-06-05 20:35:05,755 INFO L430 AbstractCegarLoop]: === Iteration 374 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:35:05,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:35:05,755 INFO L82 PathProgramCache]: Analyzing trace with hash 1773999346, now seen corresponding path program 372 times [2021-06-05 20:35:05,755 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:35:05,755 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [435831916] [2021-06-05 20:35:05,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:35:05,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:35:05,809 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:35:05,810 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:35:05,810 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [435831916] [2021-06-05 20:35:05,810 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [435831916] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:35:05,810 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:35:05,810 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 20:35:05,810 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [298236829] [2021-06-05 20:35:05,810 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 20:35:05,810 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:35:05,810 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 20:35:05,810 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:35:05,810 INFO L87 Difference]: Start difference. First operand 452 states and 1097 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:35:05,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:35:05,962 INFO L93 Difference]: Finished difference Result 564 states and 1379 transitions. [2021-06-05 20:35:05,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 20:35:05,963 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:35:05,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:35:05,963 INFO L225 Difference]: With dead ends: 564 [2021-06-05 20:35:05,963 INFO L226 Difference]: Without dead ends: 467 [2021-06-05 20:35:05,963 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 48.1ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:35:05,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 467 states. [2021-06-05 20:35:05,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 467 to 457. [2021-06-05 20:35:05,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 457 states, 456 states have (on average 2.43859649122807) internal successors, (1112), 456 states have internal predecessors, (1112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:35:05,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 457 states to 457 states and 1112 transitions. [2021-06-05 20:35:05,967 INFO L78 Accepts]: Start accepts. Automaton has 457 states and 1112 transitions. Word has length 26 [2021-06-05 20:35:05,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:35:05,967 INFO L482 AbstractCegarLoop]: Abstraction has 457 states and 1112 transitions. [2021-06-05 20:35:05,968 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:35:05,968 INFO L276 IsEmpty]: Start isEmpty. Operand 457 states and 1112 transitions. [2021-06-05 20:35:05,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:35:05,968 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:35:05,968 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:35:05,968 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable373 [2021-06-05 20:35:05,968 INFO L430 AbstractCegarLoop]: === Iteration 375 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:35:05,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:35:05,968 INFO L82 PathProgramCache]: Analyzing trace with hash 381854800, now seen corresponding path program 373 times [2021-06-05 20:35:05,968 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:35:05,968 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1460247473] [2021-06-05 20:35:05,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:35:05,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:35:06,022 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:35:06,023 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:35:06,023 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1460247473] [2021-06-05 20:35:06,023 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1460247473] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:35:06,023 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:35:06,023 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 20:35:06,023 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1072865408] [2021-06-05 20:35:06,023 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 20:35:06,023 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:35:06,023 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 20:35:06,023 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:35:06,023 INFO L87 Difference]: Start difference. First operand 457 states and 1112 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:35:06,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:35:06,163 INFO L93 Difference]: Finished difference Result 564 states and 1377 transitions. [2021-06-05 20:35:06,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 20:35:06,163 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:35:06,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:35:06,164 INFO L225 Difference]: With dead ends: 564 [2021-06-05 20:35:06,164 INFO L226 Difference]: Without dead ends: 460 [2021-06-05 20:35:06,164 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 47.9ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:35:06,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 460 states. [2021-06-05 20:35:06,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 460 to 445. [2021-06-05 20:35:06,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 445 states, 444 states have (on average 2.434684684684685) internal successors, (1081), 444 states have internal predecessors, (1081), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:35:06,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 445 states to 445 states and 1081 transitions. [2021-06-05 20:35:06,168 INFO L78 Accepts]: Start accepts. Automaton has 445 states and 1081 transitions. Word has length 26 [2021-06-05 20:35:06,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:35:06,168 INFO L482 AbstractCegarLoop]: Abstraction has 445 states and 1081 transitions. [2021-06-05 20:35:06,168 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:35:06,168 INFO L276 IsEmpty]: Start isEmpty. Operand 445 states and 1081 transitions. [2021-06-05 20:35:06,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:35:06,168 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:35:06,168 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:35:06,169 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable374 [2021-06-05 20:35:06,169 INFO L430 AbstractCegarLoop]: === Iteration 376 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:35:06,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:35:06,169 INFO L82 PathProgramCache]: Analyzing trace with hash 558338404, now seen corresponding path program 374 times [2021-06-05 20:35:06,169 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:35:06,169 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1686926807] [2021-06-05 20:35:06,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:35:06,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:35:06,221 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:35:06,221 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:35:06,221 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1686926807] [2021-06-05 20:35:06,221 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1686926807] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:35:06,221 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:35:06,221 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 20:35:06,221 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [92302542] [2021-06-05 20:35:06,221 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 20:35:06,222 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:35:06,222 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 20:35:06,222 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:35:06,222 INFO L87 Difference]: Start difference. First operand 445 states and 1081 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:35:06,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:35:06,361 INFO L93 Difference]: Finished difference Result 598 states and 1453 transitions. [2021-06-05 20:35:06,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 20:35:06,362 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:35:06,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:35:06,362 INFO L225 Difference]: With dead ends: 598 [2021-06-05 20:35:06,362 INFO L226 Difference]: Without dead ends: 471 [2021-06-05 20:35:06,362 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 46.0ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:35:06,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 471 states. [2021-06-05 20:35:06,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 471 to 445. [2021-06-05 20:35:06,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 445 states, 444 states have (on average 2.425675675675676) internal successors, (1077), 444 states have internal predecessors, (1077), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:35:06,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 445 states to 445 states and 1077 transitions. [2021-06-05 20:35:06,366 INFO L78 Accepts]: Start accepts. Automaton has 445 states and 1077 transitions. Word has length 26 [2021-06-05 20:35:06,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:35:06,366 INFO L482 AbstractCegarLoop]: Abstraction has 445 states and 1077 transitions. [2021-06-05 20:35:06,366 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:35:06,366 INFO L276 IsEmpty]: Start isEmpty. Operand 445 states and 1077 transitions. [2021-06-05 20:35:06,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:35:06,367 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:35:06,367 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:35:06,367 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable375 [2021-06-05 20:35:06,367 INFO L430 AbstractCegarLoop]: === Iteration 377 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:35:06,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:35:06,367 INFO L82 PathProgramCache]: Analyzing trace with hash 675595906, now seen corresponding path program 375 times [2021-06-05 20:35:06,367 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:35:06,367 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1267355465] [2021-06-05 20:35:06,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:35:06,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:35:06,421 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:35:06,421 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:35:06,421 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1267355465] [2021-06-05 20:35:06,421 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1267355465] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:35:06,421 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:35:06,421 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 20:35:06,421 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [910841887] [2021-06-05 20:35:06,421 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 20:35:06,421 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:35:06,422 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 20:35:06,422 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:35:06,422 INFO L87 Difference]: Start difference. First operand 445 states and 1077 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:35:06,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:35:06,567 INFO L93 Difference]: Finished difference Result 583 states and 1427 transitions. [2021-06-05 20:35:06,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 20:35:06,567 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:35:06,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:35:06,568 INFO L225 Difference]: With dead ends: 583 [2021-06-05 20:35:06,568 INFO L226 Difference]: Without dead ends: 464 [2021-06-05 20:35:06,568 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 47.4ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:35:06,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 464 states. [2021-06-05 20:35:06,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 464 to 450. [2021-06-05 20:35:06,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 450 states, 449 states have (on average 2.4320712694877504) internal successors, (1092), 449 states have internal predecessors, (1092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:35:06,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 450 states to 450 states and 1092 transitions. [2021-06-05 20:35:06,572 INFO L78 Accepts]: Start accepts. Automaton has 450 states and 1092 transitions. Word has length 26 [2021-06-05 20:35:06,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:35:06,572 INFO L482 AbstractCegarLoop]: Abstraction has 450 states and 1092 transitions. [2021-06-05 20:35:06,572 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:35:06,572 INFO L276 IsEmpty]: Start isEmpty. Operand 450 states and 1092 transitions. [2021-06-05 20:35:06,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:35:06,573 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:35:06,573 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:35:06,573 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable376 [2021-06-05 20:35:06,573 INFO L430 AbstractCegarLoop]: === Iteration 378 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:35:06,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:35:06,573 INFO L82 PathProgramCache]: Analyzing trace with hash -893332636, now seen corresponding path program 376 times [2021-06-05 20:35:06,573 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:35:06,573 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1591321080] [2021-06-05 20:35:06,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:35:06,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:35:06,627 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:35:06,627 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:35:06,627 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1591321080] [2021-06-05 20:35:06,627 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1591321080] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:35:06,627 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:35:06,627 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 20:35:06,627 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1865958921] [2021-06-05 20:35:06,627 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 20:35:06,627 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:35:06,627 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 20:35:06,627 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:35:06,627 INFO L87 Difference]: Start difference. First operand 450 states and 1092 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:35:06,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:35:06,766 INFO L93 Difference]: Finished difference Result 599 states and 1449 transitions. [2021-06-05 20:35:06,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 20:35:06,767 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:35:06,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:35:06,767 INFO L225 Difference]: With dead ends: 599 [2021-06-05 20:35:06,767 INFO L226 Difference]: Without dead ends: 472 [2021-06-05 20:35:06,767 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 47.3ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:35:06,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 472 states. [2021-06-05 20:35:06,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 472 to 450. [2021-06-05 20:35:06,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 450 states, 449 states have (on average 2.387527839643653) internal successors, (1072), 449 states have internal predecessors, (1072), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:35:06,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 450 states to 450 states and 1072 transitions. [2021-06-05 20:35:06,771 INFO L78 Accepts]: Start accepts. Automaton has 450 states and 1072 transitions. Word has length 26 [2021-06-05 20:35:06,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:35:06,771 INFO L482 AbstractCegarLoop]: Abstraction has 450 states and 1072 transitions. [2021-06-05 20:35:06,771 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:35:06,772 INFO L276 IsEmpty]: Start isEmpty. Operand 450 states and 1072 transitions. [2021-06-05 20:35:06,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:35:06,772 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:35:06,772 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:35:06,772 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable377 [2021-06-05 20:35:06,772 INFO L430 AbstractCegarLoop]: === Iteration 379 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:35:06,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:35:06,772 INFO L82 PathProgramCache]: Analyzing trace with hash -700651216, now seen corresponding path program 377 times [2021-06-05 20:35:06,772 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:35:06,772 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [310068375] [2021-06-05 20:35:06,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:35:06,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:35:06,825 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:35:06,826 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:35:06,826 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [310068375] [2021-06-05 20:35:06,826 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [310068375] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:35:06,826 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:35:06,826 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 20:35:06,826 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [362393859] [2021-06-05 20:35:06,826 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 20:35:06,826 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:35:06,826 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 20:35:06,826 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:35:06,826 INFO L87 Difference]: Start difference. First operand 450 states and 1072 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:35:06,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:35:06,961 INFO L93 Difference]: Finished difference Result 553 states and 1321 transitions. [2021-06-05 20:35:06,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 20:35:06,961 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:35:06,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:35:06,962 INFO L225 Difference]: With dead ends: 553 [2021-06-05 20:35:06,962 INFO L226 Difference]: Without dead ends: 420 [2021-06-05 20:35:06,962 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 47.1ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:35:06,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 420 states. [2021-06-05 20:35:06,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 420 to 403. [2021-06-05 20:35:06,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 403 states, 402 states have (on average 2.388059701492537) internal successors, (960), 402 states have internal