/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-dev-770125f [2021-05-21 19:59:41,301 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-05-21 19:59:41,302 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-05-21 19:59:41,320 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-05-21 19:59:41,343 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 [2021-05-21 19:59:41,358 INFO L113 SettingsManager]: Loading preferences was successful [2021-05-21 19:59:41,358 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-05-21 19:59:41,358 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-05-21 19:59:41,358 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-05-21 19:59:41,359 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-05-21 19:59:41,359 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-05-21 19:59:41,359 INFO L138 SettingsManager]: * Use SBE=true [2021-05-21 19:59:41,359 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-05-21 19:59:41,359 INFO L138 SettingsManager]: * sizeof long=4 [2021-05-21 19:59:41,360 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-05-21 19:59:41,360 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-05-21 19:59:41,360 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-05-21 19:59:41,360 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-05-21 19:59:41,360 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-05-21 19:59:41,360 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-05-21 19:59:41,360 INFO L138 SettingsManager]: * sizeof long double=12 [2021-05-21 19:59:41,360 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-05-21 19:59:41,360 INFO L138 SettingsManager]: * Use constant arrays=true [2021-05-21 19:59:41,360 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-05-21 19:59:41,361 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-05-21 19:59:41,361 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-05-21 19:59:41,361 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-05-21 19:59:41,361 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-05-21 19:59:41,361 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-05-21 19:59:41,361 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-05-21 19:59:41,361 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-05-21 19:59:41,361 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-05-21 19:59:41,362 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-05-21 19:59:41,362 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-05-21 19:59:41,362 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-05-21 19:59:41,362 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-05-21 19:59:41,362 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-05-21 19:59:41,550 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-05-21 19:59:41,562 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-05-21 19:59:41,564 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-05-21 19:59:41,564 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-05-21 19:59:41,565 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-05-21 19:59:41,566 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/sum_invariant.bpl [2021-05-21 19:59:41,566 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/sum_invariant.bpl' [2021-05-21 19:59:41,590 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-05-21 19:59:41,591 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-05-21 19:59:41,592 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-05-21 19:59:41,592 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-05-21 19:59:41,592 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-05-21 19:59:41,599 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "sum_invariant.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 21.05 07:59:41" (1/1) ... [2021-05-21 19:59:41,603 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "sum_invariant.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 21.05 07:59:41" (1/1) ... [2021-05-21 19:59:41,608 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-05-21 19:59:41,609 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-05-21 19:59:41,609 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-05-21 19:59:41,610 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-05-21 19:59:41,615 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "sum_invariant.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 21.05 07:59:41" (1/1) ... [2021-05-21 19:59:41,615 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "sum_invariant.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 21.05 07:59:41" (1/1) ... [2021-05-21 19:59:41,615 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "sum_invariant.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 21.05 07:59:41" (1/1) ... [2021-05-21 19:59:41,615 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "sum_invariant.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 21.05 07:59:41" (1/1) ... [2021-05-21 19:59:41,617 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "sum_invariant.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 21.05 07:59:41" (1/1) ... [2021-05-21 19:59:41,617 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "sum_invariant.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 21.05 07:59:41" (1/1) ... [2021-05-21 19:59:41,617 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "sum_invariant.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 21.05 07:59:41" (1/1) ... [2021-05-21 19:59:41,618 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-05-21 19:59:41,618 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-05-21 19:59:41,618 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-05-21 19:59:41,619 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-05-21 19:59:41,620 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "sum_invariant.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 21.05 07:59:41" (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 [2021-05-21 19:59:41,675 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-05-21 19:59:41,676 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-05-21 19:59:41,676 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-05-21 19:59:41,676 INFO L124 BoogieDeclarations]: Specification and implementation of procedure Thread given in one single declaration [2021-05-21 19:59:41,676 INFO L130 BoogieDeclarations]: Found specification of procedure Thread [2021-05-21 19:59:41,677 INFO L138 BoogieDeclarations]: Found implementation of procedure Thread [2021-05-21 19:59:41,677 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-05-21 19:59:41,780 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-05-21 19:59:41,780 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-05-21 19:59:41,782 INFO L202 PluginConnector]: Adding new model sum_invariant.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.05 07:59:41 BoogieIcfgContainer [2021-05-21 19:59:41,782 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-05-21 19:59:41,784 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-05-21 19:59:41,785 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-05-21 19:59:41,786 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-05-21 19:59:41,787 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "sum_invariant.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 21.05 07:59:41" (1/2) ... [2021-05-21 19:59:41,791 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6436fc31 and model type sum_invariant.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.05 07:59:41, skipping insertion in model container [2021-05-21 19:59:41,791 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "sum_invariant.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.05 07:59:41" (2/2) ... [2021-05-21 19:59:41,793 INFO L111 eAbstractionObserver]: Analyzing ICFG sum_invariant.bpl [2021-05-21 19:59:41,799 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-05-21 19:59:41,799 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-05-21 19:59:41,799 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-05-21 19:59:41,800 INFO L478 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-05-21 19:59:41,829 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork1_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 19:59:41,829 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork1_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 19:59:41,830 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork1_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 19:59:41,830 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork1_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 19:59:41,831 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork1_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 19:59:41,831 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork1_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 19:59:41,833 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 19:59:41,833 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 19:59:41,833 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 19:59:41,833 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 19:59:41,834 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 19:59:41,834 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 19:59:41,836 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork3_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 19:59:41,836 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork3_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 19:59:41,837 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork3_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 19:59:41,837 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork3_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 19:59:41,837 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork3_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 19:59:41,838 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork3_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 19:59:41,838 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork2_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 19:59:41,838 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork2_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 19:59:41,839 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork2_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 19:59:41,839 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork2_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 19:59:41,839 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork2_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 19:59:41,839 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork2_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 19:59:41,841 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 19:59:41,865 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork1_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 19:59:41,867 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork2_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 19:59:41,869 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork3_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 19:59:41,911 INFO L149 ThreadInstanceAdder]: Constructed 16 joinOtherThreadTransitions. [2021-05-21 19:59:41,924 INFO L255 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2021-05-21 19:59:41,962 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-05-21 19:59:41,962 INFO L379 AbstractCegarLoop]: Hoare is false [2021-05-21 19:59:41,962 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-05-21 19:59:41,962 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-05-21 19:59:41,962 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-05-21 19:59:41,962 INFO L383 AbstractCegarLoop]: Difference is false [2021-05-21 19:59:41,962 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-05-21 19:59:41,962 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-05-21 19:59:41,986 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 45 places, 44 transitions, 156 flow [2021-05-21 19:59:42,061 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) [2021-05-21 19:59:42,064 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) [2021-05-21 19:59:42,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 19:59:42,078 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 19:59:42,078 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 19:59:42,079 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 19:59:42,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 19:59:42,082 INFO L82 PathProgramCache]: Analyzing trace with hash 376061866, now seen corresponding path program 1 times [2021-05-21 19:59:42,088 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 19:59:42,088 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1103476471] [2021-05-21 19:59:42,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 19:59:42,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 19:59:42,204 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 19:59:42,204 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 19:59:42,205 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1103476471] [2021-05-21 19:59:42,205 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1103476471] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 19:59:42,206 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 19:59:42,206 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-05-21 19:59:42,206 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [265415602] [2021-05-21 19:59:42,209 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-05-21 19:59:42,209 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 19:59:42,220 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-05-21 19:59:42,221 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-21 19:59:42,225 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) [2021-05-21 19:59:42,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 19:59:42,266 INFO L93 Difference]: Finished difference Result 1331 states and 4324 transitions. [2021-05-21 19:59:42,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-05-21 19:59:42,268 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 [2021-05-21 19:59:42,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 19:59:42,291 INFO L225 Difference]: With dead ends: 1331 [2021-05-21 19:59:42,291 INFO L226 Difference]: Without dead ends: 1329 [2021-05-21 19:59:42,294 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 11.0ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-21 19:59:42,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1329 states. [2021-05-21 19:59:42,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1329 to 1329. [2021-05-21 19:59:42,387 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) [2021-05-21 19:59:42,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1329 states to 1329 states and 4322 transitions. [2021-05-21 19:59:42,394 INFO L78 Accepts]: Start accepts. Automaton has 1329 states and 4322 transitions. Word has length 26 [2021-05-21 19:59:42,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 19:59:42,395 INFO L482 AbstractCegarLoop]: Abstraction has 1329 states and 4322 transitions. [2021-05-21 19:59:42,395 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) [2021-05-21 19:59:42,395 INFO L276 IsEmpty]: Start isEmpty. Operand 1329 states and 4322 transitions. [2021-05-21 19:59:42,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 19:59:42,399 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 19:59:42,399 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 19:59:42,399 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-05-21 19:59:42,399 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 19:59:42,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 19:59:42,402 INFO L82 PathProgramCache]: Analyzing trace with hash 2093674476, now seen corresponding path program 1 times [2021-05-21 19:59:42,402 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 19:59:42,402 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1284978347] [2021-05-21 19:59:42,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 19:59:42,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 19:59:42,444 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 19:59:42,444 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 19:59:42,444 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1284978347] [2021-05-21 19:59:42,444 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1284978347] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 19:59:42,444 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 19:59:42,444 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-05-21 19:59:42,445 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [943797649] [2021-05-21 19:59:42,446 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-05-21 19:59:42,446 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 19:59:42,447 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-05-21 19:59:42,448 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-21 19:59:42,448 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) [2021-05-21 19:59:42,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 19:59:42,466 INFO L93 Difference]: Finished difference Result 1114 states and 3592 transitions. [2021-05-21 19:59:42,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-05-21 19:59:42,467 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 [2021-05-21 19:59:42,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 19:59:42,471 INFO L225 Difference]: With dead ends: 1114 [2021-05-21 19:59:42,472 INFO L226 Difference]: Without dead ends: 1114 [2021-05-21 19:59:42,473 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.8ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-21 19:59:42,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1114 states. [2021-05-21 19:59:42,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1114 to 1114. [2021-05-21 19:59:42,497 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) [2021-05-21 19:59:42,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1114 states to 1114 states and 3592 transitions. [2021-05-21 19:59:42,500 INFO L78 Accepts]: Start accepts. Automaton has 1114 states and 3592 transitions. Word has length 26 [2021-05-21 19:59:42,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 19:59:42,501 INFO L482 AbstractCegarLoop]: Abstraction has 1114 states and 3592 transitions. [2021-05-21 19:59:42,501 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) [2021-05-21 19:59:42,501 INFO L276 IsEmpty]: Start isEmpty. Operand 1114 states and 3592 transitions. [2021-05-21 19:59:42,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 19:59:42,503 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 19:59:42,504 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 19:59:42,504 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-05-21 19:59:42,504 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 19:59:42,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 19:59:42,505 INFO L82 PathProgramCache]: Analyzing trace with hash -1885399720, now seen corresponding path program 1 times [2021-05-21 19:59:42,507 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 19:59:42,508 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1651086196] [2021-05-21 19:59:42,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 19:59:42,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 19:59:42,594 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 19:59:42,595 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 19:59:42,595 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1651086196] [2021-05-21 19:59:42,595 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1651086196] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 19:59:42,595 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 19:59:42,595 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-05-21 19:59:42,595 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2060828748] [2021-05-21 19:59:42,596 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-05-21 19:59:42,596 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 19:59:42,596 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-05-21 19:59:42,596 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-05-21 19:59:42,596 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) [2021-05-21 19:59:42,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 19:59:42,708 INFO L93 Difference]: Finished difference Result 1876 states and 5924 transitions. [2021-05-21 19:59:42,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-05-21 19:59:42,709 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 [2021-05-21 19:59:42,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 19:59:42,715 INFO L225 Difference]: With dead ends: 1876 [2021-05-21 19:59:42,715 INFO L226 Difference]: Without dead ends: 1614 [2021-05-21 19:59:42,716 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 34.3ms TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-05-21 19:59:42,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1614 states. [2021-05-21 19:59:42,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1614 to 1614. [2021-05-21 19:59:42,743 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) [2021-05-21 19:59:42,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1614 states to 1614 states and 5058 transitions. [2021-05-21 19:59:42,747 INFO L78 Accepts]: Start accepts. Automaton has 1614 states and 5058 transitions. Word has length 26 [2021-05-21 19:59:42,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 19:59:42,747 INFO L482 AbstractCegarLoop]: Abstraction has 1614 states and 5058 transitions. [2021-05-21 19:59:42,747 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) [2021-05-21 19:59:42,747 INFO L276 IsEmpty]: Start isEmpty. Operand 1614 states and 5058 transitions. [2021-05-21 19:59:42,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 19:59:42,750 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 19:59:42,750 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 19:59:42,750 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-05-21 19:59:42,750 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 19:59:42,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 19:59:42,751 INFO L82 PathProgramCache]: Analyzing trace with hash 1549982582, now seen corresponding path program 2 times [2021-05-21 19:59:42,751 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 19:59:42,751 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1901702297] [2021-05-21 19:59:42,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 19:59:42,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 19:59:42,820 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 19:59:42,820 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 19:59:42,820 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1901702297] [2021-05-21 19:59:42,820 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1901702297] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 19:59:42,820 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 19:59:42,820 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-05-21 19:59:42,821 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1809299564] [2021-05-21 19:59:42,821 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 19:59:42,821 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 19:59:42,821 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 19:59:42,821 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-05-21 19:59:42,821 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) [2021-05-21 19:59:42,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 19:59:42,952 INFO L93 Difference]: Finished difference Result 1887 states and 5832 transitions. [2021-05-21 19:59:42,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 19:59:42,952 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 [2021-05-21 19:59:42,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 19:59:42,959 INFO L225 Difference]: With dead ends: 1887 [2021-05-21 19:59:42,960 INFO L226 Difference]: Without dead ends: 1628 [2021-05-21 19:59:42,960 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 35.5ms TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-05-21 19:59:42,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1628 states. [2021-05-21 19:59:42,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1628 to 1508. [2021-05-21 19:59:42,988 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) [2021-05-21 19:59:42,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1508 states to 1508 states and 4726 transitions. [2021-05-21 19:59:42,994 INFO L78 Accepts]: Start accepts. Automaton has 1508 states and 4726 transitions. Word has length 26 [2021-05-21 19:59:42,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 19:59:42,994 INFO L482 AbstractCegarLoop]: Abstraction has 1508 states and 4726 transitions. [2021-05-21 19:59:42,994 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) [2021-05-21 19:59:42,994 INFO L276 IsEmpty]: Start isEmpty. Operand 1508 states and 4726 transitions. [2021-05-21 19:59:42,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 19:59:42,997 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 19:59:42,997 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 19:59:42,997 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-05-21 19:59:42,997 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 19:59:42,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 19:59:42,998 INFO L82 PathProgramCache]: Analyzing trace with hash -1650467594, now seen corresponding path program 3 times [2021-05-21 19:59:42,998 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 19:59:42,998 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [598780626] [2021-05-21 19:59:42,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 19:59:43,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 19:59:43,065 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 19:59:43,065 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 19:59:43,065 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [598780626] [2021-05-21 19:59:43,065 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [598780626] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 19:59:43,065 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 19:59:43,066 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-05-21 19:59:43,066 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [858691335] [2021-05-21 19:59:43,066 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 19:59:43,066 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 19:59:43,066 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 19:59:43,066 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-05-21 19:59:43,067 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) [2021-05-21 19:59:43,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 19:59:43,202 INFO L93 Difference]: Finished difference Result 1901 states and 5814 transitions. [2021-05-21 19:59:43,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 19:59:43,202 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 [2021-05-21 19:59:43,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 19:59:43,208 INFO L225 Difference]: With dead ends: 1901 [2021-05-21 19:59:43,208 INFO L226 Difference]: Without dead ends: 1646 [2021-05-21 19:59:43,208 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 35.6ms TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-05-21 19:59:43,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1646 states. [2021-05-21 19:59:43,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1646 to 1458. [2021-05-21 19:59:43,236 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) [2021-05-21 19:59:43,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1458 states to 1458 states and 4554 transitions. [2021-05-21 19:59:43,240 INFO L78 Accepts]: Start accepts. Automaton has 1458 states and 4554 transitions. Word has length 26 [2021-05-21 19:59:43,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 19:59:43,240 INFO L482 AbstractCegarLoop]: Abstraction has 1458 states and 4554 transitions. [2021-05-21 19:59:43,240 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) [2021-05-21 19:59:43,240 INFO L276 IsEmpty]: Start isEmpty. Operand 1458 states and 4554 transitions. [2021-05-21 19:59:43,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 19:59:43,243 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 19:59:43,243 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 19:59:43,243 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-05-21 19:59:43,244 INFO L430 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 19:59:43,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 19:59:43,244 INFO L82 PathProgramCache]: Analyzing trace with hash 1784914708, now seen corresponding path program 4 times [2021-05-21 19:59:43,244 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 19:59:43,245 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1887374380] [2021-05-21 19:59:43,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 19:59:43,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 19:59:43,345 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 19:59:43,346 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 19:59:43,346 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1887374380] [2021-05-21 19:59:43,346 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1887374380] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 19:59:43,346 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 19:59:43,346 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 19:59:43,346 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1370625992] [2021-05-21 19:59:43,346 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-21 19:59:43,346 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 19:59:43,347 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-21 19:59:43,347 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-05-21 19:59:43,347 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) [2021-05-21 19:59:43,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 19:59:43,483 INFO L93 Difference]: Finished difference Result 1678 states and 5178 transitions. [2021-05-21 19:59:43,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-21 19:59:43,484 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 [2021-05-21 19:59:43,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 19:59:43,491 INFO L225 Difference]: With dead ends: 1678 [2021-05-21 19:59:43,491 INFO L226 Difference]: Without dead ends: 1484 [2021-05-21 19:59:43,491 INFO L777 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 [2021-05-21 19:59:43,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1484 states. [2021-05-21 19:59:43,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1484 to 1406. [2021-05-21 19:59:43,513 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) [2021-05-21 19:59:43,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1406 states to 1406 states and 4398 transitions. [2021-05-21 19:59:43,517 INFO L78 Accepts]: Start accepts. Automaton has 1406 states and 4398 transitions. Word has length 26 [2021-05-21 19:59:43,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 19:59:43,517 INFO L482 AbstractCegarLoop]: Abstraction has 1406 states and 4398 transitions. [2021-05-21 19:59:43,517 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) [2021-05-21 19:59:43,517 INFO L276 IsEmpty]: Start isEmpty. Operand 1406 states and 4398 transitions. [2021-05-21 19:59:43,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 19:59:43,519 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 19:59:43,519 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 19:59:43,519 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-05-21 19:59:43,520 INFO L430 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 19:59:43,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 19:59:43,520 INFO L82 PathProgramCache]: Analyzing trace with hash -1096030702, now seen corresponding path program 5 times [2021-05-21 19:59:43,520 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 19:59:43,520 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2067673883] [2021-05-21 19:59:43,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 19:59:43,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 19:59:43,577 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 19:59:43,577 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 19:59:43,577 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2067673883] [2021-05-21 19:59:43,578 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2067673883] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 19:59:43,578 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 19:59:43,578 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-05-21 19:59:43,578 