predecessors, (960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:35:06,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 403 states to 403 states and 960 transitions. [2021-06-05 20:35:06,966 INFO L78 Accepts]: Start accepts. Automaton has 403 states and 960 transitions. Word has length 26 [2021-06-05 20:35:06,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:35:06,966 INFO L482 AbstractCegarLoop]: Abstraction has 403 states and 960 transitions. [2021-06-05 20:35:06,966 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:35:06,966 INFO L276 IsEmpty]: Start isEmpty. Operand 403 states and 960 transitions. [2021-06-05 20:35:06,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:35:06,966 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:35:06,966 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:35:06,966 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable378 [2021-06-05 20:35:06,966 INFO L430 AbstractCegarLoop]: === Iteration 380 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:35:06,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:35:06,966 INFO L82 PathProgramCache]: Analyzing trace with hash 25600402, now seen corresponding path program 378 times [2021-06-05 20:35:06,966 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:35:06,967 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [173422471] [2021-06-05 20:35:06,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:35:06,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:35:07,021 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:35:07,021 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:35:07,021 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [173422471] [2021-06-05 20:35:07,021 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [173422471] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:35:07,021 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:35:07,021 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:35:07,022 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1339076895] [2021-06-05 20:35:07,022 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-05 20:35:07,022 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:35:07,022 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-05 20:35:07,022 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:35:07,022 INFO L87 Difference]: Start difference. First operand 403 states and 960 transitions. Second operand has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:35:07,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:35:07,140 INFO L93 Difference]: Finished difference Result 542 states and 1283 transitions. [2021-06-05 20:35:07,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-05 20:35:07,140 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:35:07,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:35:07,141 INFO L225 Difference]: With dead ends: 542 [2021-06-05 20:35:07,141 INFO L226 Difference]: Without dead ends: 426 [2021-06-05 20:35:07,141 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 45.6ms TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:35:07,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 426 states. [2021-06-05 20:35:07,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 426 to 413. [2021-06-05 20:35:07,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 413 states, 412 states have (on average 2.3640776699029127) internal successors, (974), 412 states have internal predecessors, (974), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:35:07,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 413 states to 413 states and 974 transitions. [2021-06-05 20:35:07,145 INFO L78 Accepts]: Start accepts. Automaton has 413 states and 974 transitions. Word has length 26 [2021-06-05 20:35:07,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:35:07,145 INFO L482 AbstractCegarLoop]: Abstraction has 413 states and 974 transitions. [2021-06-05 20:35:07,145 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:35:07,145 INFO L276 IsEmpty]: Start isEmpty. Operand 413 states and 974 transitions. [2021-06-05 20:35:07,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:35:07,145 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:35:07,145 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:35:07,145 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable379 [2021-06-05 20:35:07,145 INFO L430 AbstractCegarLoop]: === Iteration 381 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:35:07,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:35:07,146 INFO L82 PathProgramCache]: Analyzing trace with hash -573666220, now seen corresponding path program 379 times [2021-06-05 20:35:07,146 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:35:07,146 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [773521616] [2021-06-05 20:35:07,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:35:07,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:35:07,202 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:35:07,202 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:35:07,202 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [773521616] [2021-06-05 20:35:07,202 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [773521616] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:35:07,202 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:35:07,202 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 20:35:07,202 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [560377927] [2021-06-05 20:35:07,202 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 20:35:07,202 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:35:07,202 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 20:35:07,203 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:35:07,203 INFO L87 Difference]: Start difference. First operand 413 states and 974 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:35:07,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:35:07,346 INFO L93 Difference]: Finished difference Result 537 states and 1263 transitions. [2021-06-05 20:35:07,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 20:35:07,347 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:35:07,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:35:07,347 INFO L225 Difference]: With dead ends: 537 [2021-06-05 20:35:07,347 INFO L226 Difference]: Without dead ends: 418 [2021-06-05 20:35:07,347 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 47.6ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:35:07,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 418 states. [2021-06-05 20:35:07,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 418 to 403. [2021-06-05 20:35:07,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 403 states, 402 states have (on average 2.3681592039800994) internal successors, (952), 402 states have internal predecessors, (952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:35:07,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 403 states to 403 states and 952 transitions. [2021-06-05 20:35:07,351 INFO L78 Accepts]: Start accepts. Automaton has 403 states and 952 transitions. Word has length 26 [2021-06-05 20:35:07,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:35:07,351 INFO L482 AbstractCegarLoop]: Abstraction has 403 states and 952 transitions. [2021-06-05 20:35:07,351 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:35:07,351 INFO L276 IsEmpty]: Start isEmpty. Operand 403 states and 952 transitions. [2021-06-05 20:35:07,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:35:07,351 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:35:07,351 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:35:07,352 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable380 [2021-06-05 20:35:07,352 INFO L430 AbstractCegarLoop]: === Iteration 382 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:35:07,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:35:07,352 INFO L82 PathProgramCache]: Analyzing trace with hash -1455837904, now seen corresponding path program 380 times [2021-06-05 20:35:07,352 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:35:07,352 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [758722501] [2021-06-05 20:35:07,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:35:07,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:35:07,411 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:35:07,411 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:35:07,411 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [758722501] [2021-06-05 20:35:07,411 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [758722501] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:35:07,411 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:35:07,411 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 20:35:07,411 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1828333387] [2021-06-05 20:35:07,411 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 20:35:07,411 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:35:07,411 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 20:35:07,412 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:35:07,412 INFO L87 Difference]: Start difference. First operand 403 states and 952 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:35:07,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:35:07,563 INFO L93 Difference]: Finished difference Result 526 states and 1249 transitions. [2021-06-05 20:35:07,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 20:35:07,563 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:35:07,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:35:07,564 INFO L225 Difference]: With dead ends: 526 [2021-06-05 20:35:07,564 INFO L226 Difference]: Without dead ends: 416 [2021-06-05 20:35:07,564 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 51.1ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:35:07,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 416 states. [2021-06-05 20:35:07,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 416 to 401. [2021-06-05 20:35:07,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 401 states, 400 states have (on average 2.365) internal successors, (946), 400 states have internal predecessors, (946), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:35:07,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 401 states to 401 states and 946 transitions. [2021-06-05 20:35:07,568 INFO L78 Accepts]: Start accepts. Automaton has 401 states and 946 transitions. Word has length 26 [2021-06-05 20:35:07,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:35:07,568 INFO L482 AbstractCegarLoop]: Abstraction has 401 states and 946 transitions. [2021-06-05 20:35:07,568 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:35:07,568 INFO L276 IsEmpty]: Start isEmpty. Operand 401 states and 946 transitions. [2021-06-05 20:35:07,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:35:07,568 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:35:07,568 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:35:07,568 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable381 [2021-06-05 20:35:07,568 INFO L430 AbstractCegarLoop]: === Iteration 383 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:35:07,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:35:07,568 INFO L82 PathProgramCache]: Analyzing trace with hash -2055104526, now seen corresponding path program 381 times [2021-06-05 20:35:07,569 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:35:07,569 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1441685551] [2021-06-05 20:35:07,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:35:07,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:35:07,624 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:35:07,624 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:35:07,624 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1441685551] [2021-06-05 20:35:07,624 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1441685551] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:35:07,624 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:35:07,624 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 20:35:07,624 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1432727312] [2021-06-05 20:35:07,624 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 20:35:07,624 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:35:07,624 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 20:35:07,625 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:35:07,625 INFO L87 Difference]: Start difference. First operand 401 states and 946 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:35:07,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:35:07,775 INFO L93 Difference]: Finished difference Result 506 states and 1204 transitions. [2021-06-05 20:35:07,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 20:35:07,775 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:35:07,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:35:07,775 INFO L225 Difference]: With dead ends: 506 [2021-06-05 20:35:07,775 INFO L226 Difference]: Without dead ends: 407 [2021-06-05 20:35:07,775 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 48.3ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:35:07,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 407 states. [2021-06-05 20:35:07,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 407 to 401. [2021-06-05 20:35:07,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 401 states, 400 states have (on average 2.3625) internal successors, (945), 400 states have internal predecessors, (945), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:35:07,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 401 states to 401 states and 945 transitions. [2021-06-05 20:35:07,779 INFO L78 Accepts]: Start accepts. Automaton has 401 states and 945 transitions. Word has length 26 [2021-06-05 20:35:07,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:35:07,779 INFO L482 AbstractCegarLoop]: Abstraction has 401 states and 945 transitions. [2021-06-05 20:35:07,779 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:35:07,779 INFO L276 IsEmpty]: Start isEmpty. Operand 401 states and 945 transitions. [2021-06-05 20:35:07,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:35:07,780 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:35:07,780 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:35:07,780 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable382 [2021-06-05 20:35:07,780 INFO L430 AbstractCegarLoop]: === Iteration 384 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:35:07,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:35:07,780 INFO L82 PathProgramCache]: Analyzing trace with hash -542686380, now seen corresponding path program 382 times [2021-06-05 20:35:07,780 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:35:07,780 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1817473856] [2021-06-05 20:35:07,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:35:07,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:35:07,842 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:35:07,842 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:35:07,842 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1817473856] [2021-06-05 20:35:07,842 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1817473856] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:35:07,842 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:35:07,842 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 20:35:07,842 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1876567159] [2021-06-05 20:35:07,842 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 20:35:07,842 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:35:07,842 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 20:35:07,842 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:35:07,842 INFO L87 Difference]: Start difference. First operand 401 states and 945 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:35:07,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:35:07,992 INFO L93 Difference]: Finished difference Result 513 states and 1227 transitions. [2021-06-05 20:35:07,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 20:35:07,992 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:35:07,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:35:07,993 INFO L225 Difference]: With dead ends: 513 [2021-06-05 20:35:07,993 INFO L226 Difference]: Without dead ends: 416 [2021-06-05 20:35:07,993 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 48.5ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:35:07,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 416 states. [2021-06-05 20:35:07,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 416 to 406. [2021-06-05 20:35:07,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 406 states, 405 states have (on average 2.3703703703703702) internal successors, (960), 405 states have internal predecessors, (960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:35:07,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 406 states to 406 states and 960 transitions. [2021-06-05 20:35:07,997 INFO L78 Accepts]: Start accepts. Automaton has 406 states and 960 transitions. Word has length 26 [2021-06-05 20:35:07,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:35:07,997 INFO L482 AbstractCegarLoop]: Abstraction has 406 states and 960 transitions. [2021-06-05 20:35:07,997 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:35:07,997 INFO L276 IsEmpty]: Start isEmpty. Operand 406 states and 960 transitions. [2021-06-05 20:35:07,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:35:07,997 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:35:07,997 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:35:07,997 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable383 [2021-06-05 20:35:07,998 INFO L430 AbstractCegarLoop]: === Iteration 385 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:35:07,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:35:07,998 INFO L82 PathProgramCache]: Analyzing trace with hash -1934830926, now seen corresponding path program 383 times [2021-06-05 20:35:07,998 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:35:07,998 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1225729999] [2021-06-05 20:35:07,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:35:07,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:35:08,052 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:35:08,052 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:35:08,052 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1225729999] [2021-06-05 20:35:08,053 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1225729999] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:35:08,053 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:35:08,053 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 20:35:08,053 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [369271133] [2021-06-05 20:35:08,053 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 20:35:08,053 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:35:08,053 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 20:35:08,053 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:35:08,053 INFO L87 Difference]: Start difference. First operand 406 states and 960 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:35:08,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:35:08,195 INFO L93 Difference]: Finished difference Result 532 states and 1254 transitions. [2021-06-05 20:35:08,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 20:35:08,195 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:35:08,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:35:08,196 INFO L225 Difference]: With dead ends: 532 [2021-06-05 20:35:08,196 INFO L226 Difference]: Without dead ends: 430 [2021-06-05 20:35:08,196 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 47.9ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:35:08,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 430 states. [2021-06-05 20:35:08,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 430 to 416. [2021-06-05 20:35:08,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 416 states, 415 states have (on average 2.346987951807229) internal successors, (974), 415 states have internal predecessors, (974), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:35:08,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 416 states to 416 states and 974 transitions. [2021-06-05 20:35:08,200 INFO L78 Accepts]: Start accepts. Automaton has 416 states and 974 transitions. Word has length 26 [2021-06-05 20:35:08,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:35:08,200 INFO L482 AbstractCegarLoop]: Abstraction has 416 states and 974 transitions. [2021-06-05 20:35:08,200 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:35:08,200 INFO L276 IsEmpty]: Start isEmpty. Operand 416 states and 974 transitions. [2021-06-05 20:35:08,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:35:08,200 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:35:08,201 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:35:08,201 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable384 [2021-06-05 20:35:08,201 INFO L430 AbstractCegarLoop]: === Iteration 386 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:35:08,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:35:08,201 INFO L82 PathProgramCache]: Analyzing trace with hash -1603464470, now seen corresponding path program 384 times [2021-06-05 20:35:08,201 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:35:08,201 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1473128523] [2021-06-05 20:35:08,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:35:08,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:35:08,255 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:35:08,255 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:35:08,255 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1473128523] [2021-06-05 20:35:08,255 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1473128523] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:35:08,255 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:35:08,255 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 20:35:08,255 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2050774034] [2021-06-05 20:35:08,255 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 20:35:08,255 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:35:08,255 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 20:35:08,256 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:35:08,256 INFO L87 Difference]: Start difference. First operand 416 states and 974 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:35:08,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:35:08,394 INFO L93 Difference]: Finished difference Result 513 states and 1207 transitions. [2021-06-05 20:35:08,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 20:35:08,395 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:35:08,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:35:08,395 INFO L225 Difference]: With dead ends: 513 [2021-06-05 20:35:08,395 INFO L226 Difference]: Without dead ends: 404 [2021-06-05 20:35:08,395 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 47.6ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:35:08,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 404 states. [2021-06-05 20:35:08,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 404 to 381. [2021-06-05 20:35:08,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 381 states, 380 states have (on average 2.363157894736842) internal successors, (898), 380 states have internal predecessors, (898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:35:08,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 381 states to 381 states and 898 transitions. [2021-06-05 20:35:08,399 INFO L78 Accepts]: Start accepts. Automaton has 381 states and 898 transitions. Word has length 26 [2021-06-05 20:35:08,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:35:08,399 INFO L482 AbstractCegarLoop]: Abstraction has 381 states and 898 transitions. [2021-06-05 20:35:08,399 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:35:08,399 INFO L276 IsEmpty]: Start isEmpty. Operand 381 states and 898 transitions. [2021-06-05 20:35:08,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:35:08,399 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:35:08,399 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:35:08,399 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable385 [2021-06-05 20:35:08,399 INFO L430 AbstractCegarLoop]: === Iteration 387 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:35:08,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:35:08,400 INFO L82 PathProgramCache]: Analyzing trace with hash 1538144538, now seen corresponding path program 385 times [2021-06-05 20:35:08,400 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:35:08,400 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [995377109] [2021-06-05 20:35:08,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:35:08,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:35:08,453 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:35:08,453 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:35:08,453 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [995377109] [2021-06-05 20:35:08,453 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [995377109] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:35:08,453 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:35:08,453 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 20:35:08,453 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1530698723] [2021-06-05 20:35:08,453 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 20:35:08,453 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:35:08,454 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 20:35:08,454 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:35:08,454 INFO L87 Difference]: Start difference. First operand 381 states and 898 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:35:08,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:35:08,590 INFO L93 Difference]: Finished difference Result 499 states and 1177 transitions. [2021-06-05 20:35:08,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 20:35:08,591 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:35:08,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:35:08,591 INFO L225 Difference]: With dead ends: 499 [2021-06-05 20:35:08,591 INFO L226 Difference]: Without dead ends: 381 [2021-06-05 20:35:08,591 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 47.3ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:35:08,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 381 states. [2021-06-05 20:35:08,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 381 to 381. [2021-06-05 20:35:08,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 381 states, 380 states have (on average 2.331578947368421) internal successors, (886), 380 states have internal predecessors, (886), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:35:08,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 381 states to 381 states and 886 transitions. [2021-06-05 20:35:08,594 INFO L78 Accepts]: Start accepts. Automaton has 381 states and 886 transitions. Word has length 26 [2021-06-05 20:35:08,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:35:08,594 INFO L482 AbstractCegarLoop]: Abstraction has 381 states and 886 transitions. [2021-06-05 20:35:08,594 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:35:08,595 INFO L276 IsEmpty]: Start isEmpty. Operand 381 states and 886 transitions. [2021-06-05 20:35:08,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:35:08,595 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:35:08,595 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:35:08,595 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable386 [2021-06-05 20:35:08,595 INFO L430 AbstractCegarLoop]: === Iteration 388 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:35:08,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:35:08,595 INFO L82 PathProgramCache]: Analyzing trace with hash 629893402, now seen corresponding path program 386 times [2021-06-05 20:35:08,595 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:35:08,595 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [635919839] [2021-06-05 20:35:08,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:35:08,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:35:08,649 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:35:08,649 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:35:08,649 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [635919839] [2021-06-05 20:35:08,649 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [635919839] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:35:08,649 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:35:08,649 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 20:35:08,649 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2048757207] [2021-06-05 20:35:08,649 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 20:35:08,650 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:35:08,650 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 20:35:08,650 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:35:08,650 INFO L87 Difference]: Start difference. First operand 381 states and 886 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:35:08,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:35:08,784 INFO L93 Difference]: Finished difference Result 491 states and 1149 transitions. [2021-06-05 20:35:08,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 20:35:08,784 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:35:08,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:35:08,784 INFO L225 Difference]: With dead ends: 491 [2021-06-05 20:35:08,784 INFO L226 Difference]: Without dead ends: 384 [2021-06-05 20:35:08,785 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 47.6ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:35:08,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 384 states. [2021-06-05 20:35:08,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 384 to 381. [2021-06-05 20:35:08,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 381 states, 380 states have (on average 2.3263157894736843) internal successors, (884), 380 states have internal predecessors, (884), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:35:08,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 381 states to 381 states and 884 transitions. [2021-06-05 20:35:08,788 INFO L78 Accepts]: Start accepts. Automaton has 381 states and 884 transitions. Word has length 26 [2021-06-05 20:35:08,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:35:08,788 INFO L482 AbstractCegarLoop]: Abstraction has 381 states and 884 transitions. [2021-06-05 20:35:08,788 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:35:08,788 INFO L276 IsEmpty]: Start isEmpty. Operand 381 states and 884 transitions. [2021-06-05 20:35:08,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:35:08,788 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:35:08,788 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:35:08,788 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable387 [2021-06-05 20:35:08,789 INFO L430 AbstractCegarLoop]: === Iteration 389 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:35:08,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:35:08,789 INFO L82 PathProgramCache]: Analyzing trace with hash 1550469368, now seen corresponding path program 387 times [2021-06-05 20:35:08,789 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:35:08,789 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [63430186] [2021-06-05 20:35:08,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:35:08,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:35:08,858 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:35:08,858 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:35:08,858 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [63430186] [2021-06-05 20:35:08,858 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [63430186] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:35:08,858 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:35:08,858 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 20:35:08,858 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [178921635] [2021-06-05 20:35:08,859 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 20:35:08,859 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:35:08,859 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 20:35:08,859 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:35:08,859 INFO L87 Difference]: Start difference. First operand 381 states and 884 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:35:09,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:35:09,010 INFO L93 Difference]: Finished difference Result 484 states and 1132 transitions. [2021-06-05 20:35:09,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 20:35:09,010 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:35:09,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:35:09,011 INFO L225 Difference]: With dead ends: 484 [2021-06-05 20:35:09,011 INFO L226 Difference]: Without dead ends: 369 [2021-06-05 20:35:09,011 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 62.5ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:35:09,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 369 states. [2021-06-05 20:35:09,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 369 to 369. [2021-06-05 20:35:09,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 369 states, 368 states have (on average 2.3369565217391304) internal successors, (860), 368 states have internal predecessors, (860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:35:09,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 369 states to 369 states and 860 transitions. [2021-06-05 20:35:09,014 INFO L78 Accepts]: Start accepts. Automaton has 369 states and 860 transitions. Word has length 26 [2021-06-05 20:35:09,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:35:09,014 INFO L482 AbstractCegarLoop]: Abstraction has 369 states and 860 transitions. [2021-06-05 20:35:09,014 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:35:09,014 INFO L276 IsEmpty]: Start isEmpty. Operand 369 states and 860 transitions. [2021-06-05 20:35:09,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:35:09,015 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:35:09,015 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:35:09,015 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable388 [2021-06-05 20:35:09,015 INFO L430 AbstractCegarLoop]: === Iteration 390 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:35:09,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:35:09,015 INFO L82 PathProgramCache]: Analyzing trace with hash 924274646, now seen corresponding path program 388 times [2021-06-05 20:35:09,015 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:35:09,015 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1100580811] [2021-06-05 20:35:09,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:35:09,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:35:09,069 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:35:09,069 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:35:09,069 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1100580811] [2021-06-05 20:35:09,069 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1100580811] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:35:09,069 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:35:09,069 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 20:35:09,069 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1115632222] [2021-06-05 20:35:09,069 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 20:35:09,069 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:35:09,070 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 20:35:09,070 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:35:09,070 INFO L87 Difference]: Start difference. First operand 369 states and 860 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:35:09,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:35:09,209 INFO L93 Difference]: Finished difference Result 497 states and 1163 transitions. [2021-06-05 20:35:09,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 20:35:09,209 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:35:09,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:35:09,210 INFO L225 Difference]: With dead ends: 497 [2021-06-05 20:35:09,210 INFO L226 Difference]: Without dead ends: 349 [2021-06-05 20:35:09,210 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 47.5ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:35:09,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 349 states. [2021-06-05 20:35:09,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 349 to 345. [2021-06-05 20:35:09,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 345 states, 344 states have (on average 2.3197674418604652) internal successors, (798), 344 states have internal predecessors, (798), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:35:09,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 345 states to 345 states and 798 transitions. [2021-06-05 20:35:09,213 INFO L78 Accepts]: Start accepts. Automaton has 345 states and 798 transitions. Word has length 26 [2021-06-05 20:35:09,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:35:09,213 INFO L482 AbstractCegarLoop]: Abstraction has 345 states and 798 transitions. [2021-06-05 20:35:09,213 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:35:09,213 INFO L276 IsEmpty]: Start isEmpty. Operand 345 states and 798 transitions. [2021-06-05 20:35:09,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:35:09,213 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:35:09,213 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:35:09,213 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable389 [2021-06-05 20:35:09,213 INFO L430 AbstractCegarLoop]: === Iteration 391 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:35:09,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:35:09,214 INFO L82 PathProgramCache]: Analyzing trace with hash -1465978148, now seen corresponding path program 389 times [2021-06-05 20:35:09,214 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:35:09,214 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [618591405] [2021-06-05 20:35:09,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:35:09,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:35:09,267 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:35:09,267 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:35:09,267 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [618591405] [2021-06-05 