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2107367067] [2021-05-21 19:59:43,578 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 19:59:43,578 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 19:59:43,578 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 19:59:43,578 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-05-21 19:59:43,578 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) [2021-05-21 19:59:43,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 19:59:43,700 INFO L93 Difference]: Finished difference Result 1788 states and 5480 transitions. [2021-05-21 19:59:43,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 19:59:43,700 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 [2021-05-21 19:59:43,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 19:59:43,706 INFO L225 Difference]: With dead ends: 1788 [2021-05-21 19:59:43,706 INFO L226 Difference]: Without dead ends: 1647 [2021-05-21 19:59:43,706 INFO L777 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 [2021-05-21 19:59:43,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1647 states. [2021-05-21 19:59:43,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1647 to 1463. [2021-05-21 19:59:43,729 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) [2021-05-21 19:59:43,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1463 states to 1463 states and 4576 transitions. [2021-05-21 19:59:43,732 INFO L78 Accepts]: Start accepts. Automaton has 1463 states and 4576 transitions. Word has length 26 [2021-05-21 19:59:43,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 19:59:43,732 INFO L482 AbstractCegarLoop]: Abstraction has 1463 states and 4576 transitions. [2021-05-21 19:59:43,732 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) [2021-05-21 19:59:43,732 INFO L276 IsEmpty]: Start isEmpty. Operand 1463 states and 4576 transitions. [2021-05-21 19:59:43,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 19:59:43,735 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 19:59:43,735 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 19:59:43,735 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-05-21 19:59:43,735 INFO L430 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 19:59:43,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 19:59:43,735 INFO L82 PathProgramCache]: Analyzing trace with hash 662642804, now seen corresponding path program 6 times [2021-05-21 19:59:43,735 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 19:59:43,735 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1882941077] [2021-05-21 19:59:43,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 19:59:43,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 19:59:43,850 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 19:59:43,851 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 19:59:43,851 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1882941077] [2021-05-21 19:59:43,851 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1882941077] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 19:59:43,851 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 19:59:43,851 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 19:59:43,853 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [589628055] [2021-05-21 19:59:43,853 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-21 19:59:43,853 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 19:59:43,854 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-21 19:59:43,854 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-05-21 19:59:43,854 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) [2021-05-21 19:59:43,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 19:59:43,994 INFO L93 Difference]: Finished difference Result 1778 states and 5460 transitions. [2021-05-21 19:59:43,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-21 19:59:43,995 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 [2021-05-21 19:59:43,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 19:59:44,000 INFO L225 Difference]: With dead ends: 1778 [2021-05-21 19:59:44,000 INFO L226 Difference]: Without dead ends: 1649 [2021-05-21 19:59:44,001 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 42.4ms TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-05-21 19:59:44,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1649 states. [2021-05-21 19:59:44,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1649 to 1488. [2021-05-21 19:59:44,034 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) [2021-05-21 19:59:44,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1488 states to 1488 states and 4654 transitions. [2021-05-21 19:59:44,038 INFO L78 Accepts]: Start accepts. Automaton has 1488 states and 4654 transitions. Word has length 26 [2021-05-21 19:59:44,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 19:59:44,038 INFO L482 AbstractCegarLoop]: Abstraction has 1488 states and 4654 transitions. [2021-05-21 19:59:44,038 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) [2021-05-21 19:59:44,038 INFO L276 IsEmpty]: Start isEmpty. Operand 1488 states and 4654 transitions. [2021-05-21 19:59:44,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 19:59:44,041 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 19:59:44,041 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 19:59:44,041 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-05-21 19:59:44,041 INFO L430 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 19:59:44,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 19:59:44,042 INFO L82 PathProgramCache]: Analyzing trace with hash 1532087412, now seen corresponding path program 7 times [2021-05-21 19:59:44,042 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 19:59:44,042 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [207627337] [2021-05-21 19:59:44,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 19:59:44,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 19:59:44,134 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 19:59:44,135 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 19:59:44,135 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [207627337] [2021-05-21 19:59:44,135 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [207627337] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 19:59:44,135 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 19:59:44,135 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 19:59:44,135 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1695924370] [2021-05-21 19:59:44,136 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-21 19:59:44,136 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 19:59:44,136 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-21 19:59:44,136 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-05-21 19:59:44,137 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) [2021-05-21 19:59:44,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 19:59:44,271 INFO L93 Difference]: Finished difference Result 1806 states and 5565 transitions. [2021-05-21 19:59:44,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-21 19:59:44,272 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 [2021-05-21 19:59:44,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 19:59:44,279 INFO L225 Difference]: With dead ends: 1806 [2021-05-21 19:59:44,279 INFO L226 Difference]: Without dead ends: 1647 [2021-05-21 19:59:44,279 INFO L777 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 [2021-05-21 19:59:44,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1647 states. [2021-05-21 19:59:44,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1647 to 1509. [2021-05-21 19:59:44,303 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) [2021-05-21 19:59:44,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1509 states to 1509 states and 4715 transitions. [2021-05-21 19:59:44,306 INFO L78 Accepts]: Start accepts. Automaton has 1509 states and 4715 transitions. Word has length 26 [2021-05-21 19:59:44,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 19:59:44,307 INFO L482 AbstractCegarLoop]: Abstraction has 1509 states and 4715 transitions. [2021-05-21 19:59:44,307 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) [2021-05-21 19:59:44,307 INFO L276 IsEmpty]: Start isEmpty. Operand 1509 states and 4715 transitions. [2021-05-21 19:59:44,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 19:59:44,310 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 19:59:44,310 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 19:59:44,310 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-05-21 19:59:44,310 INFO L430 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 19:59:44,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 19:59:44,310 INFO L82 PathProgramCache]: Analyzing trace with hash 63376182, now seen corresponding path program 8 times [2021-05-21 19:59:44,310 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 19:59:44,310 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1719291759] [2021-05-21 19:59:44,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 19:59:44,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 19:59:44,391 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 19:59:44,393 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 19:59:44,393 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1719291759] [2021-05-21 19:59:44,393 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1719291759] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 19:59:44,393 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 19:59:44,393 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 19:59:44,393 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [816683573] [2021-05-21 19:59:44,394 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-21 19:59:44,394 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 19:59:44,395 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-21 19:59:44,395 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-05-21 19:59:44,395 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) [2021-05-21 19:59:44,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 19:59:44,538 INFO L93 Difference]: Finished difference Result 1852 states and 5672 transitions. [2021-05-21 19:59:44,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-21 19:59:44,538 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 [2021-05-21 19:59:44,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 19:59:44,556 INFO L225 Difference]: With dead ends: 1852 [2021-05-21 19:59:44,556 INFO L226 Difference]: Without dead ends: 1713 [2021-05-21 19:59:44,556 INFO L777 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 [2021-05-21 19:59:44,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1713 states. [2021-05-21 19:59:44,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1713 to 1499. [2021-05-21 19:59:44,580 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) [2021-05-21 19:59:44,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1499 states to 1499 states and 4685 transitions. [2021-05-21 19:59:44,586 INFO L78 Accepts]: Start accepts. Automaton has 1499 states and 4685 transitions. Word has length 26 [2021-05-21 19:59:44,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 19:59:44,586 INFO L482 AbstractCegarLoop]: Abstraction has 1499 states and 4685 transitions. [2021-05-21 19:59:44,586 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) [2021-05-21 19:59:44,586 INFO L276 IsEmpty]: Start isEmpty. Operand 1499 states and 4685 transitions. [2021-05-21 19:59:44,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 19:59:44,607 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 19:59:44,608 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 19:59:44,608 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-05-21 19:59:44,608 INFO L430 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 19:59:44,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 19:59:44,609 INFO L82 PathProgramCache]: Analyzing trace with hash 53973816, now seen corresponding path program 9 times [2021-05-21 19:59:44,609 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 19:59:44,609 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1406362638] [2021-05-21 19:59:44,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 19:59:44,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 19:59:44,683 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 19:59:44,683 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 19:59:44,683 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1406362638] [2021-05-21 19:59:44,683 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1406362638] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 19:59:44,683 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 19:59:44,683 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-05-21 19:59:44,684 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1935326841] [2021-05-21 19:59:44,684 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 19:59:44,684 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 19:59:44,688 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 19:59:44,688 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-05-21 19:59:44,688 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) [2021-05-21 19:59:44,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 19:59:44,801 INFO L93 Difference]: Finished difference Result 1849 states and 5664 transitions. [2021-05-21 19:59:44,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 19:59:44,802 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 [2021-05-21 19:59:44,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 19:59:44,806 INFO L225 Difference]: With dead ends: 1849 [2021-05-21 19:59:44,806 INFO L226 Difference]: Without dead ends: 1708 [2021-05-21 19:59:44,806 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 35.7ms TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-05-21 19:59:44,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1708 states. [2021-05-21 19:59:44,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1708 to 1525. [2021-05-21 19:59:44,834 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) [2021-05-21 19:59:44,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1525 states to 1525 states and 4765 transitions. [2021-05-21 19:59:44,838 INFO L78 Accepts]: Start accepts. Automaton has 1525 states and 4765 transitions. Word has length 26 [2021-05-21 19:59:44,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 19:59:44,838 INFO L482 AbstractCegarLoop]: Abstraction has 1525 states and 4765 transitions. [2021-05-21 19:59:44,838 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) [2021-05-21 19:59:44,838 INFO L276 IsEmpty]: Start isEmpty. Operand 1525 states and 4765 transitions. [2021-05-21 19:59:44,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 19:59:44,841 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 19:59:44,841 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 19:59:44,841 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-05-21 19:59:44,841 INFO L430 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 19:59:44,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 19:59:44,841 INFO L82 PathProgramCache]: Analyzing trace with hash 923418424, now seen corresponding path program 10 times [2021-05-21 19:59:44,842 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 19:59:44,842 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1994385226] [2021-05-21 19:59:44,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 19:59:44,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 19:59:44,916 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 19:59:44,917 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 19:59:44,917 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1994385226] [2021-05-21 19:59:44,917 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1994385226] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 19:59:44,917 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 19:59:44,917 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 19:59:44,917 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1516023991] [2021-05-21 19:59:44,917 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-21 19:59:44,917 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 19:59:44,918 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-21 19:59:44,918 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-05-21 19:59:44,918 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) [2021-05-21 19:59:45,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 19:59:45,056 INFO L93 Difference]: Finished difference Result 1932 states and 5906 transitions. [2021-05-21 19:59:45,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-21 19:59:45,056 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 [2021-05-21 19:59:45,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 19:59:45,059 INFO L225 Difference]: With dead ends: 1932 [2021-05-21 19:59:45,059 INFO L226 Difference]: Without dead ends: 1665 [2021-05-21 19:59:45,060 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 46.1ms TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-05-21 19:59:45,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1665 states. [2021-05-21 19:59:45,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1665 to 1415. [2021-05-21 19:59:45,083 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) [2021-05-21 19:59:45,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1415 states to 1415 states and 4371 transitions. [2021-05-21 19:59:45,086 INFO L78 Accepts]: Start accepts. Automaton has 1415 states and 4371 transitions. Word has length 26 [2021-05-21 19:59:45,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 19:59:45,086 INFO L482 AbstractCegarLoop]: Abstraction has 1415 states and 4371 transitions. [2021-05-21 19:59:45,087 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) [2021-05-21 19:59:45,087 INFO L276 IsEmpty]: Start isEmpty. Operand 1415 states and 4371 transitions. [2021-05-21 19:59:45,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 19:59:45,089 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 19:59:45,089 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 19:59:45,089 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-05-21 19:59:45,089 INFO L430 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 19:59:45,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 19:59:45,089 INFO L82 PathProgramCache]: Analyzing trace with hash -1663766954, now seen corresponding path program 11 times [2021-05-21 19:59:45,090 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 19:59:45,090 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [675071358] [2021-05-21 19:59:45,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 19:59:45,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 19:59:45,151 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 19:59:45,151 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 19:59:45,152 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [675071358] [2021-05-21 19:59:45,152 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [675071358] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 19:59:45,152 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 19:59:45,152 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 19:59:45,152 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [884914912] [2021-05-21 19:59:45,152 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-21 19:59:45,152 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 19:59:45,152 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-21 19:59:45,153 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-05-21 19:59:45,153 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) [2021-05-21 19:59:45,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 19:59:45,288 INFO L93 Difference]: Finished difference Result 1661 states and 5048 transitions. [2021-05-21 19:59:45,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-21 19:59:45,289 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 [2021-05-21 19:59:45,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 19:59:45,291 INFO L225 Difference]: With dead ends: 1661 [2021-05-21 19:59:45,292 INFO L226 Difference]: Without dead ends: 1528 [2021-05-21 19:59:45,292 INFO L777 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 [2021-05-21 19:59:45,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1528 states. [2021-05-21 19:59:45,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1528 to 1405. [2021-05-21 19:59:45,312 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) [2021-05-21 19:59:45,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1405 states to 1405 states and 4334 transitions. [2021-05-21 19:59:45,315 INFO L78 Accepts]: Start accepts. Automaton has 1405 states and 4334 transitions. Word has length 26 [2021-05-21 19:59:45,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 19:59:45,315 INFO L482 AbstractCegarLoop]: Abstraction has 1405 states and 4334 transitions. [2021-05-21 19:59:45,315 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) [2021-05-21 19:59:45,315 INFO L276 IsEmpty]: Start isEmpty. Operand 1405 states and 4334 transitions. [2021-05-21 19:59:45,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 19:59:45,317 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 19:59:45,317 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 19:59:45,317 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-05-21 19:59:45,318 INFO L430 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 19:59:45,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 19:59:45,318 INFO L82 PathProgramCache]: Analyzing trace with hash -794322346, now seen corresponding path program 12 times [2021-05-21 19:59:45,318 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 19:59:45,318 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [554244665] [2021-05-21 19:59:45,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 19:59:45,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 19:59:45,369 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 19:59:45,369 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 19:59:45,369 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [554244665] [2021-05-21 19:59:45,369 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [554244665] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 19:59:45,369 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 19:59:45,369 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 19:59:45,369 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1519137783] [2021-05-21 19:59:45,369 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-21 19:59:45,369 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 19:59:45,370 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-21 19:59:45,370 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-05-21 19:59:45,370 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) [2021-05-21 19:59:45,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 19:59:45,505 INFO L93 Difference]: Finished difference Result 1871 states and 5674 transitions. [2021-05-21 19:59:45,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-21 19:59:45,505 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 [2021-05-21 19:59:45,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 19:59:45,509 INFO L225 Difference]: With dead ends: 1871 [2021-05-21 19:59:45,509 INFO L226 Difference]: Without dead ends: 1726 [2021-05-21 19:59:45,509 INFO L777 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 [2021-05-21 19:59:45,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1726 states. [2021-05-21 19:59:45,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1726 to 1433. [2021-05-21 19:59:45,531 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) [2021-05-21 19:59:45,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1433 states to 1433 states and 4419 transitions. [2021-05-21 19:59:45,533 INFO L78 Accepts]: Start accepts. Automaton has 1433 states and 4419 transitions. Word has length 26 [2021-05-21 19:59:45,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 19:59:45,534 INFO L482 AbstractCegarLoop]: Abstraction has 1433 states and 4419 transitions. [2021-05-21 19:59:45,534 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) [2021-05-21 19:59:45,534 INFO L276 IsEmpty]: Start isEmpty. Operand 1433 states and 4419 transitions. [2021-05-21 19:59:45,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 19:59:45,536 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 19:59:45,536 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 19:59:45,536 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-05-21 19:59:45,536 INFO L430 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 19:59:45,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 19:59:45,537 INFO L82 PathProgramCache]: Analyzing trace with hash 2045087292, now seen corresponding path program 13 times [2021-05-21 19:59:45,537 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 19:59:45,537 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1825187425] [2021-05-21 19:59:45,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 19:59:45,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 19:59:45,587 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 19:59:45,587 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 19:59:45,587 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1825187425] [2021-05-21 19:59:45,587 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1825187425] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 19:59:45,587 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 19:59:45,587 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 19:59:45,587 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [963517833] [2021-05-21 19:59:45,588 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-21 19:59:45,588 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 19:59:45,588 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-21 19:59:45,588 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-05-21 19:59:45,588 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) [2021-05-21 19:59:45,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 19:59:45,726 INFO L93 Difference]: Finished difference Result 1746 states and 5285 transitions. [2021-05-21 19:59:45,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-21 19:59:45,727 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 [2021-05-21 19:59:45,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 19:59:45,730 INFO L225 Difference]: With dead ends: 1746 [2021-05-21 19:59:45,730 INFO L226 Difference]: Without dead ends: 1561 [2021-05-21 19:59:45,730 INFO L777 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 [2021-05-21 19:59:45,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1561 states. [2021-05-21 19:59:45,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1561 to 1389. [2021-05-21 19:59:45,751 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) [2021-05-21 19:59:45,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1389 states to 1389 states and 4285 transitions. [2021-05-21 19:59:45,753 INFO L78 Accepts]: Start accepts. Automaton has 1389 states and 4285 transitions. Word has length 26 [2021-05-21 19:59:45,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 19:59:45,753 INFO L482 AbstractCegarLoop]: Abstraction has 1389 states and 4285 transitions. [2021-05-21 19:59:45,754 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) [2021-05-21 19:59:45,754 INFO L276 IsEmpty]: Start isEmpty. Operand 1389 states and 4285 transitions. [2021-05-21 19:59:45,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 19:59:45,755 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 19:59:45,756 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 19:59:45,756 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-05-21 19:59:45,756 INFO L430 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 19:59:45,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 19:59:45,756 INFO L82 PathProgramCache]: Analyzing trace with hash 1140197304, now seen corresponding path program 14 times [2021-05-21 19:59:45,756 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 19:59:45,756 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [271212075] [2021-05-21 19:59:45,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 19:59:45,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 19:59:45,812 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 19:59:45,812 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 19:59:45,812 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [271212075] [2021-05-21 19:59:45,812 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [271212075] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 19:59:45,812 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 19:59:45,812 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 19:59:45,812 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [785180603] [2021-05-21 19:59:45,812 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-21 19:59:45,813 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 19:59:45,813 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-21 19:59:45,813 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-05-21 19:59:45,813 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) [2021-05-21 19:59:45,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 19:59:45,954 INFO L93 Difference]: Finished difference Result 1686 states and 5109 transitions. [2021-05-21 19:59:45,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-21 19:59:45,954 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 [2021-05-21 19:59:45,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 19:59:45,957 INFO L225 Difference]: With dead ends: 1686 [2021-05-21 19:59:45,957 INFO L226 Difference]: Without dead ends: 1511 [2021-05-21 19:59:45,957 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 40.5ms TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-05-21 19:59:45,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1511 states. [2021-05-21 19:59:45,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1511 to 1339. [2021-05-21 19:59:45,978 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) [2021-05-21 19:59:45,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1339 states to 1339 states and 4135 transitions. [2021-05-21 19:59:45,980 INFO L78 Accepts]: Start accepts. Automaton has 1339 states and 4135 transitions. Word has length 26 [2021-05-21 19:59:45,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 19:59:45,980 INFO L482 AbstractCegarLoop]: Abstraction has 1339 states and 4135 transitions. [2021-05-21 19:59:45,980 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) [2021-05-21 19:59:45,981 INFO L276 IsEmpty]: Start isEmpty. Operand 1339 states and 4135 transitions. [2021-05-21 19:59:45,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 19:59:45,982 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 19:59:45,982 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 19:59:45,982 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-05-21 19:59:45,982 INFO L430 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 19:59:45,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 19:59:45,983 INFO L82 PathProgramCache]: Analyzing trace with hash -1396096486, now seen corresponding path program 15 times [2021-05-21 19:59:45,983 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 19:59:45,983 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1690581269] [2021-05-21 19:59:45,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 19:59:45,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 19:59:46,035 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 19:59:46,035 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 19:59:46,035 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1690581269] [2021-05-21 19:59:46,035 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1690581269] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 19:59:46,035 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 19:59:46,036 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 19:59:46,036 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1838519764] [2021-05-21 19:59:46,036 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-21 19:59:46,036 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 19:59:46,036 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-21 19:59:46,036 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-05-21 19:59:46,036 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) [2021-05-21 19:59:46,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 19:59:46,158 INFO L93 Difference]: Finished difference Result 1627 states and 4941 transitions. [2021-05-21 19:59:46,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-21 19:59:46,159 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 [2021-05-21 19:59:46,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 