20:35:09,268 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [618591405] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:35:09,268 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:35:09,268 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 20:35:09,268 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1129677381] [2021-06-05 20:35:09,268 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 20:35:09,268 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:35:09,268 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 20:35:09,268 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:35:09,268 INFO L87 Difference]: Start difference. First operand 345 states and 798 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:35:09,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:35:09,402 INFO L93 Difference]: Finished difference Result 469 states and 1098 transitions. [2021-06-05 20:35:09,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 20:35:09,402 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:35:09,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:35:09,402 INFO L225 Difference]: With dead ends: 469 [2021-06-05 20:35:09,402 INFO L226 Difference]: Without dead ends: 357 [2021-06-05 20:35:09,402 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 47.3ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:35:09,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 357 states. [2021-06-05 20:35:09,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 357 to 357. [2021-06-05 20:35:09,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 357 states, 356 states have (on average 2.308988764044944) internal successors, (822), 356 states have internal predecessors, (822), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:35:09,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 357 states to 357 states and 822 transitions. [2021-06-05 20:35:09,405 INFO L78 Accepts]: Start accepts. Automaton has 357 states and 822 transitions. Word has length 26 [2021-06-05 20:35:09,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:35:09,406 INFO L482 AbstractCegarLoop]: Abstraction has 357 states and 822 transitions. [2021-06-05 20:35:09,406 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:35:09,406 INFO L276 IsEmpty]: Start isEmpty. Operand 357 states and 822 transitions. [2021-06-05 20:35:09,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:35:09,406 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:35:09,406 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:35:09,406 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable390 [2021-06-05 20:35:09,406 INFO L430 AbstractCegarLoop]: === Iteration 392 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:35:09,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:35:09,406 INFO L82 PathProgramCache]: Analyzing trace with hash 1041532148, now seen corresponding path program 390 times [2021-06-05 20:35:09,406 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:35:09,406 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [633577965] [2021-06-05 20:35:09,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:35:09,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:35:09,462 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:35:09,463 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:35:09,463 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [633577965] [2021-06-05 20:35:09,463 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [633577965] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:35:09,463 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:35:09,463 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 20:35:09,463 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1804633233] [2021-06-05 20:35:09,463 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 20:35:09,463 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:35:09,463 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 20:35:09,463 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:35:09,463 INFO L87 Difference]: Start difference. First operand 357 states and 822 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:35:09,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:35:09,602 INFO L93 Difference]: Finished difference Result 474 states and 1113 transitions. [2021-06-05 20:35:09,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 20:35:09,603 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:35:09,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:35:09,603 INFO L225 Difference]: With dead ends: 474 [2021-06-05 20:35:09,603 INFO L226 Difference]: Without dead ends: 376 [2021-06-05 20:35:09,603 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 50.0ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:35:09,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 376 states. [2021-06-05 20:35:09,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 376 to 362. [2021-06-05 20:35:09,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 362 states, 361 states have (on average 2.3185595567867034) internal successors, (837), 361 states have internal predecessors, (837), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:35:09,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 362 states to 362 states and 837 transitions. [2021-06-05 20:35:09,606 INFO L78 Accepts]: Start accepts. Automaton has 362 states and 837 transitions. Word has length 26 [2021-06-05 20:35:09,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:35:09,606 INFO L482 AbstractCegarLoop]: Abstraction has 362 states and 837 transitions. [2021-06-05 20:35:09,606 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:35:09,606 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states and 837 transitions. [2021-06-05 20:35:09,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:35:09,607 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:35:09,607 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:35:09,607 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable391 [2021-06-05 20:35:09,607 INFO L430 AbstractCegarLoop]: === Iteration 393 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:35:09,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:35:09,607 INFO L82 PathProgramCache]: Analyzing trace with hash -527396394, now seen corresponding path program 391 times [2021-06-05 20:35:09,607 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:35:09,607 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1365314254] [2021-06-05 20:35:09,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:35:09,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:35:09,661 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:35:09,661 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:35:09,661 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1365314254] [2021-06-05 20:35:09,661 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1365314254] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:35:09,661 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:35:09,661 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 20:35:09,661 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2127747538] [2021-06-05 20:35:09,661 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 20:35:09,661 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:35:09,661 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 20:35:09,661 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:35:09,661 INFO L87 Difference]: Start difference. First operand 362 states and 837 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:35:09,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:35:09,796 INFO L93 Difference]: Finished difference Result 470 states and 1093 transitions. [2021-06-05 20:35:09,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 20:35:09,797 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:35:09,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:35:09,797 INFO L225 Difference]: With dead ends: 470 [2021-06-05 20:35:09,797 INFO L226 Difference]: Without dead ends: 364 [2021-06-05 20:35:09,797 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 47.3ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:35:09,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 364 states. [2021-06-05 20:35:09,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 364 to 345. [2021-06-05 20:35:09,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 345 states, 344 states have (on average 2.3052325581395348) internal successors, (793), 344 states have internal predecessors, (793), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:35:09,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 345 states to 345 states and 793 transitions. [2021-06-05 20:35:09,800 INFO L78 Accepts]: Start accepts. Automaton has 345 states and 793 transitions. Word has length 26 [2021-06-05 20:35:09,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:35:09,800 INFO L482 AbstractCegarLoop]: Abstraction has 345 states and 793 transitions. [2021-06-05 20:35:09,800 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:35:09,800 INFO L276 IsEmpty]: Start isEmpty. Operand 345 states and 793 transitions. [2021-06-05 20:35:09,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:35:09,801 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:35:09,801 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:35:09,801 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable392 [2021-06-05 20:35:09,801 INFO L430 AbstractCegarLoop]: === Iteration 394 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:35:09,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:35:09,801 INFO L82 PathProgramCache]: Analyzing trace with hash -273711274, now seen corresponding path program 392 times [2021-06-05 20:35:09,801 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:35:09,801 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [587056224] [2021-06-05 20:35:09,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:35:09,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:35:09,856 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:35:09,856 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:35:09,856 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [587056224] [2021-06-05 20:35:09,856 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [587056224] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:35:09,856 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:35:09,856 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 20:35:09,856 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1354176853] [2021-06-05 20:35:09,856 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 20:35:09,856 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:35:09,856 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 20:35:09,856 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:35:09,856 INFO L87 Difference]: Start difference. First operand 345 states and 793 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:35:09,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:35:09,990 INFO L93 Difference]: Finished difference Result 452 states and 1049 transitions. [2021-06-05 20:35:09,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 20:35:09,991 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:35:09,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:35:09,991 INFO L225 Difference]: With dead ends: 452 [2021-06-05 20:35:09,991 INFO L226 Difference]: Without dead ends: 346 [2021-06-05 20:35:09,991 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 48.4ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:35:09,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 346 states. [2021-06-05 20:35:09,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 346 to 341. [2021-06-05 20:35:09,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 341 states, 340 states have (on average 2.3058823529411763) internal successors, (784), 340 states have internal predecessors, (784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:35:09,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 341 states to 341 states and 784 transitions. [2021-06-05 20:35:09,994 INFO L78 Accepts]: Start accepts. Automaton has 341 states and 784 transitions. Word has length 26 [2021-06-05 20:35:09,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:35:09,994 INFO L482 AbstractCegarLoop]: Abstraction has 341 states and 784 transitions. [2021-06-05 20:35:09,994 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:35:09,994 INFO L276 IsEmpty]: Start isEmpty. Operand 341 states and 784 transitions. [2021-06-05 20:35:09,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:35:09,995 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:35:09,995 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:35:09,995 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable393 [2021-06-05 20:35:09,995 INFO L430 AbstractCegarLoop]: === Iteration 395 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:35:09,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:35:09,995 INFO L82 PathProgramCache]: Analyzing trace with hash -872977896, now seen corresponding path program 393 times [2021-06-05 20:35:09,995 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:35:09,995 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [739940993] [2021-06-05 20:35:09,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:35:09,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:35:10,057 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:35:10,057 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:35:10,057 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [739940993] [2021-06-05 20:35:10,057 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [739940993] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:35:10,057 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:35:10,057 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 20:35:10,057 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [230493394] [2021-06-05 20:35:10,058 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 20:35:10,058 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:35:10,058 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 20:35:10,058 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:35:10,058 INFO L87 Difference]: Start difference. First operand 341 states and 784 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:35:10,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:35:10,193 INFO L93 Difference]: Finished difference Result 448 states and 1039 transitions. [2021-06-05 20:35:10,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 20:35:10,194 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:35:10,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:35:10,194 INFO L225 Difference]: With dead ends: 448 [2021-06-05 20:35:10,194 INFO L226 Difference]: Without dead ends: 348 [2021-06-05 20:35:10,194 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 50.3ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:35:10,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 348 states. [2021-06-05 20:35:10,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 348 to 344. [2021-06-05 20:35:10,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 344 states, 343 states have (on average 2.2973760932944605) internal successors, (788), 343 states have internal predecessors, (788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:35:10,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 344 states to 344 states and 788 transitions. [2021-06-05 20:35:10,197 INFO L78 Accepts]: Start accepts. Automaton has 344 states and 788 transitions. Word has length 26 [2021-06-05 20:35:10,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:35:10,197 INFO L482 AbstractCegarLoop]: Abstraction has 344 states and 788 transitions. [2021-06-05 20:35:10,197 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:35:10,197 INFO L276 IsEmpty]: Start isEmpty. Operand 344 states and 788 transitions. [2021-06-05 20:35:10,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:35:10,198 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:35:10,198 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:35:10,198 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable394 [2021-06-05 20:35:10,198 INFO L430 AbstractCegarLoop]: === Iteration 396 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:35:10,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:35:10,198 INFO L82 PathProgramCache]: Analyzing trace with hash -480519240, now seen corresponding path program 394 times [2021-06-05 20:35:10,198 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:35:10,198 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [739987044] [2021-06-05 20:35:10,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:35:10,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:35:10,253 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:35:10,253 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:35:10,253 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [739987044] [2021-06-05 20:35:10,253 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [739987044] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:35:10,253 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:35:10,253 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 20:35:10,253 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850564614] [2021-06-05 20:35:10,253 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 20:35:10,253 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:35:10,253 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 20:35:10,253 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:35:10,254 INFO L87 Difference]: Start difference. First operand 344 states and 788 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:35:10,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:35:10,384 INFO L93 Difference]: Finished difference Result 453 states and 1051 transitions. [2021-06-05 20:35:10,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 20:35:10,385 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:35:10,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:35:10,385 INFO L225 Difference]: With dead ends: 453 [2021-06-05 20:35:10,385 INFO L226 Difference]: Without dead ends: 352 [2021-06-05 20:35:10,385 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 48.1ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:35:10,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 352 states. [2021-06-05 20:35:10,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 352 to 345. [2021-06-05 20:35:10,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 345 states, 344 states have (on average 2.2936046511627906) internal successors, (789), 344 states have internal predecessors, (789), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:35:10,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 345 states to 345 states and 789 transitions. [2021-06-05 20:35:10,388 INFO L78 Accepts]: Start accepts. Automaton has 345 states and 789 transitions. Word has length 26 [2021-06-05 20:35:10,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:35:10,388 INFO L482 AbstractCegarLoop]: Abstraction has 345 states and 789 transitions. [2021-06-05 20:35:10,388 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:35:10,388 INFO L276 IsEmpty]: Start isEmpty. Operand 345 states and 789 transitions. [2021-06-05 20:35:10,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:35:10,389 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:35:10,389 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:35:10,389 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable395 [2021-06-05 20:35:10,389 INFO L430 AbstractCegarLoop]: === Iteration 397 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:35:10,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:35:10,389 INFO L82 PathProgramCache]: Analyzing trace with hash -1985358058, now seen corresponding path program 395 times [2021-06-05 20:35:10,389 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:35:10,389 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1082637390] [2021-06-05 20:35:10,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:35:10,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:35:10,443 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:35:10,443 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:35:10,443 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1082637390] [2021-06-05 20:35:10,443 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1082637390] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:35:10,444 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:35:10,444 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 20:35:10,444 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1145967251] [2021-06-05 20:35:10,444 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 20:35:10,444 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:35:10,444 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 20:35:10,444 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:35:10,444 INFO L87 Difference]: Start difference. First operand 345 states and 789 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:35:10,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:35:10,578 INFO L93 Difference]: Finished difference Result 452 states and 1045 transitions. [2021-06-05 20:35:10,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 20:35:10,579 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:35:10,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:35:10,579 INFO L225 Difference]: With dead ends: 452 [2021-06-05 20:35:10,579 INFO L226 Difference]: Without dead ends: 349 [2021-06-05 20:35:10,579 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 48.0ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:35:10,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 349 states. [2021-06-05 20:35:10,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 349 to 346. [2021-06-05 20:35:10,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 346 states, 345 states have (on average 2.289855072463768) internal successors, (790), 345 states have internal predecessors, (790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:35:10,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 346 states to 346 states and 790 transitions. [2021-06-05 20:35:10,582 INFO L78 Accepts]: Start accepts. Automaton has 346 states and 790 transitions. Word has length 26 [2021-06-05 20:35:10,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:35:10,582 INFO L482 AbstractCegarLoop]: Abstraction has 346 states and 790 transitions. [2021-06-05 20:35:10,582 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:35:10,582 INFO L276 IsEmpty]: Start isEmpty. Operand 346 states and 790 transitions. [2021-06-05 20:35:10,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:35:10,583 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:35:10,583 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:35:10,583 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable396 [2021-06-05 20:35:10,583 INFO L430 AbstractCegarLoop]: === Iteration 398 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:35:10,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:35:10,583 INFO L82 PathProgramCache]: Analyzing trace with hash 639440250, now seen corresponding path program 396 times [2021-06-05 20:35:10,583 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:35:10,583 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1738712896] [2021-06-05 20:35:10,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:35:10,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:35:10,647 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:35:10,647 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:35:10,647 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1738712896] [2021-06-05 20:35:10,647 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1738712896] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:35:10,647 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:35:10,647 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 20:35:10,647 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1049421960] [2021-06-05 20:35:10,648 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 20:35:10,648 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:35:10,648 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 20:35:10,648 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:35:10,648 INFO L87 Difference]: Start difference. First operand 346 states and 790 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:35:10,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:35:10,789 INFO L93 Difference]: Finished difference Result 456 states and 1063 transitions. [2021-06-05 20:35:10,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 20:35:10,789 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:35:10,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:35:10,789 INFO L225 Difference]: With dead ends: 456 [2021-06-05 20:35:10,789 INFO L226 Difference]: Without dead ends: 358 [2021-06-05 20:35:10,789 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 47.7ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:35:10,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 358 states. [2021-06-05 20:35:10,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 358 to 351. [2021-06-05 20:35:10,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 351 states, 350 states have (on average 2.3) internal successors, (805), 350 states have internal predecessors, (805), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:35:10,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 351 states to 351 states and 805 transitions. [2021-06-05 20:35:10,793 INFO L78 Accepts]: Start accepts. Automaton has 351 states and 805 transitions. Word has length 26 [2021-06-05 20:35:10,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:35:10,793 INFO L482 AbstractCegarLoop]: Abstraction has 351 states and 805 transitions. [2021-06-05 20:35:10,793 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:35:10,793 INFO L276 IsEmpty]: Start isEmpty. Operand 351 states and 805 transitions. [2021-06-05 20:35:10,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:35:10,793 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:35:10,793 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:35:10,793 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable397 [2021-06-05 20:35:10,793 INFO L430 AbstractCegarLoop]: === Iteration 399 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:35:10,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:35:10,793 INFO L82 PathProgramCache]: Analyzing trace with hash -752704296, now seen corresponding path program 397 times [2021-06-05 20:35:10,793 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:35:10,793 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1300304484] [2021-06-05 20:35:10,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:35:10,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:35:10,865 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:35:10,865 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:35:10,865 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1300304484] [2021-06-05 20:35:10,865 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1300304484] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:35:10,865 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:35:10,865 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 20:35:10,865 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2021237401] [2021-06-05 20:35:10,865 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 20:35:10,865 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:35:10,865 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 20:35:10,865 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:35:10,866 INFO L87 Difference]: Start difference. First operand 351 states and 805 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:35:11,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:35:11,002 INFO L93 Difference]: Finished difference Result 456 states and 1056 transitions. [2021-06-05 20:35:11,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 20:35:11,002 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:35:11,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:35:11,002 INFO L225 Difference]: With dead ends: 456 [2021-06-05 20:35:11,002 INFO L226 Difference]: Without dead ends: 351 [2021-06-05 20:35:11,003 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 50.1ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:35:11,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 351 states. [2021-06-05 20:35:11,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 351 to 339. [2021-06-05 20:35:11,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 339 states, 338 states have (on average 2.298816568047337) internal successors, (777), 338 states have internal predecessors, (777), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:35:11,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 339 states to 339 states and 777 transitions. [2021-06-05 20:35:11,006 INFO L78 Accepts]: Start accepts. Automaton has 339 states and 777 transitions. Word has length 26 [2021-06-05 20:35:11,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:35:11,006 INFO L482 AbstractCegarLoop]: Abstraction has 339 states and 777 transitions. [2021-06-05 20:35:11,006 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:35:11,006 INFO L276 IsEmpty]: Start isEmpty. Operand 339 states and 777 transitions. [2021-06-05 20:35:11,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:35:11,006 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:35:11,006 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:35:11,006 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable398 [2021-06-05 20:35:11,006 INFO L430 AbstractCegarLoop]: === Iteration 400 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:35:11,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:35:11,006 INFO L82 PathProgramCache]: Analyzing trace with hash 1846084458, now seen corresponding path program 398 times [2021-06-05 20:35:11,006 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:35:11,006 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1946207129] [2021-06-05 20:35:11,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:35:11,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:35:11,060 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:35:11,060 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:35:11,061 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1946207129] [2021-06-05 20:35:11,061 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1946207129] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:35:11,061 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:35:11,061 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 20:35:11,061 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2050796701] [2021-06-05 20:35:11,061 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 20:35:11,061 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:35:11,061 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 20:35:11,061 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:35:11,061 INFO L87 Difference]: Start difference. First operand 339 states and 777 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:35:11,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:35:11,191 INFO L93 Difference]: Finished difference Result 462 states and 1071 transitions. [2021-06-05 20:35:11,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 20:35:11,192 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:35:11,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:35:11,192 INFO L225 Difference]: With dead ends: 462 [2021-06-05 20:35:11,192 INFO L226 Difference]: Without dead ends: 311 [2021-06-05 20:35:11,192 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 47.2ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:35:11,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 311 states. [2021-06-05 20:35:11,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 311 to 311. [2021-06-05 20:35:11,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 311 states, 310 states have (on average 2.274193548387097) internal successors, (705), 310 states have internal predecessors, (705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:35:11,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 311 states to 311 states and 705 transitions. [2021-06-05 20:35:11,195 INFO L78 Accepts]: Start accepts. Automaton has 311 states and 705 transitions. Word has length 26 [2021-06-05 20:35:11,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:35:11,195 INFO L482 AbstractCegarLoop]: Abstraction has 311 states and 705 transitions. [2021-06-05 20:35:11,195 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:35:11,195 INFO L276 IsEmpty]: Start isEmpty. Operand 311 states and 705 transitions. [2021-06-05 20:35:11,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:35:11,195 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:35:11,195 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:35:11,195 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable399 [2021-06-05 20:35:11,195 INFO L430 AbstractCegarLoop]: === Iteration 401 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:35:11,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:35:11,195 INFO L82 PathProgramCache]: Analyzing trace with hash 58627458, now seen corresponding path program 399 times [2021-06-05 20:35:11,196 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:35:11,196 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1895047880] [2021-06-05 20:35:11,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:35:11,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:35:11,258 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:35:11,258 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:35:11,258 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1895047880] [2021-06-05 20:35:11,258 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1895047880] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:35:11,258 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:35:11,259 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 20:35:11,259 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [43214098] [2021-06-05 20:35:11,259 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 20:35:11,259 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:35:11,259 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 20:35:11,259 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:35:11,259 INFO L87 Difference]: Start difference. First operand 311 states and 705 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:35:11,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:35:11,393 INFO L93 Difference]: Finished difference Result 447 states and 1032 transitions. [2021-06-05 20:35:11,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 20:35:11,393 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:35:11,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:35:11,393 INFO L225 Difference]: With dead ends: 447 [2021-06-05 20:35:11,393 INFO L226 Difference]: Without dead ends: 326 [2021-06-05 20:35:11,394 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 56.3ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:35:11,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 326 states. [2021-06-05 20:35:11,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 326 to 326. [2021-06-05 20:35:11,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 326 states, 325 states have (on average 2.252307692307692) internal successors, (732), 325 states have internal predecessors, (732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:35:11,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 326 states to 326 states and 732 transitions. [2021-06-05 20:35:11,396 INFO L78 Accepts]: Start accepts. Automaton has 326 states and 732 transitions. Word has length 26 [2021-06-05 20:35:11,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:35:11,397 INFO L482 AbstractCegarLoop]: Abstraction has 326 states and 732 transitions. [2021-06-05 20:35:11,397 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:35:11,397 INFO L276 IsEmpty]: Start isEmpty. Operand 326 states and 732 transitions. [2021-06-05 20:35:11,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:35:11,397 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:35:11,397 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:35:11,397 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable400 [2021-06-05 20:35:11,397 INFO L430 AbstractCegarLoop]: === Iteration 402 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:35:11,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:35:11,397 INFO L82 PathProgramCache]: Analyzing trace with hash -1510301084, now seen corresponding path program 400 times [2021-06-05 20:35:11,397 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:35:11,397 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1182436066] [2021-06-05 20:35:11,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:35:11,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:35:11,450 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:35:11,450 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:35:11,450 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1182436066] [2021-06-05 20:35:11,450 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1182436066] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:35:11,450 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:35:11,451 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 20:35:11,451 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [860867193] [2021-06-05 20:35:11,451 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 20:35:11,451 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:35:11,451 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 20:35:11,451 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:35:11,451 INFO L87 Difference]: Start difference. First operand 326 states and 732 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:35:11,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:35:11,574 INFO L93 Difference]: Finished difference Result 451 states and 1024 transitions. [2021-06-05 20:35:11,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 20:35:11,574 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:35:11,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:35:11,574 INFO L225 Difference]: With dead ends: 451 [2021-06-05 20:35:11,574 INFO L226 Difference]: Without dead ends: 322 [2021-06-05 20:35:11,574 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 46.6ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:35:11,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 322 states. [2021-06-05 20:35:11,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 322 to 314. [2021-06-05 20:35:11,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 314 states, 313 states have (on average 2.2396166134185305) internal successors, (701), 313 states have internal