19:59:46,161 INFO L225 Difference]: With dead ends: 1627 [2021-05-21 19:59:46,161 INFO L226 Difference]: Without dead ends: 1462 [2021-05-21 19:59:46,161 INFO L777 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 [2021-05-21 19:59:46,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1462 states. [2021-05-21 19:59:46,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1462 to 1322. [2021-05-21 19:59:46,180 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) [2021-05-21 19:59:46,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1322 states to 1322 states and 4086 transitions. [2021-05-21 19:59:46,182 INFO L78 Accepts]: Start accepts. Automaton has 1322 states and 4086 transitions. Word has length 26 [2021-05-21 19:59:46,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 19:59:46,182 INFO L482 AbstractCegarLoop]: Abstraction has 1322 states and 4086 transitions. [2021-05-21 19:59:46,182 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) [2021-05-21 19:59:46,182 INFO L276 IsEmpty]: Start isEmpty. Operand 1322 states and 4086 transitions. [2021-05-21 19:59:46,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 19:59:46,184 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 19:59:46,184 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 19:59:46,184 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-05-21 19:59:46,184 INFO L430 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 19:59:46,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 19:59:46,185 INFO L82 PathProgramCache]: Analyzing trace with hash -1995363108, now seen corresponding path program 16 times [2021-05-21 19:59:46,185 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 19:59:46,185 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1777435405] [2021-05-21 19:59:46,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 19:59:46,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 19:59:46,235 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 19:59:46,235 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 19:59:46,235 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1777435405] [2021-05-21 19:59:46,235 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1777435405] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 19:59:46,235 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 19:59:46,235 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 19:59:46,235 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1719689716] [2021-05-21 19:59:46,235 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-21 19:59:46,235 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 19:59:46,236 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-21 19:59:46,236 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-05-21 19:59:46,236 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) [2021-05-21 19:59:46,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 19:59:46,376 INFO L93 Difference]: Finished difference Result 1728 states and 5256 transitions. [2021-05-21 19:59:46,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-21 19:59:46,376 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 [2021-05-21 19:59:46,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 19:59:46,379 INFO L225 Difference]: With dead ends: 1728 [2021-05-21 19:59:46,379 INFO L226 Difference]: Without dead ends: 1573 [2021-05-21 19:59:46,379 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 38.0ms TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-05-21 19:59:46,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1573 states. [2021-05-21 19:59:46,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1573 to 1301. [2021-05-21 19:59:46,397 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) [2021-05-21 19:59:46,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1301 states to 1301 states and 4021 transitions. [2021-05-21 19:59:46,400 INFO L78 Accepts]: Start accepts. Automaton has 1301 states and 4021 transitions. Word has length 26 [2021-05-21 19:59:46,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 19:59:46,400 INFO L482 AbstractCegarLoop]: Abstraction has 1301 states and 4021 transitions. [2021-05-21 19:59:46,400 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) [2021-05-21 19:59:46,400 INFO L276 IsEmpty]: Start isEmpty. Operand 1301 states and 4021 transitions. [2021-05-21 19:59:46,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 19:59:46,402 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 19:59:46,402 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 19:59:46,402 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-05-21 19:59:46,402 INFO L430 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 19:59:46,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 19:59:46,402 INFO L82 PathProgramCache]: Analyzing trace with hash 1729596350, now seen corresponding path program 17 times [2021-05-21 19:59:46,402 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 19:59:46,402 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1074330363] [2021-05-21 19:59:46,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 19:59:46,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 19:59:46,452 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 19:59:46,452 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 19:59:46,452 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1074330363] [2021-05-21 19:59:46,452 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1074330363] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 19:59:46,452 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 19:59:46,452 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 19:59:46,452 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1731754666] [2021-05-21 19:59:46,452 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-21 19:59:46,453 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 19:59:46,453 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-21 19:59:46,453 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-05-21 19:59:46,453 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) [2021-05-21 19:59:46,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 19:59:46,579 INFO L93 Difference]: Finished difference Result 1527 states and 4646 transitions. [2021-05-21 19:59:46,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-21 19:59:46,580 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 [2021-05-21 19:59:46,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 19:59:46,582 INFO L225 Difference]: With dead ends: 1527 [2021-05-21 19:59:46,582 INFO L226 Difference]: Without dead ends: 1316 [2021-05-21 19:59:46,583 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 36.1ms TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-05-21 19:59:46,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1316 states. [2021-05-21 19:59:46,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1316 to 1138. [2021-05-21 19:59:46,618 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) [2021-05-21 19:59:46,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1138 states to 1138 states and 3549 transitions. [2021-05-21 19:59:46,620 INFO L78 Accepts]: Start accepts. Automaton has 1138 states and 3549 transitions. Word has length 26 [2021-05-21 19:59:46,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 19:59:46,620 INFO L482 AbstractCegarLoop]: Abstraction has 1138 states and 3549 transitions. [2021-05-21 19:59:46,620 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) [2021-05-21 19:59:46,620 INFO L276 IsEmpty]: Start isEmpty. Operand 1138 states and 3549 transitions. [2021-05-21 19:59:46,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 19:59:46,622 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 19:59:46,622 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 19:59:46,622 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-05-21 19:59:46,622 INFO L430 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 19:59:46,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 19:59:46,622 INFO L82 PathProgramCache]: Analyzing trace with hash 1402742104, now seen corresponding path program 18 times [2021-05-21 19:59:46,622 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 19:59:46,622 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1816682922] [2021-05-21 19:59:46,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 19:59:46,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 19:59:46,675 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 19:59:46,676 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 19:59:46,676 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1816682922] [2021-05-21 19:59:46,676 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1816682922] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 19:59:46,676 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 19:59:46,676 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-05-21 19:59:46,676 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [941501300] [2021-05-21 19:59:46,676 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 19:59:46,676 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 19:59:46,676 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 19:59:46,676 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-05-21 19:59:46,677 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) [2021-05-21 19:59:46,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 19:59:46,775 INFO L93 Difference]: Finished difference Result 1698 states and 5175 transitions. [2021-05-21 19:59:46,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 19:59:46,776 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 [2021-05-21 19:59:46,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 19:59:46,778 INFO L225 Difference]: With dead ends: 1698 [2021-05-21 19:59:46,778 INFO L226 Difference]: Without dead ends: 1446 [2021-05-21 19:59:46,778 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 36.2ms TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-05-21 19:59:46,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1446 states. [2021-05-21 19:59:46,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1446 to 1252. [2021-05-21 19:59:46,796 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) [2021-05-21 19:59:46,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1252 states to 1252 states and 3852 transitions. [2021-05-21 19:59:46,798 INFO L78 Accepts]: Start accepts. Automaton has 1252 states and 3852 transitions. Word has length 26 [2021-05-21 19:59:46,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 19:59:46,798 INFO L482 AbstractCegarLoop]: Abstraction has 1252 states and 3852 transitions. [2021-05-21 19:59:46,798 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) [2021-05-21 19:59:46,798 INFO L276 IsEmpty]: Start isEmpty. Operand 1252 states and 3852 transitions. [2021-05-21 19:59:46,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 19:59:46,799 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 19:59:46,800 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 19:59:46,800 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-05-21 19:59:46,800 INFO L430 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 19:59:46,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 19:59:46,800 INFO L82 PathProgramCache]: Analyzing trace with hash 543157110, now seen corresponding path program 19 times [2021-05-21 19:59:46,800 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 19:59:46,800 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1133731326] [2021-05-21 19:59:46,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 19:59:46,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 19:59:46,851 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 19:59:46,851 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 19:59:46,851 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1133731326] [2021-05-21 19:59:46,851 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1133731326] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 19:59:46,851 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 19:59:46,851 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 19:59:46,851 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [631712723] [2021-05-21 19:59:46,852 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-21 19:59:46,852 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 19:59:46,852 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-21 19:59:46,852 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-05-21 19:59:46,852 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) [2021-05-21 19:59:46,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 19:59:46,987 INFO L93 Difference]: Finished difference Result 1559 states and 4705 transitions. [2021-05-21 19:59:46,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-21 19:59:46,987 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 [2021-05-21 19:59:46,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 19:59:46,989 INFO L225 Difference]: With dead ends: 1559 [2021-05-21 19:59:46,989 INFO L226 Difference]: Without dead ends: 1310 [2021-05-21 19:59:46,989 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 37.5ms TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-05-21 19:59:46,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1310 states. [2021-05-21 19:59:47,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1310 to 1106. [2021-05-21 19:59:47,008 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) [2021-05-21 19:59:47,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1106 states to 1106 states and 3413 transitions. [2021-05-21 19:59:47,010 INFO L78 Accepts]: Start accepts. Automaton has 1106 states and 3413 transitions. Word has length 26 [2021-05-21 19:59:47,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 19:59:47,010 INFO L482 AbstractCegarLoop]: Abstraction has 1106 states and 3413 transitions. [2021-05-21 19:59:47,010 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) [2021-05-21 19:59:47,010 INFO L276 IsEmpty]: Start isEmpty. Operand 1106 states and 3413 transitions. [2021-05-21 19:59:47,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 19:59:47,012 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 19:59:47,012 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 19:59:47,012 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-05-21 19:59:47,012 INFO L430 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 19:59:47,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 19:59:47,013 INFO L82 PathProgramCache]: Analyzing trace with hash 1637674230, now seen corresponding path program 20 times [2021-05-21 19:59:47,013 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 19:59:47,013 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [823764511] [2021-05-21 19:59:47,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 19:59:47,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 19:59:47,069 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 19:59:47,069 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 19:59:47,069 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [823764511] [2021-05-21 19:59:47,069 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [823764511] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 19:59:47,069 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 19:59:47,069 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 19:59:47,069 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1984970554] [2021-05-21 19:59:47,069 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-21 19:59:47,069 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 19:59:47,070 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-21 19:59:47,070 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-05-21 19:59:47,070 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) [2021-05-21 19:59:47,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 19:59:47,188 INFO L93 Difference]: Finished difference Result 1455 states and 4380 transitions. [2021-05-21 19:59:47,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-21 19:59:47,189 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 [2021-05-21 19:59:47,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 19:59:47,191 INFO L225 Difference]: With dead ends: 1455 [2021-05-21 19:59:47,191 INFO L226 Difference]: Without dead ends: 1268 [2021-05-21 19:59:47,191 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 35.1ms TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-05-21 19:59:47,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1268 states. [2021-05-21 19:59:47,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1268 to 1116. [2021-05-21 19:59:47,206 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) [2021-05-21 19:59:47,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1116 states to 1116 states and 3431 transitions. [2021-05-21 19:59:47,207 INFO L78 Accepts]: Start accepts. Automaton has 1116 states and 3431 transitions. Word has length 26 [2021-05-21 19:59:47,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 19:59:47,208 INFO L482 AbstractCegarLoop]: Abstraction has 1116 states and 3431 transitions. [2021-05-21 19:59:47,208 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) [2021-05-21 19:59:47,208 INFO L276 IsEmpty]: Start isEmpty. Operand 1116 states and 3431 transitions. [2021-05-21 19:59:47,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 19:59:47,209 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 19:59:47,209 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 19:59:47,209 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-05-21 19:59:47,209 INFO L430 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 19:59:47,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 19:59:47,210 INFO L82 PathProgramCache]: Analyzing trace with hash 778089236, now seen corresponding path program 21 times [2021-05-21 19:59:47,210 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 19:59:47,210 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1985758027] [2021-05-21 19:59:47,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 19:59:47,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 19:59:47,278 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 19:59:47,278 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 19:59:47,278 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1985758027] [2021-05-21 19:59:47,278 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1985758027] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 19:59:47,278 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 19:59:47,278 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-21 19:59:47,278 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1313895899] [2021-05-21 19:59:47,279 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 19:59:47,279 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 19:59:47,279 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 19:59:47,279 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-05-21 19:59:47,279 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) [2021-05-21 19:59:47,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 19:59:47,433 INFO L93 Difference]: Finished difference Result 1381 states and 4160 transitions. [2021-05-21 19:59:47,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 19:59:47,434 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-05-21 19:59:47,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 19:59:47,436 INFO L225 Difference]: With dead ends: 1381 [2021-05-21 19:59:47,436 INFO L226 Difference]: Without dead ends: 1226 [2021-05-21 19:59:47,436 INFO L777 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 [2021-05-21 19:59:47,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1226 states. [2021-05-21 19:59:47,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1226 to 1090. [2021-05-21 19:59:47,450 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) [2021-05-21 19:59:47,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1090 states to 1090 states and 3365 transitions. [2021-05-21 19:59:47,452 INFO L78 Accepts]: Start accepts. Automaton has 1090 states and 3365 transitions. Word has length 26 [2021-05-21 19:59:47,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 19:59:47,452 INFO L482 AbstractCegarLoop]: Abstraction has 1090 states and 3365 transitions. [2021-05-21 19:59:47,452 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) [2021-05-21 19:59:47,452 INFO L276 IsEmpty]: Start isEmpty. Operand 1090 states and 3365 transitions. [2021-05-21 19:59:47,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 19:59:47,453 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 19:59:47,453 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 19:59:47,453 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-05-21 19:59:47,453 INFO L430 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 19:59:47,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 19:59:47,454 INFO L82 PathProgramCache]: Analyzing trace with hash -2102856174, now seen corresponding path program 22 times [2021-05-21 19:59:47,454 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 19:59:47,454 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2007772255] [2021-05-21 19:59:47,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 19:59:47,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 19:59:47,502 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 19:59:47,503 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 19:59:47,503 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2007772255] [2021-05-21 19:59:47,503 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2007772255] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 19:59:47,503 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 19:59:47,503 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 19:59:47,503 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [596307462] [2021-05-21 19:59:47,503 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-21 19:59:47,503 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 19:59:47,503 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-21 19:59:47,503 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-05-21 19:59:47,503 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) [2021-05-21 19:59:47,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 19:59:47,652 INFO L93 Difference]: Finished difference Result 1426 states and 4315 transitions. [2021-05-21 19:59:47,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-21 19:59:47,652 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 [2021-05-21 19:59:47,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 19:59:47,654 INFO L225 Difference]: With dead ends: 1426 [2021-05-21 19:59:47,654 INFO L226 Difference]: Without dead ends: 1303 [2021-05-21 19:59:47,654 INFO L777 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 [2021-05-21 19:59:47,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1303 states. [2021-05-21 19:59:47,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1303 to 1149. [2021-05-21 19:59:47,668 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) [2021-05-21 19:59:47,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1149 states to 1149 states and 3546 transitions. [2021-05-21 19:59:47,670 INFO L78 Accepts]: Start accepts. Automaton has 1149 states and 3546 transitions. Word has length 26 [2021-05-21 19:59:47,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 19:59:47,670 INFO L482 AbstractCegarLoop]: Abstraction has 1149 states and 3546 transitions. [2021-05-21 19:59:47,670 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) [2021-05-21 19:59:47,670 INFO L276 IsEmpty]: Start isEmpty. Operand 1149 states and 3546 transitions. [2021-05-21 19:59:47,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 19:59:47,671 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 19:59:47,672 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 19:59:47,672 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-05-21 19:59:47,672 INFO L430 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 19:59:47,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 19:59:47,672 INFO L82 PathProgramCache]: Analyzing trace with hash -344182668, now seen corresponding path program 23 times [2021-05-21 19:59:47,672 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 19:59:47,672 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1974090747] [2021-05-21 19:59:47,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 19:59:47,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 19:59:47,725 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 19:59:47,725 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 19:59:47,725 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1974090747] [2021-05-21 19:59:47,725 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1974090747] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 19:59:47,725 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 19:59:47,725 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-21 19:59:47,725 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1337365131] [2021-05-21 19:59:47,725 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 19:59:47,725 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 19:59:47,726 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 19:59:47,726 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-05-21 19:59:47,726 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) [2021-05-21 19:59:47,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 19:59:47,876 INFO L93 Difference]: Finished difference Result 1438 states and 4359 transitions. [2021-05-21 19:59:47,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 19:59:47,876 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-05-21 19:59:47,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 19:59:47,878 INFO L225 Difference]: With dead ends: 1438 [2021-05-21 19:59:47,878 INFO L226 Difference]: Without dead ends: 1327 [2021-05-21 19:59:47,878 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 42.1ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-05-21 19:59:47,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1327 states. [2021-05-21 19:59:47,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1327 to 1164. [2021-05-21 19:59:47,892 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) [2021-05-21 19:59:47,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1164 states to 1164 states and 3592 transitions. [2021-05-21 19:59:47,894 INFO L78 Accepts]: Start accepts. Automaton has 1164 states and 3592 transitions. Word has length 26 [2021-05-21 19:59:47,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 19:59:47,894 INFO L482 AbstractCegarLoop]: Abstraction has 1164 states and 3592 transitions. [2021-05-21 19:59:47,894 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 19:59:47,894 INFO L276 IsEmpty]: Start isEmpty. Operand 1164 states and 3592 transitions. [2021-05-21 19:59:47,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 19:59:47,896 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 19:59:47,896 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 19:59:47,896 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-05-21 19:59:47,896 INFO L430 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 19:59:47,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 19:59:47,896 INFO L82 PathProgramCache]: Analyzing trace with hash 525261940, now seen corresponding path program 24 times [2021-05-21 19:59:47,896 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 19:59:47,896 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [394218121] [2021-05-21 19:59:47,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 19:59:47,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 19:59:47,953 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 19:59:47,954 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 19:59:47,954 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [394218121] [2021-05-21 19:59:47,954 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [394218121] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 19:59:47,954 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 19:59:47,954 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-21 19:59:47,954 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1796200261] [2021-05-21 19:59:47,954 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 19:59:47,954 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 19:59:47,954 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 19:59:47,954 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-05-21 19:59:47,955 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) [2021-05-21 19:59:48,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 19:59:48,108 INFO L93 Difference]: Finished difference Result 1343 states and 4063 transitions. [2021-05-21 19:59:48,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 19:59:48,109 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 [2021-05-21 19:59:48,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 19:59:48,111 INFO L225 Difference]: With dead ends: 1343 [2021-05-21 19:59:48,111 INFO L226 Difference]: Without dead ends: 1209 [2021-05-21 19:59:48,111 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 43.6ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-05-21 19:59:48,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1209 states. [2021-05-21 19:59:48,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1209 to 1153. [2021-05-21 19:59:48,124 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) [2021-05-21 19:59:48,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1153 states to 1153 states and 3557 transitions. [2021-05-21 19:59:48,126 INFO L78 Accepts]: Start accepts. Automaton has 1153 states and 3557 transitions. Word has length 26 [2021-05-21 19:59:48,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 19:59:48,126 INFO L482 AbstractCegarLoop]: Abstraction has 1153 states and 3557 transitions. [2021-05-21 19:59:48,126 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 19:59:48,126 INFO L276 IsEmpty]: Start isEmpty. Operand 1153 states and 3557 transitions. [2021-05-21 19:59:48,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 19:59:48,127 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 19:59:48,128 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 19:59:48,128 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-05-21 19:59:48,128 INFO L430 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 19:59:48,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 19:59:48,128 INFO L82 PathProgramCache]: Analyzing trace with hash -943449290, now seen corresponding path program 25 times [2021-05-21 19:59:48,128 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 19:59:48,128 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1313549400] [2021-05-21 19:59:48,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 19:59:48,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 19:59:48,186 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 19:59:48,187 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 19:59:48,187 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1313549400] [2021-05-21 19:59:48,187 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1313549400] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 19:59:48,187 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 19:59:48,187 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-21 19:59:48,187 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [282980449] [2021-05-21 19:59:48,187 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 19:59:48,187 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 19:59:48,187 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 19:59:48,187 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-05-21 19:59:48,188 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) [2021-05-21 19:59:48,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 19:59:48,360 INFO L93 Difference]: Finished difference Result 1431 states and 4320 transitions. [2021-05-21 19:59:48,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 19:59:48,361 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-05-21 19:59:48,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 19:59:48,362 INFO L225 Difference]: With dead ends: 1431 [2021-05-21 19:59:48,363 INFO L226 Difference]: Without dead ends: 1310 [2021-05-21 19:59:48,363 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 42.4ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-05-21 19:59:48,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1310 states. [2021-05-21 19:59:48,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1310 to 1143. [2021-05-21 19:59:48,377 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) [2021-05-21 19:59:48,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1143 states to 1143 states and 3527 transitions. [2021-05-21 19:59:48,378 INFO L78 Accepts]: Start accepts. Automaton has 1143 states and 3527 transitions. Word has length 26 [2021-05-21 19:59:48,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 19:59:48,379 INFO L482 AbstractCegarLoop]: Abstraction has 1143 states and 3527 transitions. [2021-05-21 19:59:48,379 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 19:59:48,379 INFO L276 IsEmpty]: Start isEmpty. Operand 1143 states and 3527 transitions. [2021-05-21 19:59:48,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 19:59:48,380 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 19:59:48,380 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 19:59:48,380 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-05-21 19:59:48,380 INFO L430 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 19:59:48,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 19:59:48,381 INFO L82 PathProgramCache]: Analyzing trace with hash -952851656, now seen corresponding path program 26 times [2021-05-21 19:59:48,381 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 19:59:48,381 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [144242291] [2021-05-21 19:59:48,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 19:59:48,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 19:59:48,428 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 19:59:48,429 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 19:59:48,429 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [144242291] [2021-05-21 19:59:48,429 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [144242291] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 19:59:48,429 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 19:59:48,429 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 19:59:48,429 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [729317042] [2021-05-21 19:59:48,429 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-21 19:59:48,429 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 19:59:48,429 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-21 19:59:48,429 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-05-21 19:59:48,430 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) [2021-05-21 19:59:48,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 19:59:48,558 INFO L93 Difference]: Finished difference Result 1389 states and 4203 transitions. [2021-05-21 19:59:48,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-21 19:59:48,558 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 [2021-05-21 19:59:48,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 19:59:48,560 INFO L225 Difference]: With dead ends: 1389 [2021-05-21 19:59:48,560 INFO L226 Difference]: Without dead ends: 1278 [2021-05-21 19:59:48,560 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 37.6ms TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-05-21 19:59:48,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1278 states. [2021-05-21 19:59:48,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1278 to 1180. [2021-05-21 19:59:48,585 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) [2021-05-21 19:59:48,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1180 states to 1180 states and 3634 transitions. [2021-05-21 19:59:48,587 INFO L78 Accepts]: Start accepts. Automaton has 1180 states and 3634 transitions. Word has length 26 [2021-05-21 19:59:48,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 19:59:48,587 INFO L482 AbstractCegarLoop]: Abstraction has 1180 states and 3634 transitions. [2021-05-21 19:59:48,587 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) [2021-05-21 19:59:48,587 INFO L276 IsEmpty]: Start isEmpty. Operand 1180 states and 3634 transitions. [2021-05-21 19:59:48,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 19:59:48,589 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 19:59:48,589 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 19:59:48,589 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-05-21 19:59:48,589 INFO L430 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 19:59:48,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 19:59:48,589 INFO L82 PathProgramCache]: Analyzing trace with hash -83407048, now seen corresponding path program 27 times [2021-05-21 19:59:48,590 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 19:59:48,590 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [300269537] [2021-05-21 19:59:48,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 19:59:48,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 19:59:48,647 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 19:59:48,647 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 19:59:48,647 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [300269537] [2021-05-21 19:59:48,647 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [300269537] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 19:59:48,647 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 19:59:48,647 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-21 19:59:48,647 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1820736377] [2021-05-21 19:59:48,647 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 19:59:48,647 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 19:59:48,648 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 19:59:48,648 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-05-21 19:59:48,648 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) [2021-05-21 19:59:48,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 19:59:48,827 INFO L93 Difference]: Finished difference Result 1506 states and 4529 transitions. [2021-05-21 19:59:48,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 19:59:48,828 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-05-21 19:59:48,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 19:59:48,829 INFO L225 Difference]: With dead ends: 1506 [2021-05-21 19:59:48,829 INFO L226 Difference]: Without dead ends: 1281 [2021-05-21 19:59:48,830 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 46.2ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-05-21 19:59:48,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1281 states. [2021-05-21 19:59:48,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1281 to 1143. [2021-05-21 19:59:48,845 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) [2021-05-21 19:59:48,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1143 states to 1143 states and 3503 transitions. [2021-05-21 19:59:48,847 INFO L78 Accepts]: Start accepts. Automaton has 1143 states and 3503 transitions. Word has length 26 [2021-05-21 19:59:48,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 19:59:48,848 INFO L482 AbstractCegarLoop]: Abstraction has 1143 states and 3503 transitions. [2021-05-21 19:59:48,848 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) [2021-05-21 19:59:48,848 INFO L276 IsEmpty]: Start isEmpty. Operand 1143 states and 3503 transitions. [2021-05-21 19:59:48,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 19:59:48,850 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 19:59:48,850 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 19:59:48,850 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-05-21 19:59:48,850 INFO L430 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 19:59:48,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 19:59:48,850 INFO L82 PathProgramCache]: Analyzing trace with hash 1624374870, now seen corresponding path program 28 times [2021-05-21 19:59:48,850 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 19:59:48,850 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [630869535] [2021-05-21 19:59:48,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 19:59:48,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 19:59:48,918 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 19:59:48,918 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 19:59:48,918 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [630869535] [2021-05-21 19:59:48,918 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [630869535] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 19:59:48,918 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 19:59:48,918 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-21 19:59:48,918 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [890672305] [2021-05-21 19:59:48,919 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 19:59:48,919 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 19:59:48,919 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 19:59:48,919 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-05-21 19:59:48,919 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) [2021-05-21 19:59:49,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 19:59:49,091 INFO L93 Difference]: Finished difference Result 1303 states and 3927 transitions. [2021-05-21 19:59:49,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 19:59:49,091 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-05-21 19:59:49,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 19:59:49,093 INFO L225 Difference]: With dead ends: 1303 [2021-05-21 19:59:49,093 INFO L226 Difference]: Without dead ends: 1192 [2021-05-21 19:59:49,093 INFO L777 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 [2021-05-21 19:59:49,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1192 states. [2021-05-21 19:59:49,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1192 to 1154. [2021-05-21 19:59:49,106 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) [2021-05-21 19:59:49,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1154 states to 1154 states and 3534 transitions. [2021-05-21 19:59:49,108 INFO L78 Accepts]: Start accepts. Automaton has 1154 states and 3534 transitions. Word has length 26 [2021-05-21 19:59:49,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 19:59:49,108 INFO L482 AbstractCegarLoop]: Abstraction has 1154 states and 3534 transitions. [2021-05-21 19:59:49,108 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) [2021-05-21 19:59:49,108 INFO L276 IsEmpty]: Start isEmpty. Operand 1154 states and 3534 transitions. [2021-05-21 19:59:49,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 19:59:49,109 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 19:59:49,109 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 19:59:49,109 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-05-21 19:59:49,109 INFO L430 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 19:59:49,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 19:59:49,110 INFO L82 PathProgramCache]: Analyzing trace with hash -1801147818, now seen corresponding path program 29 times [2021-05-21 19:59:49,110 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 19:59:49,110 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1304883732] [2021-05-21 19:59:49,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 19:59:49,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 19:59:49,168 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 19:59:49,168 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 19:59:49,168 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1304883732] [2021-05-21 19:59:49,168 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1304883732] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 19:59:49,168 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 19:59:49,168 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-21 19:59:49,168 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1478860524] [2021-05-21 19:59:49,169 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 19:59:49,169 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 19:59:49,169 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 19:59:49,169 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-05-21 19:59:49,169 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) [2021-05-21 19:59:49,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 19:59:49,323 INFO L93 Difference]: Finished difference Result 1496 states and 4503 transitions. [2021-05-21 19:59:49,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 19:59:49,324 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-05-21 19:59:49,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 19:59:49,325 INFO L225 Difference]: With dead ends: 1496 [2021-05-21 19:59:49,326 INFO L226 Difference]: Without dead ends: 1369 [2021-05-21 19:59:49,326 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 43.5ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-05-21 19:59:49,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1369 states. [2021-05-21 19:59:49,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1369 to 1143. [2021-05-21 19:59:49,354 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) [2021-05-21 19:59:49,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1143 states to 1143 states and 3501 transitions. [2021-05-21 19:59:49,355 INFO L78 Accepts]: Start accepts. Automaton has 1143 states and 3501 transitions. Word has length 26 [2021-05-21 19:59:49,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 19:59:49,356 INFO L482 AbstractCegarLoop]: Abstraction has 1143 states and 3501 transitions. [2021-05-21 19:59:49,356 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 19:59:49,356 INFO L276 IsEmpty]: Start isEmpty. Operand 1143 states and 3501 transitions. [2021-05-21 19:59:49,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 19:59:49,357 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 19:59:49,357 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 19:59:49,357 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-05-21 19:59:49,357 INFO L430 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 19:59:49,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 19:59:49,358 INFO L82 PathProgramCache]: Analyzing trace with hash 1038261820, now seen corresponding path program 30 times [2021-05-21 19:59:49,358 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 19:59:49,358 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2044052672] [2021-05-21 19:59:49,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 19:59:49,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 19:59:49,410 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 19:59:49,411 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 19:59:49,411 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2044052672] [2021-05-21 19:59:49,411 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2044052672] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 19:59:49,411 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 19:59:49,411 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-21 19:59:49,411 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [22827399] [2021-05-21 19:59:49,411 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 19:59:49,411 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 19:59:49,411 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 19:59:49,411 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-05-21 19:59:49,412 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) [2021-05-21 19:59:49,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 19:59:49,568 INFO L93 Difference]: Finished difference Result 1406 states and 4227 transitions. [2021-05-21 19:59:49,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 19:59:49,568 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-05-21 19:59:49,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 19:59:49,569 INFO L225 Difference]: With dead ends: 1406 [2021-05-21 19:59:49,569 INFO L226 Difference]: Without dead ends: 1239 [2021-05-21 19:59:49,570 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 42.8ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-05-21 19:59:49,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1239 states. [2021-05-21 19:59:49,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1239 to 1113. [2021-05-21 19:59:49,582 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) [2021-05-21 19:59:49,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1113 states to 1113 states and 3431 transitions. [2021-05-21 19:59:49,583 INFO L78 Accepts]: Start accepts. Automaton has 1113 states and 3431 transitions. Word has length 26 [2021-05-21 19:59:49,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 19:59:49,583 INFO L482 AbstractCegarLoop]: Abstraction has 1113 states and 3431 transitions. [2021-05-21 19:59:49,583 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) [2021-05-21 19:59:49,584 INFO L276 IsEmpty]: Start isEmpty. Operand 1113 states and 3431 transitions. [2021-05-21 19:59:49,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 19:59:49,585 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 19:59:49,585 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 19:59:49,585 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2021-05-21 19:59:49,585 INFO L430 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 19:59:49,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 19:59:49,585 INFO L82 PathProgramCache]: Analyzing trace with hash -1327824616, now seen corresponding path program 31 times [2021-05-21 19:59:49,586 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 19:59:49,586 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1278575399] [2021-05-21 19:59:49,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 19:59:49,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 19:59:49,633 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 19:59:49,633 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 19:59:49,633 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1278575399] [2021-05-21 19:59:49,633 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1278575399] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 19:59:49,633 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 19:59:49,633 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-05-21 19:59:49,633 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [559023132] [2021-05-21 19:59:49,633 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 19:59:49,633 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 19:59:49,633 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 19:59:49,633 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-05-21 19:59:49,634 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) [2021-05-21 19:59:49,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 19:59:49,738 INFO L93 Difference]: Finished difference Result 1453 states and 4359 transitions. [2021-05-21 19:59:49,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 19:59:49,738 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 [2021-05-21 19:59:49,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 19:59:49,739 INFO L225 Difference]: With dead ends: 1453 [2021-05-21 19:59:49,739 INFO L226 Difference]: Without dead ends: 1292 [2021-05-21 19:59:49,740 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 34.5ms TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-05-21 19:59:49,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1292 states. [2021-05-21 19:59:49,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1292 to 1206. [2021-05-21 19:59:49,753 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) [2021-05-21 19:59:49,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1206 states to 1206 states and 3680 transitions. [2021-05-21 19:59:49,755 INFO L78 Accepts]: Start accepts. Automaton has 1206 states and 3680 transitions. Word has length 26 [2021-05-21 19:59:49,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 19:59:49,756 INFO L482 AbstractCegarLoop]: Abstraction has 1206 states and 3680 transitions. [2021-05-21 19:59:49,756 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) [2021-05-21 19:59:49,756 INFO L276 IsEmpty]: Start isEmpty. Operand 1206 states and 3680 transitions. [2021-05-21 19:59:49,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 19:59:49,757 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 19:59:49,757 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 19:59:49,757 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2021-05-21 19:59:49,758 INFO L430 AbstractCegarLoop]: === Iteration 34 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 19:59:49,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 19:59:49,758 INFO L82 PathProgramCache]: Analyzing trace with hash 2107557686, now seen corresponding path program 32 times [2021-05-21 19:59:49,758 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 19:59:49,758 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1334690085] [2021-05-21 19:59:49,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 19:59:49,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 19:59:49,822 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 19:59:49,823 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 19:59:49,823 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1334690085] [2021-05-21 19:59:49,823 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1334690085] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 19:59:49,823 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 19:59:49,823 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 19:59:49,823 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1100249958] [2021-05-21 19:59:49,823 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-21 19:59:49,823 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 19:59:49,823 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-21 19:59:49,823 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-05-21 19:59:49,823 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) [2021-05-21 19:59:49,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 19:59:49,945 INFO L93 Difference]: Finished difference Result 1409 states and 4234 transitions. [2021-05-21 19:59:49,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-21 19:59:49,946 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 [2021-05-21 19:59:49,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 19:59:49,947 INFO L225 Difference]: With dead ends: 1409 [2021-05-21 19:59:49,947 INFO L226 Difference]: Without dead ends: 1286 [2021-05-21 19:59:49,947 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 50.0ms TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-05-21 19:59:49,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1286 states. [2021-05-21 19:59:49,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1286 to 1180. [2021-05-21 19:59:49,960 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) [2021-05-21 19:59:49,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1180 states to 1180 states and 3612 transitions. [2021-05-21 19:59:49,961 INFO L78 Accepts]: Start accepts. Automaton has 1180 states and 3612 transitions. Word has length 26 [2021-05-21 19:59:49,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 19:59:49,961 INFO L482 AbstractCegarLoop]: Abstraction has 1180 states and 3612 transitions. [2021-05-21 19:59:49,961 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) [2021-05-21 19:59:49,961 INFO L276 IsEmpty]: Start isEmpty. Operand 1180 states and 3612 transitions. [2021-05-21 19:59:49,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 19:59:49,963 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 19:59:49,963 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 19:59:49,963 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2021-05-21 19:59:49,963 INFO L430 AbstractCegarLoop]: === Iteration 35 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 19:59:49,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 19:59:49,963 INFO L82 PathProgramCache]: Analyzing trace with hash 1205087834, now seen corresponding path program 33 times [2021-05-21 19:59:49,963 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 19:59:49,964 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [223413901] [2021-05-21 19:59:49,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 19:59:49,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 19:59:50,004 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 19:59:50,004 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 19:59:50,004 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [223413901] [2021-05-21 19:59:50,004 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [223413901] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 19:59:50,004 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 19:59:50,004 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-05-21 19:59:50,004 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [247150343] [2021-05-21 19:59:50,004 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 19:59:50,004 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 19:59:50,005 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 19:59:50,005 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-05-21 19:59:50,005 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) [2021-05-21 19:59:50,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 19:59:50,102 INFO L93 Difference]: Finished difference Result 1516 states and 4589 transitions. [2021-05-21 19:59:50,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 19:59:50,102 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 [2021-05-21 19:59:50,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 19:59:50,104 INFO L225 Difference]: With dead ends: 1516 [2021-05-21 19:59:50,104 INFO L226 Difference]: Without dead ends: 1419 [2021-05-21 19:59:50,104 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 29.9ms TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-05-21 19:59:50,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1419 states. [2021-05-21 19:59:50,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1419 to 1247. [2021-05-21 19:59:50,117 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) [2021-05-21 19:59:50,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1247 states to 1247 states and 3825 transitions. [2021-05-21 19:59:50,119 INFO L78 Accepts]: Start accepts. Automaton has 1247 states and 3825 transitions. Word has length 26 [2021-05-21 19:59:50,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 19:59:50,119 INFO L482 AbstractCegarLoop]: Abstraction has 1247 states and 3825 transitions. [2021-05-21 19:59:50,119 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) [2021-05-21 19:59:50,119 INFO L276 IsEmpty]: Start isEmpty. Operand 1247 states and 3825 transitions. [2021-05-21 19:59:50,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 19:59:50,121 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 19:59:50,121 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 19:59:50,121 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2021-05-21 19:59:50,121 INFO L430 AbstractCegarLoop]: === Iteration 36 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 19:59:50,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 19:59:50,121 INFO L82 PathProgramCache]: Analyzing trace with hash 296836698, now seen corresponding path program 34 times [2021-05-21 19:59:50,121 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 19:59:50,122 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1792858866] [2021-05-21 19:59:50,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 19:59:50,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 19:59:50,178 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 19:59:50,178 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 19:59:50,178 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1792858866] [2021-05-21 19:59:50,178 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1792858866] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 19:59:50,178 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 19:59:50,178 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 19:59:50,179 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1506929430] [2021-05-21 19:59:50,179 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-21 19:59:50,179 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 19:59:50,179 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-21 19:59:50,179 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-05-21 19:59:50,179 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) [2021-05-21 19:59:50,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 19:59:50,328 INFO L93 Difference]: Finished difference Result 1463 states and 4440 transitions. [2021-05-21 19:59:50,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-21 19:59:50,328 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 [2021-05-21 19:59:50,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 19:59:50,330 INFO L225 Difference]: With dead ends: 1463 [2021-05-21 19:59:50,330 INFO L226 Difference]: Without dead ends: 1384 [2021-05-21 19:59:50,330 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 42.2ms TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-05-21 19:59:50,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1384 states. [2021-05-21 19:59:50,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1384 to 1263. [2021-05-21 19:59:50,343 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) [2021-05-21 19:59:50,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1263 states to 1263 states and 3875 transitions. [2021-05-21 19:59:50,345 INFO L78 Accepts]: Start accepts. Automaton has 1263 states and 3875 transitions. Word has length 26 [2021-05-21 19:59:50,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 19:59:50,345 INFO L482 AbstractCegarLoop]: Abstraction has 1263 states and 3875 transitions. [2021-05-21 19:59:50,345 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) [2021-05-21 19:59:50,345 INFO L276 IsEmpty]: Start isEmpty. Operand 1263 states and 3875 transitions. [2021-05-21 19:59:50,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 19:59:50,347 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 19:59:50,347 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 19:59:50,347 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2021-05-21 19:59:50,347 INFO L430 AbstractCegarLoop]: === Iteration 37 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 19:59:50,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 19:59:50,347 INFO L82 PathProgramCache]: Analyzing trace with hash 1166281306, now seen corresponding path program 35 times [2021-05-21 19:59:50,347 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 19:59:50,347 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1552532188] [2021-05-21 19:59:50,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 19:59:50,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 19:59:50,395 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 19:59:50,395 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 19:59:50,395 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1552532188] [2021-05-21 19:59:50,395 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1552532188] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 19:59:50,395 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 19:59:50,395 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 19:59:50,395 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [712233934] [2021-05-21 19:59:50,395 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-21 19:59:50,395 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 19:59:50,396 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-21 19:59:50,396 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-05-21 19:59:50,396 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) [2021-05-21 19:59:50,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 19:59:50,529 INFO L93 Difference]: Finished difference Result 1486 states and 4488 transitions. [2021-05-21 19:59:50,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-21 19:59:50,529 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 [2021-05-21 19:59:50,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 19:59:50,531 INFO L225 Difference]: With dead ends: 1486 [2021-05-21 19:59:50,531 INFO L226 Difference]: Without dead ends: 1382 [2021-05-21 19:59:50,531 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 37.7ms TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-05-21 19:59:50,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1382 states. [2021-05-21 19:59:50,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1382 to 1252. [2021-05-21 19:59:50,544 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) [2021-05-21 19:59:50,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1252 states to 1252 states and 3838 transitions. [2021-05-21 19:59:50,546 INFO L78 Accepts]: Start accepts. Automaton has 1252 states and 3838 transitions. Word has length 26 [2021-05-21 19:59:50,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 19:59:50,546 INFO L482 AbstractCegarLoop]: Abstraction has 1252 states and 3838 transitions. [2021-05-21 19:59:50,546 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) [2021-05-21 19:59:50,546 INFO L276 IsEmpty]: Start