predecessors, (701), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:35:11,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 314 states to 314 states and 701 transitions. [2021-06-05 20:35:11,577 INFO L78 Accepts]: Start accepts. Automaton has 314 states and 701 transitions. Word has length 26 [2021-06-05 20:35:11,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:35:11,577 INFO L482 AbstractCegarLoop]: Abstraction has 314 states and 701 transitions. [2021-06-05 20:35:11,577 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:35:11,577 INFO L276 IsEmpty]: Start isEmpty. Operand 314 states and 701 transitions. [2021-06-05 20:35:11,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:35:11,578 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:35:11,578 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:35:11,578 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable401 [2021-06-05 20:35:11,578 INFO L430 AbstractCegarLoop]: === Iteration 403 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:35:11,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:35:11,578 INFO L82 PathProgramCache]: Analyzing trace with hash -1667639142, now seen corresponding path program 401 times [2021-06-05 20:35:11,578 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:35:11,578 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [216166387] [2021-06-05 20:35:11,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:35:11,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:35:11,631 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:35:11,631 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:35:11,631 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [216166387] [2021-06-05 20:35:11,631 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [216166387] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:35:11,631 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:35:11,631 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 20:35:11,631 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2032395001] [2021-06-05 20:35:11,631 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 20:35:11,632 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:35:11,632 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 20:35:11,632 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:35:11,632 INFO L87 Difference]: Start difference. First operand 314 states and 701 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:35:11,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:35:11,751 INFO L93 Difference]: Finished difference Result 411 states and 939 transitions. [2021-06-05 20:35:11,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 20:35:11,752 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:35:11,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:35:11,752 INFO L225 Difference]: With dead ends: 411 [2021-06-05 20:35:11,752 INFO L226 Difference]: Without dead ends: 282 [2021-06-05 20:35:11,752 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 47.0ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:35:11,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2021-06-05 20:35:11,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 273. [2021-06-05 20:35:11,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 273 states, 272 states have (on average 2.2426470588235294) internal successors, (610), 272 states have internal predecessors, (610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:35:11,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273 states to 273 states and 610 transitions. [2021-06-05 20:35:11,755 INFO L78 Accepts]: Start accepts. Automaton has 273 states and 610 transitions. Word has length 26 [2021-06-05 20:35:11,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:35:11,755 INFO L482 AbstractCegarLoop]: Abstraction has 273 states and 610 transitions. [2021-06-05 20:35:11,755 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:35:11,755 INFO L276 IsEmpty]: Start isEmpty. Operand 273 states and 610 transitions. [2021-06-05 20:35:11,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:35:11,755 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:35:11,755 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:35:11,755 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable402 [2021-06-05 20:35:11,755 INFO L430 AbstractCegarLoop]: === Iteration 404 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:35:11,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:35:11,755 INFO L82 PathProgramCache]: Analyzing trace with hash 1477860122, now seen corresponding path program 402 times [2021-06-05 20:35:11,755 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:35:11,755 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [708423028] [2021-06-05 20:35:11,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:35:11,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:35:11,809 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:35:11,810 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:35:11,810 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [708423028] [2021-06-05 20:35:11,810 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [708423028] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:35:11,810 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:35:11,810 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 20:35:11,810 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1320790443] [2021-06-05 20:35:11,810 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 20:35:11,810 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:35:11,810 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 20:35:11,810 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:35:11,810 INFO L87 Difference]: Start difference. First operand 273 states and 610 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:35:11,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:35:11,938 INFO L93 Difference]: Finished difference Result 364 states and 835 transitions. [2021-06-05 20:35:11,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 20:35:11,938 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:35:11,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:35:11,938 INFO L225 Difference]: With dead ends: 364 [2021-06-05 20:35:11,938 INFO L226 Difference]: Without dead ends: 253 [2021-06-05 20:35:11,938 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 47.8ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:35:11,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2021-06-05 20:35:11,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 244. [2021-06-05 20:35:11,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 244 states, 243 states have (on average 2.2757201646090537) internal successors, (553), 243 states have internal predecessors, (553), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:35:11,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 553 transitions. [2021-06-05 20:35:11,941 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 553 transitions. Word has length 26 [2021-06-05 20:35:11,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:35:11,941 INFO L482 AbstractCegarLoop]: Abstraction has 244 states and 553 transitions. [2021-06-05 20:35:11,941 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:35:11,941 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 553 transitions. [2021-06-05 20:35:11,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:35:11,941 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:35:11,941 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:35:11,941 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable403 [2021-06-05 20:35:11,941 INFO L430 AbstractCegarLoop]: === Iteration 405 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:35:11,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:35:11,941 INFO L82 PathProgramCache]: Analyzing trace with hash -26978696, now seen corresponding path program 403 times [2021-06-05 20:35:11,941 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:35:11,941 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1444051630] [2021-06-05 20:35:11,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:35:11,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:35:11,995 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:35:11,995 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:35:11,995 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1444051630] [2021-06-05 20:35:11,996 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1444051630] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:35:11,996 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:35:11,996 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 20:35:11,996 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746688341] [2021-06-05 20:35:11,996 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 20:35:11,996 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:35:11,996 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 20:35:11,996 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:35:11,996 INFO L87 Difference]: Start difference. First operand 244 states and 553 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:35:12,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:35:12,125 INFO L93 Difference]: Finished difference Result 350 states and 808 transitions. [2021-06-05 20:35:12,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 20:35:12,125 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:35:12,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:35:12,126 INFO L225 Difference]: With dead ends: 350 [2021-06-05 20:35:12,126 INFO L226 Difference]: Without dead ends: 250 [2021-06-05 20:35:12,126 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 47.8ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:35:12,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2021-06-05 20:35:12,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 244. [2021-06-05 20:35:12,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 244 states, 243 states have (on average 2.271604938271605) internal successors, (552), 243 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:35:12,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 552 transitions. [2021-06-05 20:35:12,128 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 552 transitions. Word has length 26 [2021-06-05 20:35:12,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:35:12,128 INFO L482 AbstractCegarLoop]: Abstraction has 244 states and 552 transitions. [2021-06-05 20:35:12,128 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:35:12,128 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 552 transitions. [2021-06-05 20:35:12,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:35:12,128 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:35:12,128 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:35:12,129 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable404 [2021-06-05 20:35:12,129 INFO L430 AbstractCegarLoop]: === Iteration 406 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:35:12,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:35:12,129 INFO L82 PathProgramCache]: Analyzing trace with hash -1697147684, now seen corresponding path program 404 times [2021-06-05 20:35:12,129 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:35:12,129 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1394225077] [2021-06-05 20:35:12,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:35:12,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:35:12,183 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:35:12,183 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:35:12,183 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1394225077] [2021-06-05 20:35:12,183 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1394225077] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:35:12,183 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:35:12,183 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 20:35:12,183 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1767131764] [2021-06-05 20:35:12,183 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 20:35:12,183 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:35:12,183 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 20:35:12,183 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:35:12,184 INFO L87 Difference]: Start difference. First operand 244 states and 552 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:35:12,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:35:12,314 INFO L93 Difference]: Finished difference Result 360 states and 826 transitions. [2021-06-05 20:35:12,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 20:35:12,314 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:35:12,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:35:12,314 INFO L225 Difference]: With dead ends: 360 [2021-06-05 20:35:12,315 INFO L226 Difference]: Without dead ends: 265 [2021-06-05 20:35:12,315 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 47.8ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:35:12,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265 states. [2021-06-05 20:35:12,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265 to 259. [2021-06-05 20:35:12,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 259 states, 258 states have (on average 2.244186046511628) internal successors, (579), 258 states have internal predecessors, (579), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:35:12,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 579 transitions. [2021-06-05 20:35:12,317 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 579 transitions. Word has length 26 [2021-06-05 20:35:12,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:35:12,317 INFO L482 AbstractCegarLoop]: Abstraction has 259 states and 579 transitions. [2021-06-05 20:35:12,317 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:35:12,317 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 579 transitions. [2021-06-05 20:35:12,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:35:12,317 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:35:12,317 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:35:12,317 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable405 [2021-06-05 20:35:12,317 INFO L430 AbstractCegarLoop]: === Iteration 407 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:35:12,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:35:12,318 INFO L82 PathProgramCache]: Analyzing trace with hash 1205675066, now seen corresponding path program 405 times [2021-06-05 20:35:12,318 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:35:12,318 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1560085928] [2021-06-05 20:35:12,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:35:12,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:35:12,374 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:35:12,375 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:35:12,375 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1560085928] [2021-06-05 20:35:12,375 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1560085928] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:35:12,375 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:35:12,375 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 20:35:12,375 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [532825467] [2021-06-05 20:35:12,375 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 20:35:12,375 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:35:12,375 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 20:35:12,375 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:35:12,375 INFO L87 Difference]: Start difference. First operand 259 states and 579 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:35:12,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:35:12,503 INFO L93 Difference]: Finished difference Result 368 states and 838 transitions. [2021-06-05 20:35:12,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 20:35:12,503 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:35:12,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:35:12,503 INFO L225 Difference]: With dead ends: 368 [2021-06-05 20:35:12,504 INFO L226 Difference]: Without dead ends: 268 [2021-06-05 20:35:12,504 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 50.6ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:35:12,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 268 states. [2021-06-05 20:35:12,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 268 to 257. [2021-06-05 20:35:12,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 257 states, 256 states have (on average 2.24609375) internal successors, (575), 256 states have internal predecessors, (575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:35:12,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 575 transitions. [2021-06-05 20:35:12,506 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 575 transitions. Word has length 26 [2021-06-05 20:35:12,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:35:12,506 INFO L482 AbstractCegarLoop]: Abstraction has 257 states and 575 transitions. [2021-06-05 20:35:12,506 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:35:12,506 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 575 transitions. [2021-06-05 20:35:12,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:35:12,506 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:35:12,506 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:35:12,506 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable406 [2021-06-05 20:35:12,507 INFO L430 AbstractCegarLoop]: === Iteration 408 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:35:12,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:35:12,507 INFO L82 PathProgramCache]: Analyzing trace with hash -1087756786, now seen corresponding path program 406 times [2021-06-05 20:35:12,507 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:35:12,507 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1457677846] [2021-06-05 20:35:12,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:35:12,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:35:12,562 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:35:12,562 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:35:12,562 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1457677846] [2021-06-05 20:35:12,562 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1457677846] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:35:12,562 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:35:12,562 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 20:35:12,562 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [631173394] [2021-06-05 20:35:12,562 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 20:35:12,562 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:35:12,562 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 20:35:12,562 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:35:12,562 INFO L87 Difference]: Start difference. First operand 257 states and 575 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:35:12,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:35:12,688 INFO L93 Difference]: Finished difference Result 366 states and 838 transitions. [2021-06-05 20:35:12,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 20:35:12,688 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:35:12,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:35:12,689 INFO L225 Difference]: With dead ends: 