isEmpty. Operand 1252 states and 3838 transitions. [2021-05-21 19:59:50,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 19:59:50,548 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 19:59:50,548 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 19:59:50,548 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2021-05-21 19:59:50,548 INFO L430 AbstractCegarLoop]: === Iteration 38 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 19:59:50,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 19:59:50,548 INFO L82 PathProgramCache]: Analyzing trace with hash 1217412664, now seen corresponding path program 36 times [2021-05-21 19:59:50,549 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 19:59:50,549 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1271503783] [2021-05-21 19:59:50,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 19:59:50,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 19:59:50,595 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 19:59:50,596 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 19:59:50,596 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1271503783] [2021-05-21 19:59:50,596 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1271503783] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 19:59:50,596 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 19:59:50,596 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 19:59:50,596 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [684569502] [2021-05-21 19:59:50,596 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-21 19:59:50,596 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 19:59:50,596 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-21 19:59:50,597 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-05-21 19:59:50,597 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) [2021-05-21 19:59:50,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 19:59:50,719 INFO L93 Difference]: Finished difference Result 1521 states and 4598 transitions. [2021-05-21 19:59:50,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-21 19:59:50,720 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 [2021-05-21 19:59:50,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 19:59:50,721 INFO L225 Difference]: With dead ends: 1521 [2021-05-21 19:59:50,721 INFO L226 Difference]: Without dead ends: 1427 [2021-05-21 19:59:50,721 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 37.8ms TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-05-21 19:59:50,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1427 states. [2021-05-21 19:59:50,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1427 to 1240. [2021-05-21 19:59:50,734 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) [2021-05-21 19:59:50,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1240 states to 1240 states and 3803 transitions. [2021-05-21 19:59:50,736 INFO L78 Accepts]: Start accepts. Automaton has 1240 states and 3803 transitions. Word has length 26 [2021-05-21 19:59:50,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 19:59:50,736 INFO L482 AbstractCegarLoop]: Abstraction has 1240 states and 3803 transitions. [2021-05-21 19:59:50,736 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) [2021-05-21 19:59:50,736 INFO L276 IsEmpty]: Start isEmpty. Operand 1240 states and 3803 transitions. [2021-05-21 19:59:50,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 19:59:50,738 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 19:59:50,738 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 19:59:50,738 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2021-05-21 19:59:50,738 INFO L430 AbstractCegarLoop]: === Iteration 39 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 19:59:50,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 19:59:50,738 INFO L82 PathProgramCache]: Analyzing trace with hash 369322260, now seen corresponding path program 37 times [2021-05-21 19:59:50,738 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 19:59:50,738 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1720040486] [2021-05-21 19:59:50,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 19:59:50,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 19:59:50,777 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 19:59:50,777 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 19:59:50,777 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1720040486] [2021-05-21 19:59:50,777 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1720040486] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 19:59:50,777 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 19:59:50,777 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-05-21 19:59:50,777 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [872403532] [2021-05-21 19:59:50,777 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 19:59:50,777 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 19:59:50,778 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 19:59:50,778 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-05-21 19:59:50,778 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) [2021-05-21 19:59:50,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 19:59:50,868 INFO L93 Difference]: Finished difference Result 1472 states and 4446 transitions. [2021-05-21 19:59:50,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 19:59:50,869 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 [2021-05-21 19:59:50,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 19:59:50,870 INFO L225 Difference]: With dead ends: 1472 [2021-05-21 19:59:50,870 INFO L226 Difference]: Without dead ends: 1393 [2021-05-21 19:59:50,870 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 29.4ms TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-05-21 19:59:50,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1393 states. [2021-05-21 19:59:50,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1393 to 1277. [2021-05-21 19:59:50,883 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) [2021-05-21 19:59:50,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1277 states to 1277 states and 3910 transitions. [2021-05-21 19:59:50,897 INFO L78 Accepts]: Start accepts. Automaton has 1277 states and 3910 transitions. Word has length 26 [2021-05-21 19:59:50,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 19:59:50,897 INFO L482 AbstractCegarLoop]: Abstraction has 1277 states and 3910 transitions. [2021-05-21 19:59:50,898 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) [2021-05-21 19:59:50,898 INFO L276 IsEmpty]: Start isEmpty. Operand 1277 states and 3910 transitions. [2021-05-21 19:59:50,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 19:59:50,899 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 19:59:50,899 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 19:59:50,900 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2021-05-21 19:59:50,900 INFO L430 AbstractCegarLoop]: === Iteration 40 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 19:59:50,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 19:59:50,900 INFO L82 PathProgramCache]: Analyzing trace with hash 1238766868, now seen corresponding path program 38 times [2021-05-21 19:59:50,900 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 19:59:50,900 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [234065743] [2021-05-21 19:59:50,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 19:59:50,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 19:59:50,950 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 19:59:50,950 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 19:59:50,950 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [234065743] [2021-05-21 19:59:50,950 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [234065743] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 19:59:50,951 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 19:59:50,951 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 19:59:50,951 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [426658529] [2021-05-21 19:59:50,951 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-21 19:59:50,951 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 19:59:50,951 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-21 19:59:50,951 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-05-21 19:59:50,951 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) [2021-05-21 19:59:51,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 19:59:51,075 INFO L93 Difference]: Finished difference Result 1553 states and 4668 transitions. [2021-05-21 19:59:51,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-21 19:59:51,075 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 [2021-05-21 19:59:51,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 19:59:51,077 INFO L225 Difference]: With dead ends: 1553 [2021-05-21 19:59:51,077 INFO L226 Difference]: Without dead ends: 1354 [2021-05-21 19:59:51,077 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 38.0ms TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-05-21 19:59:51,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1354 states. [2021-05-21 19:59:51,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1354 to 1244. [2021-05-21 19:59:51,089 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) [2021-05-21 19:59:51,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1244 states to 1244 states and 3779 transitions. [2021-05-21 19:59:51,091 INFO L78 Accepts]: Start accepts. Automaton has 1244 states and 3779 transitions. Word has length 26 [2021-05-21 19:59:51,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 19:59:51,091 INFO L482 AbstractCegarLoop]: Abstraction has 1244 states and 3779 transitions. [2021-05-21 19:59:51,091 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) [2021-05-21 19:59:51,091 INFO L276 IsEmpty]: Start isEmpty. Operand 1244 states and 3779 transitions. [2021-05-21 19:59:51,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 19:59:51,092 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 19:59:51,093 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 19:59:51,093 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2021-05-21 19:59:51,093 INFO L430 AbstractCegarLoop]: === Iteration 41 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 19:59:51,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 19:59:51,093 INFO L82 PathProgramCache]: Analyzing trace with hash -1168096970, now seen corresponding path program 39 times [2021-05-21 19:59:51,093 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 19:59:51,093 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1804252] [2021-05-21 19:59:51,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 19:59:51,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 19:59:51,141 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 19:59:51,141 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 19:59:51,141 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1804252] [2021-05-21 19:59:51,141 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1804252] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 19:59:51,141 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 19:59:51,141 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 19:59:51,141 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1847510205] [2021-05-21 19:59:51,141 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-21 19:59:51,141 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 19:59:51,141 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-21 19:59:51,142 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-05-21 19:59:51,142 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) [2021-05-21 19:59:51,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 19:59:51,281 INFO L93 Difference]: Finished difference Result 1430 states and 4297 transitions. [2021-05-21 19:59:51,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-21 19:59:51,281 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 [2021-05-21 19:59:51,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 19:59:51,283 INFO L225 Difference]: With dead ends: 1430 [2021-05-21 19:59:51,283 INFO L226 Difference]: Without dead ends: 1351 [2021-05-21 19:59:51,283 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 37.0ms TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-05-21 19:59:51,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1351 states. [2021-05-21 19:59:51,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1351 to 1255. [2021-05-21 19:59:51,296 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) [2021-05-21 19:59:51,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1255 states to 1255 states and 3810 transitions. [2021-05-21 19:59:51,297 INFO L78 Accepts]: Start accepts. Automaton has 1255 states and 3810 transitions. Word has length 26 [2021-05-21 19:59:51,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 19:59:51,297 INFO L482 AbstractCegarLoop]: Abstraction has 1255 states and 3810 transitions. [2021-05-21 19:59:51,297 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) [2021-05-21 19:59:51,298 INFO L276 IsEmpty]: Start isEmpty. Operand 1255 states and 3810 transitions. [2021-05-21 19:59:51,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 19:59:51,300 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 19:59:51,300 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 19:59:51,300 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2021-05-21 19:59:51,300 INFO L430 AbstractCegarLoop]: === Iteration 42 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 19:59:51,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 19:59:51,300 INFO L82 PathProgramCache]: Analyzing trace with hash -298652362, now seen corresponding path program 40 times [2021-05-21 19:59:51,300 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 19:59:51,300 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1924242365] [2021-05-21 19:59:51,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 19:59:51,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 19:59:51,355 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 19:59:51,355 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 19:59:51,356 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1924242365] [2021-05-21 19:59:51,356 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1924242365] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 19:59:51,356 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 19:59:51,356 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 19:59:51,356 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1982592424] [2021-05-21 19:59:51,356 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-21 19:59:51,356 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 19:59:51,356 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-21 19:59:51,356 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-05-21 19:59:51,356 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) [2021-05-21 19:59:51,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 19:59:51,499 INFO L93 Difference]: Finished difference Result 1537 states and 4623 transitions. [2021-05-21 19:59:51,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-21 19:59:51,499 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 [2021-05-21 19:59:51,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 19:59:51,500 INFO L225 Difference]: With dead ends: 1537 [2021-05-21 19:59:51,500 INFO L226 Difference]: Without dead ends: 1442 [2021-05-21 19:59:51,501 INFO L777 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 [2021-05-21 19:59:51,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1442 states. [2021-05-21 19:59:51,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1442 to 1244. [2021-05-21 19:59:51,513 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) [2021-05-21 19:59:51,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1244 states to 1244 states and 3776 transitions. [2021-05-21 19:59:51,515 INFO L78 Accepts]: Start accepts. Automaton has 1244 states and 3776 transitions. Word has length 26 [2021-05-21 19:59:51,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 19:59:51,515 INFO L482 AbstractCegarLoop]: Abstraction has 1244 states and 3776 transitions. [2021-05-21 19:59:51,515 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) [2021-05-21 19:59:51,515 INFO L276 IsEmpty]: Start isEmpty. Operand 1244 states and 3776 transitions. [2021-05-21 19:59:51,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 19:59:51,517 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 19:59:51,517 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 19:59:51,517 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2021-05-21 19:59:51,517 INFO L430 AbstractCegarLoop]: === Iteration 43 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 19:59:51,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 19:59:51,517 INFO L82 PathProgramCache]: Analyzing trace with hash 1872416688, now seen corresponding path program 41 times [2021-05-21 19:59:51,517 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 19:59:51,517 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1321360371] [2021-05-21 19:59:51,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 19:59:51,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 19:59:51,561 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 19:59:51,562 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 19:59:51,562 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1321360371] [2021-05-21 19:59:51,562 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1321360371] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 19:59:51,562 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 19:59:51,562 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 19:59:51,562 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [876894509] [2021-05-21 19:59:51,562 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-21 19:59:51,562 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 19:59:51,562 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-21 19:59:51,562 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-05-21 19:59:51,562 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) [2021-05-21 19:59:51,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 19:59:51,684 INFO L93 Difference]: Finished difference Result 1525 states and 4571 transitions. [2021-05-21 19:59:51,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-21 19:59:51,684 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 [2021-05-21 19:59:51,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 19:59:51,686 INFO L225 Difference]: With dead ends: 1525 [2021-05-21 19:59:51,686 INFO L226 Difference]: Without dead ends: 1377 [2021-05-21 19:59:51,686 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 34.9ms TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-05-21 19:59:51,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1377 states. [2021-05-21 19:59:51,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1377 to 1245. [2021-05-21 19:59:51,699 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) [2021-05-21 19:59:51,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1245 states to 1245 states and 3786 transitions. [2021-05-21 19:59:51,700 INFO L78 Accepts]: Start accepts. Automaton has 1245 states and 3786 transitions. Word has length 26 [2021-05-21 19:59:51,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 19:59:51,700 INFO L482 AbstractCegarLoop]: Abstraction has 1245 states and 3786 transitions. [2021-05-21 19:59:51,700 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) [2021-05-21 19:59:51,700 INFO L276 IsEmpty]: Start isEmpty. Operand 1245 states and 3786 transitions. [2021-05-21 19:59:51,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 19:59:51,702 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 19:59:51,702 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 19:59:51,702 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2021-05-21 19:59:51,702 INFO L430 AbstractCegarLoop]: === Iteration 44 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 19:59:51,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 19:59:51,702 INFO L82 PathProgramCache]: Analyzing trace with hash 733362486, now seen corresponding path program 42 times [2021-05-21 19:59:51,702 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 19:59:51,702 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [998812188] [2021-05-21 19:59:51,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 19:59:51,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 19:59:51,777 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 19:59:51,778 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 19:59:51,778 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [998812188] [2021-05-21 19:59:51,778 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [998812188] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 19:59:51,778 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 19:59:51,778 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 19:59:51,778 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [272701469] [2021-05-21 19:59:51,778 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-21 19:59:51,778 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 19:59:51,778 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-21 19:59:51,778 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-05-21 19:59:51,778 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) [2021-05-21 19:59:51,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 19:59:51,912 INFO L93 Difference]: Finished difference Result 1531 states and 4573 transitions. [2021-05-21 19:59:51,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-21 19:59:51,912 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 [2021-05-21 19:59:51,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 19:59:51,914 INFO L225 Difference]: With dead ends: 1531 [2021-05-21 19:59:51,914 INFO L226 Difference]: Without dead ends: 1401 [2021-05-21 19:59:51,914 INFO L777 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 [2021-05-21 19:59:51,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1401 states. [2021-05-21 19:59:51,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1401 to 1297. [2021-05-21 19:59:51,927 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) [2021-05-21 19:59:51,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1297 states to 1297 states and 3926 transitions. [2021-05-21 19:59:51,929 INFO L78 Accepts]: Start accepts. Automaton has 1297 states and 3926 transitions. Word has length 26 [2021-05-21 19:59:51,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 19:59:51,929 INFO L482 AbstractCegarLoop]: Abstraction has 1297 states and 3926 transitions. [2021-05-21 19:59:51,929 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) [2021-05-21 19:59:51,929 INFO L276 IsEmpty]: Start isEmpty. Operand 1297 states and 3926 transitions. [2021-05-21 19:59:51,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 19:59:51,930 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 19:59:51,930 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 19:59:51,931 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2021-05-21 19:59:51,931 INFO L430 AbstractCegarLoop]: === Iteration 45 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 19:59:51,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 19:59:51,931 INFO L82 PathProgramCache]: Analyzing trace with hash -126222508, now seen corresponding path program 43 times [2021-05-21 19:59:51,931 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 19:59:51,931 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [671387340] [2021-05-21 19:59:51,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 19:59:51,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 19:59:51,985 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 19:59:51,985 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 19:59:51,985 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [671387340] [2021-05-21 19:59:51,985 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [671387340] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 19:59:51,985 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 19:59:51,985 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-21 19:59:51,985 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1839598679] [2021-05-21 19:59:51,985 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 19:59:51,986 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 19:59:51,986 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 19:59:51,986 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-05-21 19:59:51,986 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) [2021-05-21 19:59:52,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 19:59:52,158 INFO L93 Difference]: Finished difference Result 1518 states and 4526 transitions. [2021-05-21 19:59:52,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 19:59:52,158 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-05-21 19:59:52,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 19:59:52,160 INFO L225 Difference]: With dead ends: 1518 [2021-05-21 19:59:52,160 INFO L226 Difference]: Without dead ends: 1395 [2021-05-21 19:59:52,160 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 43.0ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-05-21 19:59:52,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1395 states. [2021-05-21 19:59:52,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1395 to 1271. [2021-05-21 19:59:52,174 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) [2021-05-21 19:59:52,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1271 states to 1271 states and 3860 transitions. [2021-05-21 19:59:52,176 INFO L78 Accepts]: Start accepts. Automaton has 1271 states and 3860 transitions. Word has length 26 [2021-05-21 19:59:52,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 19:59:52,176 INFO L482 AbstractCegarLoop]: Abstraction has 1271 states and 3860 transitions. [2021-05-21 19:59:52,176 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 19:59:52,176 INFO L276 IsEmpty]: Start isEmpty. Operand 1271 states and 3860 transitions. [2021-05-21 19:59:52,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 19:59:52,178 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 19:59:52,178 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 19:59:52,178 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2021-05-21 19:59:52,178 INFO L430 AbstractCegarLoop]: === Iteration 46 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 19:59:52,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 19:59:52,178 INFO L82 PathProgramCache]: Analyzing trace with hash 363756408, now seen corresponding path program 44 times [2021-05-21 19:59:52,178 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 19:59:52,178 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1898576010] [2021-05-21 19:59:52,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 19:59:52,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 19:59:52,222 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 19:59:52,222 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 19:59:52,223 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1898576010] [2021-05-21 19:59:52,223 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1898576010] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 19:59:52,223 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 19:59:52,223 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 19:59:52,223 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [560553862] [2021-05-21 19:59:52,223 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-21 19:59:52,223 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 19:59:52,223 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-21 19:59:52,223 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-05-21 19:59:52,223 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) [2021-05-21 19:59:52,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 19:59:52,365 INFO L93 Difference]: Finished difference Result 1636 states and 4901 transitions. [2021-05-21 19:59:52,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-21 19:59:52,365 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 [2021-05-21 19:59:52,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 19:59:52,367 INFO L225 Difference]: With dead ends: 1636 [2021-05-21 19:59:52,367 INFO L226 Difference]: Without dead ends: 1496 [2021-05-21 19:59:52,367 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 34.7ms TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-05-21 19:59:52,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1496 states. [2021-05-21 19:59:52,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1496 to 1331. [2021-05-21 19:59:52,384 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) [2021-05-21 19:59:52,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1331 states to 1331 states and 4038 transitions. [2021-05-21 19:59:52,386 INFO L78 Accepts]: Start accepts. Automaton has 1331 states and 4038 transitions. Word has length 26 [2021-05-21 19:59:52,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 19:59:52,386 INFO L482 AbstractCegarLoop]: Abstraction has 1331 states and 4038 transitions. [2021-05-21 19:59:52,386 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) [2021-05-21 19:59:52,386 INFO L276 IsEmpty]: Start isEmpty. Operand 1331 states and 4038 transitions. [2021-05-21 19:59:52,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 19:59:52,388 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 19:59:52,388 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 19:59:52,388 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2021-05-21 19:59:52,388 INFO L430 AbstractCegarLoop]: === Iteration 47 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 19:59:52,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 19:59:52,388 INFO L82 PathProgramCache]: Analyzing trace with hash 1287799378, now seen corresponding path program 45 times [2021-05-21 19:59:52,388 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 19:59:52,388 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1871558736] [2021-05-21 19:59:52,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 19:59:52,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 19:59:52,455 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 19:59:52,455 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 19:59:52,455 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1871558736] [2021-05-21 19:59:52,455 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1871558736] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 19:59:52,455 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 19:59:52,455 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-21 19:59:52,456 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1005680691] [2021-05-21 19:59:52,456 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 19:59:52,456 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 19:59:52,456 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 19:59:52,456 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-05-21 19:59:52,456 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) [2021-05-21 19:59:52,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 19:59:52,610 INFO L93 Difference]: Finished difference Result 1514 states and 4527 transitions. [2021-05-21 19:59:52,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 19:59:52,610 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-05-21 19:59:52,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 19:59:52,612 INFO L225 Difference]: With dead ends: 1514 [2021-05-21 19:59:52,612 INFO L226 Difference]: Without dead ends: 1403 [2021-05-21 19:59:52,612 INFO L777 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 [2021-05-21 19:59:52,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1403 states. [2021-05-21 19:59:52,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1403 to 1295. [2021-05-21 19:59:52,625 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) [2021-05-21 19:59:52,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1295 states to 1295 states and 3921 transitions. [2021-05-21 19:59:52,626 INFO L78 Accepts]: Start accepts. Automaton has 1295 states and 3921 transitions. Word has length 26 [2021-05-21 19:59:52,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 19:59:52,626 INFO L482 AbstractCegarLoop]: Abstraction has 1295 states and 3921 transitions. [2021-05-21 19:59:52,626 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 19:59:52,626 INFO L276 IsEmpty]: Start isEmpty. Operand 1295 states and 3921 transitions. [2021-05-21 19:59:52,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 19:59:52,628 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 19:59:52,628 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 19:59:52,628 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2021-05-21 19:59:52,628 INFO L430 AbstractCegarLoop]: === Iteration 48 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 19:59:52,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 19:59:52,628 INFO L82 PathProgramCache]: Analyzing trace with hash -1248494412, now seen corresponding path program 46 times [2021-05-21 19:59:52,629 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 19:59:52,629 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [322042652] [2021-05-21 19:59:52,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 19:59:52,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 19:59:52,686 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 19:59:52,686 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 19:59:52,686 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [322042652] [2021-05-21 19:59:52,686 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [322042652] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 19:59:52,686 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 19:59:52,686 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-21 19:59:52,686 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [707362016] [2021-05-21 19:59:52,686 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 19:59:52,686 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 19:59:52,686 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 19:59:52,687 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-05-21 19:59:52,687 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) [2021-05-21 19:59:52,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 19:59:52,841 INFO L93 Difference]: Finished difference Result 1453 states and 4342 transitions. [2021-05-21 19:59:52,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 19:59:52,842 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-05-21 19:59:52,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 19:59:52,843 INFO L225 Difference]: With dead ends: 1453 [2021-05-21 19:59:52,843 INFO L226 Difference]: Without dead ends: 1374 [2021-05-21 19:59:52,843 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 42.8ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-05-21 19:59:52,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1374 states. [2021-05-21 19:59:52,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1374 to 1319. [2021-05-21 19:59:52,857 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) [2021-05-21 19:59:52,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1319 states to 1319 states and 3994 transitions. [2021-05-21 19:59:52,858 INFO L78 Accepts]: Start accepts. Automaton has 1319 states and 3994 transitions. Word has length 26 [2021-05-21 19:59:52,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 19:59:52,858 INFO L482 AbstractCegarLoop]: Abstraction has 1319 states and 3994 transitions. [2021-05-21 19:59:52,858 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 19:59:52,858 INFO L276 IsEmpty]: Start isEmpty. Operand 1319 states and 3994 transitions. [2021-05-21 19:59:52,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 19:59:52,860 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 19:59:52,860 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 19:59:52,860 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2021-05-21 19:59:52,860 INFO L430 AbstractCegarLoop]: === Iteration 49 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 19:59:52,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 19:59:52,860 INFO L82 PathProgramCache]: Analyzing trace with hash -379049804, now seen corresponding path program 47 times [2021-05-21 19:59:52,860 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 19:59:52,860 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2133728735] [2021-05-21 19:59:52,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 19:59:52,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 19:59:52,929 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 19:59:52,929 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 19:59:52,929 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2133728735] [2021-05-21 19:59:52,929 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2133728735] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 19:59:52,930 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 19:59:52,930 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-21 19:59:52,930 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [37673462] [2021-05-21 19:59:52,930 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 19:59:52,930 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 19:59:52,930 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 19:59:52,930 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-05-21 19:59:52,930 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) [2021-05-21 19:59:53,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 19:59:53,097 INFO L93 Difference]: Finished difference Result 1550 states and 4630 transitions. [2021-05-21 19:59:53,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 19:59:53,097 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-05-21 19:59:53,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 19:59:53,099 INFO L225 Difference]: With dead ends: 1550 [2021-05-21 19:59:53,099 INFO L226 Difference]: Without dead ends: 1455 [2021-05-21 19:59:53,099 INFO L777 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 [2021-05-21 19:59:53,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1455 states. [2021-05-21 19:59:53,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1455 to 1323. [2021-05-21 19:59:53,112 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) [2021-05-21 19:59:53,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1323 states to 1323 states and 4007 transitions. [2021-05-21 19:59:53,113 INFO L78 Accepts]: Start accepts. Automaton has 1323 states and 4007 transitions. Word has length 26 [2021-05-21 19:59:53,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 19:59:53,114 INFO L482 AbstractCegarLoop]: Abstraction has 1323 states and 4007 transitions. [2021-05-21 19:59:53,114 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) [2021-05-21 19:59:53,114 INFO L276 IsEmpty]: Start isEmpty. Operand 1323 states and 4007 transitions. [2021-05-21 19:59:53,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 19:59:53,115 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 19:59:53,115 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 19:59:53,115 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2021-05-21 19:59:53,115 INFO L430 AbstractCegarLoop]: === Iteration 50 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 19:59:53,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 19:59:53,115 INFO L82 PathProgramCache]: Analyzing trace with hash -1847761034, now seen corresponding path program 48 times [2021-05-21 19:59:53,115 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 19:59:53,115 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [774581958] [2021-05-21 19:59:53,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 19:59:53,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 19:59:53,185 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 19:59:53,185 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 19:59:53,185 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [774581958] [2021-05-21 19:59:53,185 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [774581958] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 19:59:53,185 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 19:59:53,186 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-21 19:59:53,186 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1532280187] [2021-05-21 19:59:53,186 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 19:59:53,186 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 19:59:53,186 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 19:59:53,186 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-05-21 19:59:53,186 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) [2021-05-21 19:59:53,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 19:59:53,361 INFO L93 Difference]: Finished difference Result 1551 states and 4630 transitions. [2021-05-21 19:59:53,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 19:59:53,361 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-05-21 19:59:53,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 19:59:53,363 INFO L225 Difference]: With dead ends: 1551 [2021-05-21 19:59:53,363 INFO L226 Difference]: Without dead ends: 1472 [2021-05-21 19:59:53,363 INFO L777 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 [2021-05-21 19:59:53,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1472 states. [2021-05-21 19:59:53,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1472 to 1327. [2021-05-21 19:59:53,378 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) [2021-05-21 19:59:53,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1327 states to 1327 states and 4015 transitions. [2021-05-21 19:59:53,380 INFO L78 Accepts]: Start accepts. Automaton has 1327 states and 4015 transitions. Word has length 26 [2021-05-21 19:59:53,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 19:59:53,380 INFO L482 AbstractCegarLoop]: Abstraction has 1327 states and 4015 transitions. [2021-05-21 19:59:53,380 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 19:59:53,380 INFO L276 IsEmpty]: Start isEmpty. Operand 1327 states and 4015 transitions. [2021-05-21 19:59:53,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 19:59:53,381 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 19:59:53,381 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 19:59:53,381 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2021-05-21 19:59:53,381 INFO L430 AbstractCegarLoop]: === Iteration 51 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 19:59:53,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 19:59:53,382 INFO L82 PathProgramCache]: Analyzing trace with hash 1873808986, now seen corresponding path program 49 times [2021-05-21 19:59:53,382 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 19:59:53,382 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1261110790] [2021-05-21 19:59:53,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 19:59:53,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 19:59:53,442 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 19:59:53,442 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 19:59:53,442 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1261110790] [2021-05-21 19:59:53,442 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1261110790] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 19:59:53,442 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 19:59:53,442 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-21 19:59:53,442 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2016134006] [2021-05-21 19:59:53,442 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 19:59:53,442 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 19:59:53,443 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 19:59:53,443 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-05-21 19:59:53,443 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) [2021-05-21 19:59:53,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 19:59:53,625 INFO L93 Difference]: Finished difference Result 1593 states and 4759 transitions. [2021-05-21 19:59:53,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 19:59:53,625 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-05-21 19:59:53,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 19:59:53,627 INFO L225 Difference]: With dead ends: 1593 [2021-05-21 19:59:53,627 INFO L226 Difference]: Without dead ends: 1491 [2021-05-21 19:59:53,627 INFO L777 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 [2021-05-21 19:59:53,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1491 states. [2021-05-21 19:59:53,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1491 to 1313. [2021-05-21 19:59:53,641 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) [2021-05-21 19:59:53,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1313 states to 1313 states and 3985 transitions. [2021-05-21 19:59:53,643 INFO L78 Accepts]: Start accepts. Automaton has 1313 states and 3985 transitions. Word has length 26 [2021-05-21 19:59:53,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 19:59:53,644 INFO L482 AbstractCegarLoop]: Abstraction has 1313 states and 3985 transitions. [2021-05-21 19:59:53,644 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) [2021-05-21 19:59:53,644 INFO L276 IsEmpty]: Start isEmpty. Operand 1313 states and 3985 transitions. [2021-05-21 19:59:53,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 19:59:53,645 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 19:59:53,645 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 19:59:53,645 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2021-05-21 19:59:53,645 INFO L430 AbstractCegarLoop]: === Iteration 52 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 19:59:53,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 19:59:53,645 INFO L82 PathProgramCache]: Analyzing trace with hash -440597224, now seen corresponding path program 50 times [2021-05-21 19:59:53,646 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 19:59:53,646 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1630167644] [2021-05-21 19:59:53,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 19:59:53,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 19:59:53,710 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 19:59:53,710 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 19:59:53,710 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1630167644] [2021-05-21 19:59:53,710 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1630167644] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 19:59:53,710 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 19:59:53,710 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 19:59:53,710 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [820604296] [2021-05-21 19:59:53,710 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-21 19:59:53,710 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 19:59:53,711 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-21 19:59:53,711 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-05-21 19:59:53,711 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) [2021-05-21 19:59:53,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 19:59:53,852 INFO L93 Difference]: Finished difference Result 1603 states and 4787 transitions. [2021-05-21 19:59:53,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-21 19:59:53,852 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 [2021-05-21 19:59:53,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 19:59:53,854 INFO L225 Difference]: With dead ends: 1603 [2021-05-21 19:59:53,854 INFO L226 Difference]: Without dead ends: 1453 [2021-05-21 19:59:53,854 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 42.3ms TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-05-21 19:59:53,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1453 states. [2021-05-21 19:59:53,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1453 to 1339. [2021-05-21 19:59:53,867 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) [2021-05-21 19:59:53,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1339 states to 1339 states and 4059 transitions. [2021-05-21 19:59:53,868 INFO L78 Accepts]: Start accepts. Automaton has 1339 states and 4059 transitions. Word has length 26 [2021-05-21 19:59:53,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 19:59:53,869 INFO L482 AbstractCegarLoop]: Abstraction has 1339 states and 4059 transitions. [2021-05-21 19:59:53,869 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) [2021-05-21 19:59:53,869 INFO L276 IsEmpty]: Start isEmpty. Operand 1339 states and 4059 transitions. [2021-05-21 19:59:53,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 19:59:53,870 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 19:59:53,870 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 19:59:53,870 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2021-05-21 19:59:53,870 INFO L430 AbstractCegarLoop]: === Iteration 53 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 19:59:53,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 19:59:53,870 INFO L82 PathProgramCache]: Analyzing trace with hash -1300182218, now seen corresponding path program 51 times [2021-05-21 19:59:53,870 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 19:59:53,871 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [274216782] [2021-05-21 19:59:53,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 19:59:53,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 19:59:53,926 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 19:59:53,926 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 19:59:53,926 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [274216782] [2021-05-21 19:59:53,926 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [274216782] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 19:59:53,926 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 19:59:53,926 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-21 19:59:53,926 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [105248291] [2021-05-21 19:59:53,926 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 19:59:53,926 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 19:59:53,927 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 19:59:53,927 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-05-21 19:59:53,927 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) [2021-05-21 19:59:54,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 19:59:54,081 INFO L93 Difference]: Finished difference Result 1564 states and 4681 transitions. [2021-05-21 19:59:54,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 19:59:54,081 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 [2021-05-21 19:59:54,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 19:59:54,083 INFO L225 Difference]: With dead ends: 1564 [2021-05-21 19:59:54,083 INFO L226 Difference]: Without dead ends: 1432 [2021-05-21 19:59:54,083 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 45.9ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-05-21 19:59:54,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1432 states. [2021-05-21 19:59:54,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1432 to 1313. [2021-05-21 19:59:54,096 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) [2021-05-21 19:59:54,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1313 states to 1313 states and 3991 transitions. [2021-05-21 19:59:54,098 INFO L78 Accepts]: Start accepts. Automaton has 1313 states and 3991 transitions. Word has length 26 [2021-05-21 19:59:54,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 19:59:54,098 INFO L482 AbstractCegarLoop]: Abstraction has 1313 states and 3991 transitions. [2021-05-21 19:59:54,098 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) [2021-05-21 19:59:54,098 INFO L276 IsEmpty]: Start isEmpty. Operand 1313 states and 3991 transitions. [2021-05-21 19:59:54,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 19:59:54,099 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 19:59:54,099 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 19:59:54,099 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2021-05-21 19:59:54,099 INFO L430 AbstractCegarLoop]: === Iteration 54 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 19:59:54,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 19:59:54,100 INFO L82 PathProgramCache]: Analyzing trace with hash -658405768, now seen corresponding path program 52 times [2021-05-21 19:59:54,100 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 19:59:54,100 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2094761229] [2021-05-21 19:59:54,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 19:59:54,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 19:59:54,155 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 19:59:54,155 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 19:59:54,155 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2094761229] [2021-05-21 19:59:54,155 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2094761229] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 19:59:54,155 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 19:59:54,155 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 19:59:54,155 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2108950388] [2021-05-21 19:59:54,155 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-21 19:59:54,155 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 19:59:54,155 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-21 19:59:54,156 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-05-21 19:59:54,156 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) [2021-05-21 19:59:54,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 19:59:54,292 INFO L93 Difference]: Finished difference Result 1533 states and 4603 transitions. [2021-05-21 19:59:54,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-21 19:59:54,292 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 [2021-05-21 19:59:54,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 19:59:54,294 INFO L225 Difference]: With dead ends: 1533 [2021-05-21 19:59:54,294 INFO L226 Difference]: Without dead ends: 1436 [2021-05-21 19:59:54,294 INFO L777 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 [2021-05-21 19:59:54,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1436 states. [2021-05-21 19:59:54,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1436 to 1330. [2021-05-21 19:59:54,307 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) [2021-05-21 19:59:54,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1330 states to 1330 states and 4042 transitions. [2021-05-21 19:59:54,309 INFO L78 Accepts]: Start accepts. Automaton has 1330 states and 4042 transitions. Word has length 26 [2021-05-21 19:59:54,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 19:59:54,309 INFO L482 AbstractCegarLoop]: Abstraction has 1330 states and 4042 transitions. [2021-05-21 19:59:54,309 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) [2021-05-21 19:59:54,309 INFO L276 IsEmpty]: Start isEmpty. Operand 1330 states and 4042 transitions. [2021-05-21 19:59:54,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 19:59:54,310 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 19:59:54,310 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 19:59:54,310 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2021-05-21 19:59:54,311 INFO L430 AbstractCegarLoop]: === Iteration 55 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 19:59:54,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 19:59:54,311 INFO L82 PathProgramCache]: Analyzing trace with hash -1566656904, now seen corresponding path program 53 times [2021-05-21 19:59:54,311 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 19:59:54,311 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1426307854] [2021-05-21 19:59:54,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 19:59:54,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 19:59:54,369 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 19:59:54,369 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 19:59:54,369 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1426307854] [2021-05-21 19:59:54,369 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1426307854] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 19:59:54,369 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 19:59:54,369 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-21 19:59:54,370 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1242367237] [2021-05-21 19:59:54,370 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 19:59:54,370 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 19:59:54,370 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 19:59:54,370 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-05-21 19:59:54,370 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) [2021-05-21 19:59:54,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 19:59:54,545 INFO L93 Difference]: Finished difference Result 1540 states and 4628 transitions. [2021-05-21 19:59:54,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 19:59:54,545 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 [2021-05-21 19:59:54,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 19:59:54,547 INFO L225 Difference]: With dead ends: 1540 [2021-05-21 19:59:54,547 INFO L226 Difference]: Without dead ends: 1461 [2021-05-21 19:59:54,547 INFO L777 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 [2021-05-21 19:59:54,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1461 states. [2021-05-21 19:59:54,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1461 to 1342. [2021-05-21 19:59:54,560 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) [2021-05-21 19:59:54,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1342 states to 1342 states and 4076 transitions. [2021-05-21 19:59:54,562 INFO L78 Accepts]: Start accepts. Automaton has 1342 states and 4076 transitions. Word has length 26 [2021-05-21 19:59:54,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 19:59:54,562 INFO L482 AbstractCegarLoop]: Abstraction has 1342 states and 4076 transitions. [2021-05-21 19:59:54,562 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) [2021-05-21 19:59:54,562 INFO L276 IsEmpty]: Start isEmpty. Operand 1342 states and 4076 transitions. [2021-05-21 19:59:54,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 19:59:54,563 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 19:59:54,563 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 19:59:54,563 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2021-05-21 19:59:54,563 INFO L430 AbstractCegarLoop]: === Iteration 56 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 19:59:54,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 19:59:54,564 INFO L82 PathProgramCache]: Analyzing trace with hash -697212296, now seen corresponding path program 54 times [2021-05-21 19:59:54,564 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 19:59:54,564 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [170001068] [2021-05-21 19:59:54,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 19:59:54,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 19:59:54,627 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 19:59:54,627 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 19:59:54,627 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [170001068] [2021-05-21 19:59:54,627 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [170001068] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 19:59:54,627 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 19:59:54,627 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-21 19:59:54,627 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [627607294] [2021-05-21 19:59:54,627 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 19:59:54,627 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 19:59:54,627 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 19:59:54,627 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-05-21 19:59:54,628 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) [2021-05-21 19:59:54,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 19:59:54,793 INFO L93 Difference]: Finished difference Result 1587 states and 4770 transitions. [2021-05-21 19:59:54,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 19:59:54,793 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-05-21 19:59:54,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 19:59:54,795 INFO L225 Difference]: With dead ends: 1587 [2021-05-21 19:59:54,795 INFO L226 Difference]: Without dead ends: 1474 [2021-05-21 19:59:54,795 INFO L777 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 [2021-05-21 19:59:54,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1474 states. [2021-05-21 19:59:54,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1474 to 1340. [2021-05-21 19:59:54,808 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) [2021-05-21 19:59:54,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1340 states to 1340 states and 4071 transitions. [2021-05-21 19:59:54,810 INFO L78 Accepts]: Start accepts. Automaton has 1340 states and 4071 transitions. Word has length 26 [2021-05-21 19:59:54,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 19:59:54,810 INFO L482 AbstractCegarLoop]: Abstraction has 1340 states and 4071 transitions. [2021-05-21 19:59:54,810 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 19:59:54,810 INFO L276 IsEmpty]: Start isEmpty. Operand 1340 states and 4071 transitions. [2021-05-21 19:59:54,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 19:59:54,811 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 19:59:54,811 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 19:59:54,811 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2021-05-21 19:59:54,811 INFO L430 AbstractCegarLoop]: === Iteration 57 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 19:59:54,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 19:59:54,812 INFO L82 PathProgramCache]: Analyzing trace with hash -646080938, now seen corresponding path program 55 times [2021-05-21 19:59:54,812 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 19:59:54,812 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [628844624] [2021-05-21 19:59:54,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 19:59:54,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 19:59:54,878 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 19:59:54,878 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 19:59:54,878 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [628844624] [2021-05-21 19:59:54,878 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [628844624] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 19:59:54,879 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 19:59:54,879 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-21 19:59:54,879 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [937336067] [2021-05-21 19:59:54,879 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 19:59:54,879 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 19:59:54,879 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 19:59:54,879 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-05-21 19:59:54,879 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) [2021-05-21 19:59:55,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 19:59:55,040 INFO L93 Difference]: Finished difference Result 1550 states and 4655 transitions. [2021-05-21 19:59:55,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 19:59:55,041 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-05-21 19:59:55,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 19:59:55,042 INFO L225 Difference]: With dead ends: 1550 [2021-05-21 19:59:55,042 INFO L226 Difference]: Without dead ends: 1456 [2021-05-21 19:59:55,042 INFO L777 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 [2021-05-21 19:59:55,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1456 states. [2021-05-21 19:59:55,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1456 to 1323. [2021-05-21 19:59:55,055 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) [2021-05-21 19:59:55,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1323 states to 1323 states and 4022 transitions. [2021-05-21 19:59:55,057 INFO L78 Accepts]: Start accepts. Automaton has 1323 states and 4022 transitions. Word has length 26 [2021-05-21 19:59:55,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 19:59:55,057 INFO L482 AbstractCegarLoop]: Abstraction has 1323 states and 4022 transitions. [2021-05-21 19:59:55,057 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 19:59:55,057 INFO L276 IsEmpty]: Start isEmpty. Operand 1323 states and 4022 transitions. [2021-05-21 19:59:55,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 19:59:55,058 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 19:59:55,058 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 19:59:55,058 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2021-05-21 19:59:55,058 INFO L430 AbstractCegarLoop]: === Iteration 58 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 19:59:55,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 19:59:55,059 INFO L82 PathProgramCache]: Analyzing trace with hash -1155018158, now seen corresponding path program 56 times [2021-05-21 19:59:55,059 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 19:59:55,059 