366 [2021-06-05 20:35:12,689 INFO L226 Difference]: Without dead ends: 247 [2021-06-05 20:35:12,689 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 48.7ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:35:12,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247 states. [2021-06-05 20:35:12,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247 to 247. [2021-06-05 20:35:12,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 247 states, 246 states have (on average 2.247967479674797) internal successors, (553), 246 states have internal predecessors, (553), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:35:12,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247 states to 247 states and 553 transitions. [2021-06-05 20:35:12,691 INFO L78 Accepts]: Start accepts. Automaton has 247 states and 553 transitions. Word has length 26 [2021-06-05 20:35:12,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:35:12,691 INFO L482 AbstractCegarLoop]: Abstraction has 247 states and 553 transitions. [2021-06-05 20:35:12,691 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:35:12,691 INFO L276 IsEmpty]: Start isEmpty. Operand 247 states and 553 transitions. [2021-06-05 20:35:12,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:35:12,691 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:35:12,691 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:35:12,691 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable407 [2021-06-05 20:35:12,691 INFO L430 AbstractCegarLoop]: === Iteration 409 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:35:12,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:35:12,692 INFO L82 PathProgramCache]: Analyzing trace with hash -703725496, now seen corresponding path program 407 times [2021-06-05 20:35:12,692 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:35:12,692 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [473646372] [2021-06-05 20:35:12,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:35:12,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:35:12,748 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:35:12,748 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:35:12,748 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [473646372] [2021-06-05 20:35:12,748 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [473646372] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:35:12,748 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:35:12,748 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 20:35:12,748 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [149726792] [2021-06-05 20:35:12,749 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 20:35:12,749 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:35:12,749 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 20:35:12,749 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:35:12,749 INFO L87 Difference]: Start difference. First operand 247 states and 553 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:35:12,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:35:12,868 INFO L93 Difference]: Finished difference Result 339 states and 779 transitions. [2021-06-05 20:35:12,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 20:35:12,868 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:35:12,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:35:12,869 INFO L225 Difference]: With dead ends: 339 [2021-06-05 20:35:12,869 INFO L226 Difference]: Without dead ends: 230 [2021-06-05 20:35:12,869 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 48.6ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:35:12,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2021-06-05 20:35:12,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 217. [2021-06-05 20:35:12,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 217 states, 216 states have (on average 2.2824074074074074) internal successors, (493), 216 states have internal predecessors, (493), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:35:12,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 493 transitions. [2021-06-05 20:35:12,871 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 493 transitions. Word has length 26 [2021-06-05 20:35:12,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:35:12,871 INFO L482 AbstractCegarLoop]: Abstraction has 217 states and 493 transitions. [2021-06-05 20:35:12,871 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:35:12,871 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 493 transitions. [2021-06-05 20:35:12,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:35:12,871 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:35:12,871 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:35:12,871 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable408 [2021-06-05 20:35:12,871 INFO L430 AbstractCegarLoop]: === Iteration 410 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:35:12,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:35:12,872 INFO L82 PathProgramCache]: Analyzing trace with hash -1474886448, now seen corresponding path program 408 times [2021-06-05 20:35:12,872 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:35:12,872 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1863112519] [2021-06-05 20:35:12,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:35:12,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:35:12,931 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:35:12,931 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:35:12,931 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1863112519] [2021-06-05 20:35:12,931 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1863112519] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:35:12,931 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:35:12,931 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 20:35:12,932 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [94791141] [2021-06-05 20:35:12,932 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 20:35:12,932 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:35:12,932 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 20:35:12,932 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:35:12,932 INFO L87 Difference]: Start difference. First operand 217 states and 493 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:35:13,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:35:13,055 INFO L93 Difference]: Finished difference Result 318 states and 736 transitions. [2021-06-05 20:35:13,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 20:35:13,056 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:35:13,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:35:13,056 INFO L225 Difference]: With dead ends: 318 [2021-06-05 20:35:13,056 INFO L226 Difference]: Without dead ends: 213 [2021-06-05 20:35:13,056 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 47.7ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:35:13,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2021-06-05 20:35:13,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 213. [2021-06-05 20:35:13,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 213 states, 212 states have (on average 2.2877358490566038) internal successors, (485), 212 states have internal predecessors, (485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:35:13,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 485 transitions. [2021-06-05 20:35:13,058 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 485 transitions. Word has length 26 [2021-06-05 20:35:13,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:35:13,058 INFO L482 AbstractCegarLoop]: Abstraction has 213 states and 485 transitions. [2021-06-05 20:35:13,058 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:35:13,058 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 485 transitions. [2021-06-05 20:35:13,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:35:13,058 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:35:13,058 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:35:13,059 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable409 [2021-06-05 20:35:13,059 INFO L430 AbstractCegarLoop]: === Iteration 411 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:35:13,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:35:13,059 INFO L82 PathProgramCache]: Analyzing trace with hash 1707700686, now seen corresponding path program 409 times [2021-06-05 20:35:13,059 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:35:13,059 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [363652587] [2021-06-05 20:35:13,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:35:13,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:35:13,104 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:35:13,104 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:35:13,104 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [363652587] [2021-06-05 20:35:13,104 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [363652587] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:35:13,105 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:35:13,105 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 20:35:13,105 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [220056142] [2021-06-05 20:35:13,105 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-05 20:35:13,105 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:35:13,105 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-05 20:35:13,105 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:35:13,105 INFO L87 Difference]: Start difference. First operand 213 states and 485 transitions. Second operand has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:35:13,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:35:13,201 INFO L93 Difference]: Finished difference Result 318 states and 737 transitions. [2021-06-05 20:35:13,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-05 20:35:13,202 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:35:13,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:35:13,202 INFO L225 Difference]: With dead ends: 318 [2021-06-05 20:35:13,202 INFO L226 Difference]: Without dead ends: 215 [2021-06-05 20:35:13,202 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 39.3ms TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-05 20:35:13,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2021-06-05 20:35:13,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 215. [2021-06-05 20:35:13,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 215 states, 214 states have (on average 2.2757009345794392) internal successors, (487), 214 states have internal predecessors, (487), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:35:13,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 487 transitions. [2021-06-05 20:35:13,204 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 487 transitions. Word has length 26 [2021-06-05 20:35:13,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:35:13,204 INFO L482 AbstractCegarLoop]: Abstraction has 215 states and 487 transitions. [2021-06-05 20:35:13,204 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:35:13,204 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 487 transitions. [2021-06-05 20:35:13,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:35:13,204 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:35:13,204 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:35:13,204 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable410 [2021-06-05 20:35:13,204 INFO L430 AbstractCegarLoop]: === Iteration 412 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:35:13,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:35:13,205 INFO L82 PathProgramCache]: Analyzing trace with hash 37531698, now seen corresponding path program 410 times [2021-06-05 20:35:13,205 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:35:13,205 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [64730088] [2021-06-05 20:35:13,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:35:13,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:35:13,259 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:35:13,259 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:35:13,259 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [64730088] [2021-06-05 20:35:13,259 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [64730088] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:35:13,259 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:35:13,259 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 20:35:13,259 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [748004154] [2021-06-05 20:35:13,259 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 20:35:13,259 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:35:13,260 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 20:35:13,260 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:35:13,260 INFO L87 Difference]: Start difference. First operand 215 states and 487 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:35:13,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:35:13,384 INFO L93 Difference]: Finished difference Result 325 states and 750 transitions. [2021-06-05 20:35:13,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 20:35:13,384 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:35:13,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:35:13,384 INFO L225 Difference]: With dead ends: 325 [2021-06-05 20:35:13,384 INFO L226 Difference]: Without dead ends: 227 [2021-06-05 20:35:13,385 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 48.2ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:35:13,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2021-06-05 20:35:13,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 220. [2021-06-05 20:35:13,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 220 states, 219 states have (on average 2.278538812785388) internal successors, (499), 219 states have internal predecessors, (499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:35:13,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 499 transitions. [2021-06-05 20:35:13,387 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 499 transitions. Word has length 26 [2021-06-05 20:35:13,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:35:13,387 INFO L482 AbstractCegarLoop]: Abstraction has 220 states and 499 transitions. [2021-06-05 20:35:13,387 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:35:13,387 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 499 transitions. [2021-06-05 20:35:13,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:35:13,387 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:35:13,387 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:35:13,387 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable411 [2021-06-05 20:35:13,387 INFO L430 AbstractCegarLoop]: === Iteration 413 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:35:13,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:35:13,387 INFO L82 PathProgramCache]: Analyzing trace with hash -1354612848, now seen corresponding path program 411 times [2021-06-05 20:35:13,387 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:35:13,387 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1604149418] [2021-06-05 20:35:13,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:35:13,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:35:13,442 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:35:13,442 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:35:13,442 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1604149418] [2021-06-05 20:35:13,442 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1604149418] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:35:13,442 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:35:13,442 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 20:35:13,442 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1720202485] [2021-06-05 20:35:13,442 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 20:35:13,442 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:35:13,442 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 20:35:13,442 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:35:13,442 INFO L87 Difference]: Start difference. First operand 220 states and 499 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:35:13,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:35:13,560 INFO L93 Difference]: Finished difference Result 331 states and 761 transitions. [2021-06-05 20:35:13,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 20:35:13,560 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:35:13,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:35:13,560 INFO L225 Difference]: With dead ends: 331 [2021-06-05 20:35:13,560 INFO L226 Difference]: Without dead ends: 220 [2021-06-05 20:35:13,560 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 48.1ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:35:13,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2021-06-05 20:35:13,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 218. [2021-06-05 20:35:13,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 218 states, 217 states have (on average 2.2672811059907834) internal successors, (492), 217 states have internal predecessors, (492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:35:13,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 492 transitions. [2021-06-05 20:35:13,564 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 492 transitions. Word has length 26 [2021-06-05 20:35:13,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:35:13,564 INFO L482 AbstractCegarLoop]: Abstraction has 218 states and 492 transitions. [2021-06-05 20:35:13,564 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:35:13,564 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 492 transitions. [2021-06-05 20:35:13,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:35:13,564 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:35:13,564 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:35:13,564 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable412 [2021-06-05 20:35:13,565 INFO L430 AbstractCegarLoop]: === Iteration 414 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:35:13,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:35:13,565 INFO L82 PathProgramCache]: Analyzing trace with hash -1023246392, now seen corresponding path program 412 times [2021-06-05 20:35:13,565 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:35:13,565 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [751836876] [2021-06-05 20:35:13,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:35:13,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:35:13,618 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:35:13,618 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:35:13,618 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [751836876] [2021-06-05 20:35:13,618 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [751836876] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:35:13,618 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:35:13,618 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 20:35:13,618 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [182622925] [2021-06-05 20:35:13,618 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 20:35:13,618 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:35:13,619 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 20:35:13,619 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:35:13,619 INFO L87 Difference]: Start difference. First operand 218 states and 492 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:35:13,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:35:13,732 INFO L93 Difference]: Finished difference Result 313 states and 725 transitions. [2021-06-05 20:35:13,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 20:35:13,733 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:35:13,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:35:13,733 INFO L225 Difference]: With dead ends: 313 [2021-06-05 20:35:13,733 INFO L226 Difference]: Without dead ends: 199 [2021-06-05 20:35:13,733 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 47.0ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:35:13,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2021-06-05 20:35:13,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 196. [2021-06-05 20:35:13,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 196 states, 195 states have (on average 2.312820512820513) internal successors, (451), 195 states have internal predecessors, (451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:35:13,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 451 transitions. [2021-06-05 20:35:13,735 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 451 transitions. Word has length 26 [2021-06-05 20:35:13,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:35:13,735 INFO L482 AbstractCegarLoop]: Abstraction has 196 states and 451 transitions. [2021-06-05 20:35:13,735 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:35:13,735 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 451 transitions. [2021-06-05 20:35:13,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:35:13,735 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:35:13,735 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:35:13,735 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable413 [2021-06-05 20:35:13,735 INFO L430 AbstractCegarLoop]: === Iteration 415 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:35:13,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:35:13,736 INFO L82 PathProgramCache]: Analyzing trace with hash 1170207830, now seen corresponding path program 413 times [2021-06-05 20:35:13,736 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:35:13,736 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [760379743] [2021-06-05 20:35:13,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:35:13,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:35:13,789 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:35:13,790 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:35:13,790 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [760379743] [2021-06-05 20:35:13,790 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [760379743] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:35:13,790 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:35:13,790 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 20:35:13,790 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1521231513] [2021-06-05 20:35:13,790 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 20:35:13,790 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:35:13,790 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 20:35:13,790 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:35:13,790 INFO L87 Difference]: Start difference. First operand 196 states and 451 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:35:13,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:35:13,902 INFO L93 Difference]: Finished difference Result 296 states and 693 transitions. [2021-06-05 20:35:13,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 20:35:13,903 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:35:13,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:35:13,903 INFO L225 Difference]: With dead ends: 296 [2021-06-05 20:35:13,903 INFO L226 Difference]: Without dead ends: 191 [2021-06-05 20:35:13,903 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 47.7ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:35:13,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2021-06-05 20:35:13,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 191. [2021-06-05 20:35:13,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 191 states, 190 states have (on average 2.3210526315789473) internal successors, (441), 190 states have internal predecessors, (441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:35:13,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 441 transitions. [2021-06-05 20:35:13,905 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 441 transitions. Word has length 26 [2021-06-05 20:35:13,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:35:13,905 INFO L482 AbstractCegarLoop]: Abstraction has 191 states and 441 transitions. [2021-06-05 20:35:13,905 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:35:13,905 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 441 transitions. [2021-06-05 20:35:13,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:35:13,905 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:35:13,905 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:35:13,905 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable414 [2021-06-05 20:35:13,905 INFO L430 AbstractCegarLoop]: === Iteration 416 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:35:13,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:35:13,906 INFO L82 PathProgramCache]: Analyzing trace with hash -499961158, now seen corresponding path program 414 times [2021-06-05 20:35:13,906 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:35:13,906 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1433225857] [2021-06-05 20:35:13,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:35:13,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:35:13,959 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:35:13,959 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:35:13,960 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1433225857] [2021-06-05 20:35:13,960 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1433225857] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:35:13,960 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:35:13,960 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 20:35:13,960 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [24390801] [2021-06-05 20:35:13,960 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 20:35:13,960 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:35:13,960 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 20:35:13,960 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:35:13,960 INFO L87 Difference]: Start difference. First operand 191 states and 441 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:35:14,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:35:14,076 INFO L93 Difference]: Finished difference Result 294 states and 685 transitions. [2021-06-05 20:35:14,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 20:35:14,077 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:35:14,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:35:14,077 INFO L225 Difference]: With dead ends: 294 [2021-06-05 20:35:14,077 INFO L226 Difference]: Without dead ends: 181 [2021-06-05 20:35:14,077 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 47.5ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:35:14,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2021-06-05 20:35:14,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 181. [2021-06-05 20:35:14,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 181 states, 180 states have (on average 2.3055555555555554) internal successors, (415), 180 states have internal predecessors, (415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:35:14,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 415 transitions. [2021-06-05 20:35:14,079 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 415 transitions. Word has length 26 [2021-06-05 20:35:14,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:35:14,079 INFO L482 AbstractCegarLoop]: Abstraction has 181 states and 415 transitions. [2021-06-05 20:35:14,079 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:35:14,079 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 415 transitions. [2021-06-05 20:35:14,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:35:14,079 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:35:14,079 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:35:14,079 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable415 [2021-06-05 20:35:14,079 INFO L430 AbstractCegarLoop]: === Iteration 417 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:35:14,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:35:14,079 INFO L82 PathProgramCache]: Analyzing trace with hash -1892105704, now seen corresponding path program 415 times [2021-06-05 20:35:14,079 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:35:14,080 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1130505400] [2021-06-05 20:35:14,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:35:14,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:35:14,145 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:35:14,145 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:35:14,145 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1130505400] [2021-06-05 20:35:14,145 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1130505400] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:35:14,145 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:35:14,145 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 20:35:14,145 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1440361620] [2021-06-05 20:35:14,145 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 20:35:14,145 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:35:14,146 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 20:35:14,146 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:35:14,146 INFO L87 Difference]: Start difference. First operand 181 states and 415 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:35:14,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:35:14,252 INFO L93 Difference]: Finished difference Result 282 states and 659 transitions. [2021-06-05 20:35:14,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 20:35:14,253 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:35:14,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:35:14,253 INFO L225 Difference]: With dead ends: 282 [2021-06-05 20:35:14,253 INFO L226 Difference]: Without dead ends: 179 [2021-06-05 20:35:14,253 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 57.0ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:35:14,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2021-06-05 20:35:14,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 179. [2021-06-05 20:35:14,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179 states, 178 states have (on average 2.308988764044944) internal successors, (411), 178 states have internal predecessors, (411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:35:14,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 411 transitions. [2021-06-05 20:35:14,255 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 411 transitions. Word has length 26 [2021-06-05 20:35:14,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:35:14,255 INFO L482 AbstractCegarLoop]: Abstraction has 179 states and 411 transitions. [2021-06-05 20:35:14,255 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:35:14,255 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 411 transitions. [2021-06-05 20:35:14,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 20:35:14,255 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:35:14,255 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:35:14,255 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable416 [2021-06-05 20:35:14,255 INFO L430 AbstractCegarLoop]: === Iteration 418 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 20:35:14,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:35:14,256 INFO L82 PathProgramCache]: Analyzing trace with hash 493461030, now seen corresponding path program 416 times [2021-06-05 20:35:14,256 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:35:14,256 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1600789441] [2021-06-05 20:35:14,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:35:14,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:35:14,319 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:35:14,319 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:35:14,319 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1600789441] [2021-06-05 20:35:14,319 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1600789441] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:35:14,319 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:35:14,319 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 20:35:14,319 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [414204949] [2021-06-05 20:35:14,319 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 20:35:14,319 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:35:14,320 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 20:35:14,320 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:35:14,320 INFO L87 Difference]: Start difference. First operand 179 states and 411 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:35:14,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:35:14,409 INFO L93 Difference]: Finished difference Result 178 states and 410 transitions. [2021-06-05 20:35:14,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 20:35:14,410 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 20:35:14,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:35:14,410 INFO L225 Difference]: With dead ends: 178 [2021-06-05 20:35:14,410 INFO L226 Difference]: Without dead ends: 0 [2021-06-05 20:35:14,410 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 50.8ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-05 20:35:14,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-06-05 20:35:14,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-06-05 20:35:14,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:35:14,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-06-05 20:35:14,410 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 26 [2021-06-05 20:35:14,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:35:14,410 INFO L482 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-06-05 20:35:14,410 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:35:14,411 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-06-05 20:35:14,411 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-06-05 20:35:14,411 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable417 [2021-06-05 20:35:14,412 INFO L247 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-06-05 20:35:14,414 INFO L202 PluginConnector]: Adding new model sum_invariant.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 05.06 08:35:14 BasicIcfg [2021-06-05 20:35:14,414 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-06-05 20:35:14,414 INFO L168 Benchmark]: Toolchain (without parser) took 95176.54 ms. Allocated memory was 362.8 MB in the beginning and 564.1 MB in the end (delta: 201.3 MB). Free memory was 342.9 MB in the beginning and 312.3 MB in the end (delta: 30.6 MB). Peak memory consumption was 233.2 MB. Max. memory is 16.0 GB. [2021-06-05 20:35:14,414 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.13 ms. Allocated memory is still 362.8 MB. Free memory was 344.0 MB in the beginning and 343.9 MB in the end (delta: 70.3 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-06-05 20:35:14,414 INFO L168 Benchmark]: Boogie Procedure Inliner took 20.69 ms. Allocated memory is still 362.8 MB. Free memory was 342.9 MB in the beginning and 341.4 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-06-05 20:35:14,415 INFO L168 Benchmark]: Boogie Preprocessor took 9.05 ms. Allocated memory is still 362.8 MB. Free memory was 341.4 MB in the beginning and 340.6 MB in the end (delta: 831.2 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-06-05 20:35:14,415 INFO L168 Benchmark]: RCFGBuilder took 152.84 ms. Allocated memory is still 362.8 MB. Free memory was 340.5 MB in the beginning and 331.6 MB in the end (delta: 8.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.0 GB. [2021-06-05 20:35:14,415 INFO L168 Benchmark]: TraceAbstraction took 94988.77 ms. Allocated memory was 362.8 MB in the beginning and 564.1 MB in the end (delta: 201.3 MB). Free memory was 331.1 MB in the beginning and 312.3 MB in the end (delta: 18.8 MB). Peak memory consumption was 220.6 MB. Max. memory is 16.0 GB. [2021-06-05 20:35:14,415 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Boogie PL CUP Parser took 0.13 ms. Allocated memory is still 362.8 MB. Free memory was 344.0 MB in the beginning and 343.9 MB in the end (delta: 70.3 kB). There was no memory consumed. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 20.69 ms. Allocated memory is still 362.8 MB. Free memory was 342.9 MB in the beginning and 341.4 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 9.05 ms. Allocated memory is still 362.8 MB. Free memory was 341.4 MB in the beginning and 340.6 MB in the end (delta: 831.2 kB). There was no memory consumed. Max. memory is 16.0 GB. * RCFGBuilder took 152.84 ms. Allocated memory is still 362.8 MB. Free memory was 340.5 MB in the beginning and 331.6 MB in the end (delta: 8.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.0 GB. * TraceAbstraction took 94988.77 ms. Allocated memory was 362.8 MB in the beginning and 564.1 MB in the end (delta: 201.3 MB). Free memory was 331.1 MB in the beginning and 312.3 MB in the end (delta: 18.8 MB). Peak memory consumption was 220.6 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 45]: assertion always holds For all program executions holds that assertion always holds at this location - StatisticsResult: Ultimate Automizer benchmark data for errors in thread instance: ULTIMATE.start with 1 thread instances CFG has 6 procedures, 42 locations, 5 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 94910.6ms, OverallIterations: 418, TraceHistogramMax: 1, EmptinessCheckTime: 471.4ms, AutomataDifference: 64276.6ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 150.1ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 33617 SDtfs, 21627 SDslu, 185475 SDs, 0 SdLazy, 149233 SolverSat, 3871 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 47037.1ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 3750 GetRequests, 109 SyntacticMatches, 416 SemanticMatches, 3225 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 19703.0ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=1624occurred in iteration=103, InterpolantAutomatonStates: 4061, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 5175.9ms AutomataMinimizationTime, 418 MinimizatonAttempts, 33805 StatesRemovedByMinimization, 402 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 103.1ms SsaConstructionTime, 349.4ms SatisfiabilityAnalysisTime, 23353.0ms InterpolantComputationTime, 10868 NumberOfCodeBlocks, 10868 NumberOfCodeBlocksAsserted, 418 NumberOfCheckSat, 10450 ConstructedInterpolants, 0 QuantifiedInterpolants, 86678 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 418 InterpolantComputations, 418 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! Received shutdown request...