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [985974465] [2021-05-21 19:59:55,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 19:59:55,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 19:59:55,106 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 19:59:55,106 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 19:59:55,106 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [985974465] [2021-05-21 19:59:55,106 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [985974465] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 19:59:55,106 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 19:59:55,107 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 19:59:55,107 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [940315629] [2021-05-21 19:59:55,107 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-21 19:59:55,107 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 19:59:55,107 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-21 19:59:55,107 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-05-21 19:59:55,107 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) [2021-05-21 19:59:55,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 19:59:55,234 INFO L93 Difference]: Finished difference Result 1614 states and 4865 transitions. [2021-05-21 19:59:55,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-21 19:59:55,234 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 [2021-05-21 19:59:55,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 19:59:55,236 INFO L225 Difference]: With dead ends: 1614 [2021-05-21 19:59:55,236 INFO L226 Difference]: Without dead ends: 1535 [2021-05-21 19:59:55,236 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 35.1ms TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-05-21 19:59:55,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1535 states. [2021-05-21 19:59:55,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1535 to 1344. [2021-05-21 19:59:55,249 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) [2021-05-21 19:59:55,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1344 states to 1344 states and 4084 transitions. [2021-05-21 19:59:55,251 INFO L78 Accepts]: Start accepts. Automaton has 1344 states and 4084 transitions. Word has length 26 [2021-05-21 19:59:55,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 19:59:55,251 INFO L482 AbstractCegarLoop]: Abstraction has 1344 states and 4084 transitions. [2021-05-21 19:59:55,251 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) [2021-05-21 19:59:55,251 INFO L276 IsEmpty]: Start isEmpty. Operand 1344 states and 4084 transitions. [2021-05-21 19:59:55,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 19:59:55,252 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 19:59:55,252 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 19:59:55,252 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2021-05-21 19:59:55,252 INFO L430 AbstractCegarLoop]: === Iteration 59 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 19:59:55,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 19:59:55,253 INFO L82 PathProgramCache]: Analyzing trace with hash 67669594, now seen corresponding path program 57 times [2021-05-21 19:59:55,253 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 19:59:55,253 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1963026260] [2021-05-21 19:59:55,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 19:59:55,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 19:59:55,311 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 19:59:55,311 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 19:59:55,311 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1963026260] [2021-05-21 19:59:55,312 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1963026260] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 19:59:55,312 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 19:59:55,312 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 19:59:55,312 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1720152405] [2021-05-21 19:59:55,312 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-21 19:59:55,312 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 19:59:55,312 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-21 19:59:55,312 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-05-21 19:59:55,312 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) [2021-05-21 19:59:55,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 19:59:55,437 INFO L93 Difference]: Finished difference Result 1680 states and 5059 transitions. [2021-05-21 19:59:55,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-21 19:59:55,437 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 [2021-05-21 19:59:55,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 19:59:55,439 INFO L225 Difference]: With dead ends: 1680 [2021-05-21 19:59:55,439 INFO L226 Difference]: Without dead ends: 1585 [2021-05-21 19:59:55,439 INFO L777 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 [2021-05-21 19:59:55,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1585 states. [2021-05-21 19:59:55,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1585 to 1362. [2021-05-21 19:59:55,453 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) [2021-05-21 19:59:55,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1362 states to 1362 states and 4144 transitions. [2021-05-21 19:59:55,454 INFO L78 Accepts]: Start accepts. Automaton has 1362 states and 4144 transitions. Word has length 26 [2021-05-21 19:59:55,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 19:59:55,455 INFO L482 AbstractCegarLoop]: Abstraction has 1362 states and 4144 transitions. [2021-05-21 19:59:55,455 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) [2021-05-21 19:59:55,455 INFO L276 IsEmpty]: Start isEmpty. Operand 1362 states and 4144 transitions. [2021-05-21 19:59:55,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 19:59:55,456 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 19:59:55,456 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 19:59:55,456 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2021-05-21 19:59:55,456 INFO L430 AbstractCegarLoop]: === Iteration 60 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 19:59:55,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 19:59:55,456 INFO L82 PathProgramCache]: Analyzing trace with hash 1571020596, now seen corresponding path program 58 times [2021-05-21 19:59:55,456 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 19:59:55,456 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [674654809] [2021-05-21 19:59:55,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 19:59:55,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 19:59:55,501 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 19:59:55,502 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 19:59:55,502 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [674654809] [2021-05-21 19:59:55,502 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [674654809] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 19:59:55,502 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 19:59:55,502 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 19:59:55,502 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [715678129] [2021-05-21 19:59:55,502 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-21 19:59:55,502 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 19:59:55,502 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-21 19:59:55,502 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-05-21 19:59:55,502 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) [2021-05-21 19:59:55,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 19:59:55,621 INFO L93 Difference]: Finished difference Result 1581 states and 4769 transitions. [2021-05-21 19:59:55,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-21 19:59:55,621 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 [2021-05-21 19:59:55,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 19:59:55,623 INFO L225 Difference]: With dead ends: 1581 [2021-05-21 19:59:55,623 INFO L226 Difference]: Without dead ends: 1490 [2021-05-21 19:59:55,623 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 35.0ms TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-05-21 19:59:55,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1490 states. [2021-05-21 19:59:55,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1490 to 1345. [2021-05-21 19:59:55,636 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) [2021-05-21 19:59:55,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1345 states to 1345 states and 4092 transitions. [2021-05-21 19:59:55,638 INFO L78 Accepts]: Start accepts. Automaton has 1345 states and 4092 transitions. Word has length 26 [2021-05-21 19:59:55,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 19:59:55,638 INFO L482 AbstractCegarLoop]: Abstraction has 1345 states and 4092 transitions. [2021-05-21 19:59:55,638 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) [2021-05-21 19:59:55,638 INFO L276 IsEmpty]: Start isEmpty. Operand 1345 states and 4092 transitions. [2021-05-21 19:59:55,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 19:59:55,639 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 19:59:55,639 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 19:59:55,639 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2021-05-21 19:59:55,639 INFO L430 AbstractCegarLoop]: === Iteration 61 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 19:59:55,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 19:59:55,640 INFO L82 PathProgramCache]: Analyzing trace with hash 1824705716, now seen corresponding path program 59 times [2021-05-21 19:59:55,640 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 19:59:55,640 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [107008739] [2021-05-21 19:59:55,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 19:59:55,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 19:59:55,699 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 19:59:55,699 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 19:59:55,699 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [107008739] [2021-05-21 19:59:55,699 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [107008739] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 19:59:55,699 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 19:59:55,699 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-21 19:59:55,699 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [557473067] [2021-05-21 19:59:55,699 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 19:59:55,699 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 19:59:55,700 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 19:59:55,700 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-05-21 19:59:55,700 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) [2021-05-21 19:59:55,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 19:59:55,880 INFO L93 Difference]: Finished difference Result 1471 states and 4427 transitions. [2021-05-21 19:59:55,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 19:59:55,881 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 [2021-05-21 19:59:55,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 19:59:55,882 INFO L225 Difference]: With dead ends: 1471 [2021-05-21 19:59:55,883 INFO L226 Difference]: Without dead ends: 1392 [2021-05-21 19:59:55,883 INFO L777 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 [2021-05-21 19:59:55,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1392 states. [2021-05-21 19:59:55,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1392 to 1357. [2021-05-21 19:59:55,897 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) [2021-05-21 19:59:55,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1357 states to 1357 states and 4126 transitions. [2021-05-21 19:59:55,898 INFO L78 Accepts]: Start accepts. Automaton has 1357 states and 4126 transitions. Word has length 26 [2021-05-21 19:59:55,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 19:59:55,899 INFO L482 AbstractCegarLoop]: Abstraction has 1357 states and 4126 transitions. [2021-05-21 19:59:55,899 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) [2021-05-21 19:59:55,899 INFO L276 IsEmpty]: Start isEmpty. Operand 1357 states and 4126 transitions. [2021-05-21 19:59:55,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 19:59:55,900 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 19:59:55,900 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 19:59:55,900 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2021-05-21 19:59:55,900 INFO L430 AbstractCegarLoop]: === Iteration 62 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 19:59:55,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 19:59:55,900 INFO L82 PathProgramCache]: Analyzing trace with hash -1600816972, now seen corresponding path program 60 times [2021-05-21 19:59:55,900 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 19:59:55,901 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1352716048] [2021-05-21 19:59:55,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 19:59:55,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 19:59:55,957 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 19:59:55,957 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 19:59:55,957 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1352716048] [2021-05-21 19:59:55,957 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1352716048] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 19:59:55,957 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 19:59:55,957 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-21 19:59:55,957 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1787902960] [2021-05-21 19:59:55,957 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 19:59:55,957 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 19:59:55,958 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 19:59:55,958 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-05-21 19:59:55,958 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) [2021-05-21 19:59:56,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 19:59:56,136 INFO L93 Difference]: Finished difference Result 1521 states and 4567 transitions. [2021-05-21 19:59:56,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 19:59:56,137 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-05-21 19:59:56,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 19:59:56,138 INFO L225 Difference]: With dead ends: 1521 [2021-05-21 19:59:56,138 INFO L226 Difference]: Without dead ends: 1426 [2021-05-21 19:59:56,139 INFO L777 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 [2021-05-21 19:59:56,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1426 states. [2021-05-21 19:59:56,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1426 to 1365. [2021-05-21 19:59:56,151 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) [2021-05-21 19:59:56,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1365 states to 1365 states and 4154 transitions. [2021-05-21 19:59:56,153 INFO L78 Accepts]: Start accepts. Automaton has 1365 states and 4154 transitions. Word has length 26 [2021-05-21 19:59:56,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 19:59:56,153 INFO L482 AbstractCegarLoop]: Abstraction has 1365 states and 4154 transitions. [2021-05-21 19:59:56,153 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 19:59:56,153 INFO L276 IsEmpty]: Start isEmpty. Operand 1365 states and 4154 transitions. [2021-05-21 19:59:56,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 19:59:56,154 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 19:59:56,154 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 19:59:56,154 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2021-05-21 19:59:56,154 INFO L430 AbstractCegarLoop]: === Iteration 63 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 19:59:56,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 19:59:56,155 INFO L82 PathProgramCache]: Analyzing trace with hash 1225439094, now seen corresponding path program 61 times [2021-05-21 19:59:56,155 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 19:59:56,155 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1569321968] [2021-05-21 19:59:56,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 19:59:56,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 19:59:56,223 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 19:59:56,223 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 19:59:56,223 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1569321968] [2021-05-21 19:59:56,223 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1569321968] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 19:59:56,223 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 19:59:56,223 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-21 19:59:56,223 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1736662013] [2021-05-21 19:59:56,224 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 19:59:56,224 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 19:59:56,224 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 19:59:56,224 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-05-21 19:59:56,224 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) [2021-05-21 19:59:56,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 19:59:56,406 INFO L93 Difference]: Finished difference Result 1567 states and 4715 transitions. [2021-05-21 19:59:56,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 19:59:56,406 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-05-21 19:59:56,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 19:59:56,408 INFO L225 Difference]: With dead ends: 1567 [2021-05-21 19:59:56,408 INFO L226 Difference]: Without dead ends: 1488 [2021-05-21 19:59:56,408 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 58.5ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-05-21 19:59:56,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1488 states. [2021-05-21 19:59:56,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1488 to 1372. [2021-05-21 19:59:56,421 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) [2021-05-21 19:59:56,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1372 states to 1372 states and 4173 transitions. [2021-05-21 19:59:56,423 INFO L78 Accepts]: Start accepts. Automaton has 1372 states and 4173 transitions. Word has length 26 [2021-05-21 19:59:56,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 19:59:56,423 INFO L482 AbstractCegarLoop]: Abstraction has 1372 states and 4173 transitions. [2021-05-21 19:59:56,423 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 19:59:56,423 INFO L276 IsEmpty]: Start isEmpty. Operand 1372 states and 4173 transitions. [2021-05-21 19:59:56,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 19:59:56,424 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 19:59:56,424 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 19:59:56,424 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2021-05-21 19:59:56,424 INFO L430 AbstractCegarLoop]: === Iteration 64 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 19:59:56,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 19:59:56,424 INFO L82 PathProgramCache]: Analyzing trace with hash 652041818, now seen corresponding path program 62 times [2021-05-21 19:59:56,425 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 19:59:56,425 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2059815257] [2021-05-21 19:59:56,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 19:59:56,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 19:59:56,482 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 19:59:56,482 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 19:59:56,482 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2059815257] [2021-05-21 19:59:56,482 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2059815257] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 19:59:56,482 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 19:59:56,482 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-21 19:59:56,482 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1270105635] [2021-05-21 19:59:56,483 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 19:59:56,483 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 19:59:56,483 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 19:59:56,483 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-05-21 19:59:56,483 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) [2021-05-21 19:59:56,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 19:59:56,641 INFO L93 Difference]: Finished difference Result 1591 states and 4779 transitions. [2021-05-21 19:59:56,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 19:59:56,641 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-05-21 19:59:56,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 19:59:56,643 INFO L225 Difference]: With dead ends: 1591 [2021-05-21 19:59:56,643 INFO L226 Difference]: Without dead ends: 1496 [2021-05-21 19:59:56,643 INFO L777 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 [2021-05-21 19:59:56,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1496 states. [2021-05-21 19:59:56,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1496 to 1377. [2021-05-21 19:59:56,656 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) [2021-05-21 19:59:56,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1377 states to 1377 states and 4190 transitions. [2021-05-21 19:59:56,658 INFO L78 Accepts]: Start accepts. Automaton has 1377 states and 4190 transitions. Word has length 26 [2021-05-21 19:59:56,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 19:59:56,658 INFO L482 AbstractCegarLoop]: Abstraction has 1377 states and 4190 transitions. [2021-05-21 19:59:56,658 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 19:59:56,658 INFO L276 IsEmpty]: Start isEmpty. Operand 1377 states and 4190 transitions. [2021-05-21 19:59:56,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 19:59:56,659 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 19:59:56,659 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 19:59:56,660 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2021-05-21 19:59:56,660 INFO L430 AbstractCegarLoop]: === Iteration 65 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 19:59:56,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 19:59:56,660 INFO L82 PathProgramCache]: Analyzing trace with hash 1238592666, now seen corresponding path program 63 times [2021-05-21 19:59:56,660 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 19:59:56,660 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1061143111] [2021-05-21 19:59:56,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 19:59:56,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 19:59:56,740 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 19:59:56,740 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 19:59:56,740 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1061143111] [2021-05-21 19:59:56,740 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1061143111] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 19:59:56,740 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 19:59:56,740 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-21 19:59:56,741 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1800366792] [2021-05-21 19:59:56,741 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 19:59:56,741 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 19:59:56,741 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 19:59:56,741 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-05-21 19:59:56,741 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) [2021-05-21 19:59:56,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 19:59:56,896 INFO L93 Difference]: Finished difference Result 1579 states and 4742 transitions. [2021-05-21 19:59:56,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 19:59:56,896 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-05-21 19:59:56,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 19:59:56,898 INFO L225 Difference]: With dead ends: 1579 [2021-05-21 19:59:56,898 INFO L226 Difference]: Without dead ends: 1491 [2021-05-21 19:59:56,898 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 52.2ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-05-21 19:59:56,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1491 states. [2021-05-21 19:59:56,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1491 to 1383. [2021-05-21 19:59:56,911 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) [2021-05-21 19:59:56,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1383 states to 1383 states and 4209 transitions. [2021-05-21 19:59:56,913 INFO L78 Accepts]: Start accepts. Automaton has 1383 states and 4209 transitions. Word has length 26 [2021-05-21 19:59:56,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 19:59:56,913 INFO L482 AbstractCegarLoop]: Abstraction has 1383 states and 4209 transitions. [2021-05-21 19:59:56,913 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 19:59:56,913 INFO L276 IsEmpty]: Start isEmpty. Operand 1383 states and 4209 transitions. [2021-05-21 19:59:56,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 19:59:56,914 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 19:59:56,914 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 19:59:56,914 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2021-05-21 19:59:56,914 INFO L430 AbstractCegarLoop]: === Iteration 66 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 19:59:56,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 19:59:56,915 INFO L82 PathProgramCache]: Analyzing trace with hash 526524824, now seen corresponding path program 64 times [2021-05-21 19:59:56,915 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 19:59:56,915 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [448639795] [2021-05-21 19:59:56,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 19:59:56,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 19:59:56,985 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 19:59:56,985 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 19:59:56,985 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [448639795] [2021-05-21 19:59:56,985 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [448639795] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 19:59:56,985 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 19:59:56,985 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-21 19:59:56,985 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [275835933] [2021-05-21 19:59:56,985 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 19:59:56,985 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 19:59:56,985 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 19:59:56,986 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-05-21 19:59:56,986 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) [2021-05-21 19:59:57,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 19:59:57,141 INFO L93 Difference]: Finished difference Result 1558 states and 4681 transitions. [2021-05-21 19:59:57,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 19:59:57,142 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-05-21 19:59:57,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 19:59:57,143 INFO L225 Difference]: With dead ends: 1558 [2021-05-21 19:59:57,144 INFO L226 Difference]: Without dead ends: 1464 [2021-05-21 19:59:57,144 INFO L777 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 [2021-05-21 19:59:57,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1464 states. [2021-05-21 19:59:57,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1464 to 1385. [2021-05-21 19:59:57,156 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) [2021-05-21 19:59:57,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1385 states to 1385 states and 4217 transitions. [2021-05-21 19:59:57,158 INFO L78 Accepts]: Start accepts. Automaton has 1385 states and 4217 transitions. Word has length 26 [2021-05-21 19:59:57,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 19:59:57,158 INFO L482 AbstractCegarLoop]: Abstraction has 1385 states and 4217 transitions. [2021-05-21 19:59:57,158 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 19:59:57,158 INFO L276 IsEmpty]: Start isEmpty. Operand 1385 states and 4217 transitions. [2021-05-21 19:59:57,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 19:59:57,160 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 19:59:57,160 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 19:59:57,160 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2021-05-21 19:59:57,160 INFO L430 AbstractCegarLoop]: === Iteration 67 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 19:59:57,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 19:59:57,160 INFO L82 PathProgramCache]: Analyzing trace with hash 1617897750, now seen corresponding path program 65 times [2021-05-21 19:59:57,160 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 19:59:57,160 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [809093683] [2021-05-21 19:59:57,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 19:59:57,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 19:59:57,219 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 19:59:57,219 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 19:59:57,219 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [809093683] [2021-05-21 19:59:57,219 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [809093683] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 19:59:57,219 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 19:59:57,220 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-21 19:59:57,220 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1150446032] [2021-05-21 19:59:57,220 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 19:59:57,220 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 19:59:57,220 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 19:59:57,220 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-05-21 19:59:57,220 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) [2021-05-21 19:59:57,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 19:59:57,378 INFO L93 Difference]: Finished difference Result 1534 states and 4620 transitions. [2021-05-21 19:59:57,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 19:59:57,378 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-05-21 19:59:57,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 19:59:57,380 INFO L225 Difference]: With dead ends: 1534 [2021-05-21 19:59:57,380 INFO L226 Difference]: Without dead ends: 1455 [2021-05-21 19:59:57,381 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 43.9ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-05-21 19:59:57,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1455 states. [2021-05-21 19:59:57,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1455 to 1391. [2021-05-21 19:59:57,394 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) [2021-05-21 19:59:57,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1391 states to 1391 states and 4240 transitions. [2021-05-21 19:59:57,396 INFO L78 Accepts]: Start accepts. Automaton has 1391 states and 4240 transitions. Word has length 26 [2021-05-21 19:59:57,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 19:59:57,396 INFO L482 AbstractCegarLoop]: Abstraction has 1391 states and 4240 transitions. [2021-05-21 19:59:57,396 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 19:59:57,396 INFO L276 IsEmpty]: Start isEmpty. Operand 1391 states and 4240 transitions. [2021-05-21 19:59:57,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 19:59:57,398 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 19:59:57,398 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 19:59:57,398 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2021-05-21 19:59:57,398 INFO L430 AbstractCegarLoop]: === Iteration 68 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 19:59:57,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 19:59:57,398 INFO L82 PathProgramCache]: Analyzing trace with hash -1807624938, now seen corresponding path program 66 times [2021-05-21 19:59:57,398 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 19:59:57,398 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1609389074] [2021-05-21 19:59:57,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 19:59:57,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 19:59:57,455 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 19:59:57,455 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 19:59:57,455 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1609389074] [2021-05-21 19:59:57,455 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1609389074] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 19:59:57,455 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 19:59:57,455 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-21 19:59:57,455 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [17737668] [2021-05-21 19:59:57,456 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 19:59:57,456 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 19:59:57,456 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 19:59:57,456 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-05-21 19:59:57,456 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) [2021-05-21 19:59:57,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 19:59:57,629 INFO L93 Difference]: Finished difference Result 1569 states and 4729 transitions. [2021-05-21 19:59:57,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 19:59:57,630 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 [2021-05-21 19:59:57,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 19:59:57,631 INFO L225 Difference]: With dead ends: 1569 [2021-05-21 19:59:57,631 INFO L226 Difference]: Without dead ends: 1474 [2021-05-21 19:59:57,632 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 43.2ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-05-21 19:59:57,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1474 states. [2021-05-21 19:59:57,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1474 to 1400. [2021-05-21 19:59:57,644 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) [2021-05-21 19:59:57,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1400 states to 1400 states and 4271 transitions. [2021-05-21 19:59:57,646 INFO L78 Accepts]: Start accepts. Automaton has 1400 states and 4271 transitions. Word has length 26 [2021-05-21 19:59:57,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 19:59:57,646 INFO L482 AbstractCegarLoop]: Abstraction has 1400 states and 4271 transitions. [2021-05-21 19:59:57,647 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) [2021-05-21 19:59:57,647 INFO L276 IsEmpty]: Start isEmpty. Operand 1400 states and 4271 transitions. [2021-05-21 19:59:57,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 19:59:57,648 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 19:59:57,649 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 19:59:57,649 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2021-05-21 19:59:57,649 INFO L430 AbstractCegarLoop]: === Iteration 69 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 19:59:57,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 19:59:57,649 INFO L82 PathProgramCache]: Analyzing trace with hash 113058932, now seen corresponding path program 67 times [2021-05-21 19:59:57,649 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 19:59:57,649 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1883941431] [2021-05-21 19:59:57,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 19:59:57,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 19:59:57,716 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 19:59:57,716 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 19:59:57,716 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1883941431] [2021-05-21 19:59:57,717 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1883941431] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 19:59:57,717 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 19:59:57,717 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-21 19:59:57,717 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1608864055] [2021-05-21 19:59:57,717 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 19:59:57,717 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 19:59:57,717 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 19:59:57,717 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-05-21 19:59:57,717 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) [2021-05-21 19:59:57,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 19:59:57,872 INFO L93 Difference]: Finished difference Result 1559 states and 4705 transitions. [2021-05-21 19:59:57,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 19:59:57,873 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-05-21 19:59:57,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 19:59:57,874 INFO L225 Difference]: With dead ends: 1559 [2021-05-21 19:59:57,874 INFO L226 Difference]: Without dead ends: 1474 [2021-05-21 19:59:57,874 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 56.4ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-05-21 19:59:57,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1474 states. [2021-05-21 19:59:57,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1474 to 1404. [2021-05-21 19:59:57,887 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) [2021-05-21 19:59:57,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1404 states to 1404 states and 4280 transitions. [2021-05-21 19:59:57,889 INFO L78 Accepts]: Start accepts. Automaton has 1404 states and 4280 transitions. Word has length 26 [2021-05-21 19:59:57,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 19:59:57,889 INFO L482 AbstractCegarLoop]: Abstraction has 1404 states and 4280 transitions. [2021-05-21 19:59:57,889 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 19:59:57,889 INFO L276 IsEmpty]: Start isEmpty. Operand 1404 states and 4280 transitions. [2021-05-21 19:59:57,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 19:59:57,890 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 19:59:57,891 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 19:59:57,891 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2021-05-21 19:59:57,891 INFO L430 AbstractCegarLoop]: === Iteration 70 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 19:59:57,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 19:59:57,891 INFO L82 PathProgramCache]: Analyzing trace with hash -2061970672, now seen corresponding path program 68 times [2021-05-21 19:59:57,891 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 19:59:57,891 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [613477339] [2021-05-21 19:59:57,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 19:59:57,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 19:59:57,953 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 19:59:57,953 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 19:59:57,953 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [613477339] [2021-05-21 19:59:57,953 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [613477339] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 19:59:57,953 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 19:59:57,953 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-21 19:59:57,953 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [227707388] [2021-05-21 19:59:57,954 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 19:59:57,954 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 19:59:57,954 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 19:59:57,954 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-05-21 19:59:57,954 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) [2021-05-21 19:59:58,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 19:59:58,108 INFO L93 Difference]: Finished difference Result 1599 states and 4818 transitions. [2021-05-21 19:59:58,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 19:59:58,108 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-05-21 19:59:58,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 19:59:58,110 INFO L225 Difference]: With dead ends: 1599 [2021-05-21 19:59:58,110 INFO L226 Difference]: Without dead ends: 1496 [2021-05-21 19:59:58,110 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 46.2ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-05-21 19:59:58,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1496 states. [2021-05-21 19:59:58,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1496 to 1402. [2021-05-21 19:59:58,123 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) [2021-05-21 19:59:58,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1402 states to 1402 states and 4280 transitions. [2021-05-21 19:59:58,125 INFO L78 Accepts]: Start accepts. Automaton has 1402 states and 4280 transitions. Word has length 26 [2021-05-21 19:59:58,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 19:59:58,125 INFO L482 AbstractCegarLoop]: Abstraction has 1402 states and 4280 transitions. [2021-05-21 19:59:58,125 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 19:59:58,125 INFO L276 IsEmpty]: Start isEmpty. Operand 1402 states and 4280 transitions. [2021-05-21 19:59:58,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 19:59:58,127 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 19:59:58,127 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 19:59:58,127 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2021-05-21 19:59:58,127 INFO L430 AbstractCegarLoop]: === Iteration 71 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 19:59:58,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 19:59:58,127 INFO L82 PathProgramCache]: Analyzing trace with hash -1557110056, now seen corresponding path program 69 times [2021-05-21 19:59:58,127 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 19:59:58,127 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1398115002] [2021-05-21 19:59:58,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 19:59:58,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 19:59:58,188 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 19:59:58,189 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 19:59:58,189 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1398115002] [2021-05-21 19:59:58,189 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1398115002] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 19:59:58,189 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 19:59:58,189 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-21 19:59:58,189 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [212104184] [2021-05-21 19:59:58,189 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 19:59:58,189 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 19:59:58,189 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 19:59:58,189 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-05-21 19:59:58,189 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) [2021-05-21 19:59:58,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 19:59:58,368 INFO L93 Difference]: Finished difference Result 1713 states and 5194 transitions. [2021-05-21 19:59:58,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 19:59:58,368 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-05-21 19:59:58,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 19:59:58,370 INFO L225 Difference]: With dead ends: 1713 [2021-05-21 19:59:58,370 INFO L226 Difference]: Without dead ends: 1634 [2021-05-21 19:59:58,370 INFO L777 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 [2021-05-21 19:59:58,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1634 states. [2021-05-21 19:59:58,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1634 to 1411. [2021-05-21 19:59:58,385 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) [2021-05-21 19:59:58,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1411 states to 1411 states and 4315 transitions. [2021-05-21 19:59:58,387 INFO L78 Accepts]: Start accepts. Automaton has 1411 states and 4315 transitions. Word has length 26 [2021-05-21 19:59:58,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 19:59:58,387 INFO L482 AbstractCegarLoop]: Abstraction has 1411 states and 4315 transitions. [2021-05-21 19:59:58,387 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) [2021-05-21 19:59:58,387 INFO L276 IsEmpty]: Start isEmpty. Operand 1411 states and 4315 transitions. [2021-05-21 19:59:58,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 19:59:58,388 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 19:59:58,388 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 19:59:58,389 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2021-05-21 19:59:58,389 INFO L430 AbstractCegarLoop]: === Iteration 72 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 19:59:58,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 19:59:58,389 INFO L82 PathProgramCache]: Analyzing trace with hash -2130507332, now seen corresponding path program 70 times [2021-05-21 19:59:58,389 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 19:59:58,389 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [308909432] [2021-05-21 19:59:58,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 19:59:58,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 19:59:58,446 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 19:59:58,447 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 19:59:58,447 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [308909432] [2021-05-21 19:59:58,447 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [308909432] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 19:59:58,447 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 19:59:58,447 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-21 19:59:58,447 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2112887446] [2021-05-21 19:59:58,447 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 19:59:58,447 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 19:59:58,447 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 19:59:58,447 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-05-21 19:59:58,447 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) [2021-05-21 19:59:58,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 19:59:58,609 INFO L93 Difference]: Finished difference Result 1734 states and 5229 transitions. [2021-05-21 19:59:58,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 19:59:58,609 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-05-21 19:59:58,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 19:59:58,611 INFO L225 Difference]: With dead ends: 1734 [2021-05-21 19:59:58,611 INFO L226 Difference]: Without dead ends: 1639 [2021-05-21 19:59:58,611 INFO L777 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 [2021-05-21 19:59:58,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1639 states. [2021-05-21 19:59:58,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1639 to 1415. [2021-05-21 19:59:58,625 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) [2021-05-21 19:59:58,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1415 states to 1415 states and 4326 transitions. [2021-05-21 19:59:58,626 INFO L78 Accepts]: Start accepts. Automaton has 1415 states and 4326 transitions. Word has length 26 [2021-05-21 19:59:58,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 19:59:58,626 INFO L482 AbstractCegarLoop]: Abstraction has 1415 states and 4326 transitions. [2021-05-21 19:59:58,627 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 19:59:58,627 INFO L276 IsEmpty]: Start isEmpty. Operand 1415 states and 4326 transitions. [2021-05-21 19:59:58,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 19:59:58,628 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 19:59:58,628 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 19:59:58,628 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2021-05-21 19:59:58,628 INFO L430 AbstractCegarLoop]: === Iteration 73 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 19:59:58,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 19:59:58,628 INFO L82 PathProgramCache]: Analyzing trace with hash 1345712694, now seen corresponding path program 71 times [2021-05-21 19:59:58,628 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 19:59:58,628 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [934448630] [2021-05-21 19:59:58,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 19:59:58,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 19:59:58,686 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 19:59:58,687 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 19:59:58,687 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [934448630] [2021-05-21 19:59:58,687 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [934448630] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 19:59:58,687 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 19:59:58,687 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-21 19:59:58,687 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [118324962] [2021-05-21 19:59:58,687 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 19:59:58,687 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 19:59:58,687 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 19:59:58,687 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-05-21 19:59:58,687 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) [2021-05-21 19:59:58,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 19:59:58,857 INFO L93 Difference]: Finished difference Result 1641 states and 4975 transitions. [2021-05-21 19:59:58,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 19:59:58,857 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 [2021-05-21 19:59:58,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 19:59:58,859 INFO L225 Difference]: With dead ends: 1641 [2021-05-21 19:59:58,859 INFO L226 Difference]: Without dead ends: 1551 [2021-05-21 19:59:58,859 INFO L777 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 [2021-05-21 19:59:58,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1551 states. [2021-05-21 19:59:58,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1551 to 1409. [2021-05-21 19:59:58,872 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) [2021-05-21 19:59:58,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1409 states to 1409 states and 4311 transitions. [2021-05-21 19:59:58,874 INFO L78 Accepts]: Start accepts. Automaton has 1409 states and 4311 transitions. Word has length 26 [2021-05-21 19:59:58,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 19:59:58,874 INFO L482 AbstractCegarLoop]: Abstraction has 1409 states and 4311 transitions. [2021-05-21 19:59:58,874 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) [2021-05-21 19:59:58,874 INFO L276 IsEmpty]: Start isEmpty. Operand 1409 states and 4311 transitions. [2021-05-21 19:59:58,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 19:59:58,876 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 19:59:58,876 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 19:59:58,876 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2021-05-21 19:59:58,876 INFO L430 AbstractCegarLoop]: === Iteration 74 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 19:59:58,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 19:59:58,876 INFO L82 PathProgramCache]: Analyzing trace with hash 970699354, now seen corresponding path program 72 times [2021-05-21 19:59:58,876 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 19:59:58,876 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1947685758] [2021-05-21 19:59:58,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 19:59:58,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 19:59:58,952 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 19:59:58,952 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 19:59:58,952 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1947685758] [2021-05-21 19:59:58,952 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1947685758] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 19:59:58,952 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 19:59:58,952 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 19:59:58,952 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [93169642] [2021-05-21 19:59:58,953 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-21 19:59:58,953 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 19:59:58,953 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-21 19:59:58,953 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-05-21 19:59:58,953 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) [2021-05-21 19:59:59,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 19:59:59,081 INFO L93 Difference]: Finished difference Result 1735 states and 5254 transitions. [2021-05-21 19:59:59,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-21 19:59:59,081 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 [2021-05-21 19:59:59,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 19:59:59,083 INFO L225 Difference]: With dead ends: 1735 [2021-05-21 19:59:59,083 INFO L226 Difference]: Without dead ends: 1656 [2021-05-21 19:59:59,083 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 64.3ms TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-05-21 19:59:59,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1656 states. [2021-05-21 19:59:59,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1656 to 1445. [2021-05-21 19:59:59,096 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) [2021-05-21 19:59:59,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1445 states to 1445 states and 4418 transitions. [2021-05-21 19:59:59,098 INFO L78 Accepts]: Start accepts. Automaton has 1445 states and 4418 transitions. Word has length 26 [2021-05-21 19:59:59,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 19:59:59,098 INFO L482 AbstractCegarLoop]: Abstraction has 1445 states and 4418 transitions. [2021-05-21 19:59:59,098 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) [2021-05-21 19:59:59,098 INFO L276 IsEmpty]: Start isEmpty. Operand 1445 states and 4418 transitions. [2021-05-21 19:59:59,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 19:59:59,100 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 19:59:59,100 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 19:59:59,100 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2021-05-21 19:59:59,100 INFO L430 AbstractCegarLoop]: === Iteration 75 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 19:59:59,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 19:59:59,100 INFO L82 PathProgramCache]: Analyzing trace with hash 1840143962, now seen corresponding path program 73 times [2021-05-21 19:59:59,100 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 19:59:59,100 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1168789686] [2021-05-21 19:59:59,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 19:59:59,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 19:59:59,158 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 19:59:59,159 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 19:59:59,159 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1168789686] [2021-05-21 19:59:59,159 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1168789686] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 19:59:59,159 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 19:59:59,159 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-21 19:59:59,159 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1687736964] [2021-05-21 19:59:59,159 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 19:59:59,159 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 19:59:59,159 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 19:59:59,159 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-05-21 19:59:59,159 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) [2021-05-21 19:59:59,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 19:59:59,314 INFO L93 Difference]: Finished difference Result 1792 states and 5392 transitions. [2021-05-21 19:59:59,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 19:59:59,314 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 [2021-05-21 19:59:59,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 19:59:59,316 INFO L225 Difference]: With dead ends: 1792 [2021-05-21 19:59:59,316 INFO L226 Difference]: Without dead ends: 1611 [2021-05-21 19:59:59,316 INFO L777 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 [2021-05-21 19:59:59,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1611 states. [2021-05-21 19:59:59,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1611 to 1435. [2021-05-21 19:59:59,329 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) [2021-05-21 19:59:59,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1435 states to 1435 states and 4394 transitions. [2021-05-21 19:59:59,331 INFO L78 Accepts]: Start accepts. Automaton has 1435 states and 4394 transitions. Word has length 26 [2021-05-21 19:59:59,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 19:59:59,331 INFO L482 AbstractCegarLoop]: Abstraction has 1435 states and 4394 transitions. [2021-05-21 19:59:59,331 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) [2021-05-21 19:59:59,331 INFO L276 IsEmpty]: Start isEmpty. Operand 1435 states and 4394 transitions. [2021-05-21 19:59:59,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 19:59:59,333 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 19:59:59,333 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 19:59:59,333 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2021-05-21 19:59:59,333 INFO L430 AbstractCegarLoop]: === Iteration 76 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 19:59:59,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 19:59:59,333 INFO L82 PathProgramCache]: Analyzing trace with hash -747041416, now seen corresponding path program 74 times [2021-05-21 19:59:59,333 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 19:59:59,333 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1684678234] [2021-05-21 19:59:59,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 19:59:59,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 19:59:59,391 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 19:59:59,391 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 19:59:59,391 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1684678234] [2021-05-21 19:59:59,391 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1684678234] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 19:59:59,392 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 19:59:59,392 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-21 19:59:59,392 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [777226562] [2021-05-21 19:59:59,392 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 19:59:59,392 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 19:59:59,392 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 19:59:59,392 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-05-21 19:59:59,392 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) [2021-05-21 19:59:59,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 19:59:59,556 INFO L93 Difference]: Finished difference Result 1663 states and 5025 transitions. [2021-05-21 19:59:59,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 19:59:59,556 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-05-21 19:59:59,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 19:59:59,558 INFO L225 Difference]: With dead ends: 1663 [2021-05-21 19:59:59,558 INFO L226 Difference]: Without dead ends: 1584 [2021-05-21 19:59:59,559 INFO L777 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 [2021-05-21 19:59:59,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1584 states. [2021-05-21 19:59:59,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1584 to 1437. [2021-05-21 19:59:59,574 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) [2021-05-21 19:59:59,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1437 states to 1437 states and 4401 transitions. [2021-05-21 19:59:59,576 INFO L78 Accepts]: Start accepts. Automaton has 1437 states and 4401 transitions. Word has length 26 [2021-05-21 19:59:59,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 19:59:59,576 INFO L482 AbstractCegarLoop]: Abstraction has 1437 states and 4401 transitions. [2021-05-21 19:59:59,577 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) [2021-05-21 19:59:59,577 INFO L276 IsEmpty]: Start isEmpty. Operand 1437 states and 4401 transitions. [2021-05-21 19:59:59,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 19:59:59,578 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 19:59:59,578 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 19:59:59,578 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2021-05-21 19:59:59,578 INFO L430 AbstractCegarLoop]: === Iteration 77 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 19:59:59,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 19:59:59,578 INFO L82 PathProgramCache]: Analyzing trace with hash 122403192, now seen corresponding path program 75 times [2021-05-21 19:59:59,578 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 19:59:59,579 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1379259205] [2021-05-21 19:59:59,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 19:59:59,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 19:59:59,634 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 19:59:59,634 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 19:59:59,634 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1379259205] [2021-05-21 19:59:59,634 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1379259205] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 19:59:59,634 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 19:59:59,634 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-21 19:59:59,634 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1335796093] [2021-05-21 19:59:59,634 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 19:59:59,634 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 19:59:59,634 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 19:59:59,635 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-05-21 19:59:59,635 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) [2021-05-21 19:59:59,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 19:59:59,794 INFO L93 Difference]: Finished difference Result 1626 states and 4884 transitions. [2021-05-21 19:59:59,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 19:59:59,794 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-05-21 19:59:59,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 19:59:59,796 INFO L225 Difference]: With dead ends: 1626 [2021-05-21 19:59:59,796 INFO L226 Difference]: Without dead ends: 1531 [2021-05-21 19:59:59,796 INFO L777 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 [2021-05-21 19:59:59,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1531 states. [2021-05-21 19:59:59,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1531 to 1451. [2021-05-21 19:59:59,810 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) [2021-05-21 19:59:59,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1451 states to 1451 states and 4438 transitions. [2021-05-21 19:59:59,812 INFO L78 Accepts]: Start accepts. Automaton has 1451 states and 4438 transitions. Word has length 26 [2021-05-21 19:59:59,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 19:59:59,812 INFO L482 AbstractCegarLoop]: Abstraction has 1451 states and 4438 transitions. [2021-05-21 19:59:59,812 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) [2021-05-21 19:59:59,812 INFO L276 IsEmpty]: Start isEmpty. Operand 1451 states and 4438 transitions. [2021-05-21 19:59:59,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 19:59:59,813 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 19:59:59,813 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 19:59:59,814 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2021-05-21 19:59:59,814 INFO L430 AbstractCegarLoop]: === Iteration 78 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 19:59:59,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 19:59:59,814 INFO L82 PathProgramCache]: Analyzing trace with hash -1919705314, now seen corresponding path program 76 times [2021-05-21 19:59:59,814 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 19:59:59,814 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [189278625] [2021-05-21 19:59:59,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 19:59:59,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 19:59:59,864 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 19:59:59,865 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 19:59:59,865 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [189278625] [2021-05-21 19:59:59,865 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [189278625] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 19:59:59,865 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 19:59:59,865 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 19:59:59,865 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1239609744] [2021-05-21 19:59:59,865 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-21 19:59:59,865 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 19:59:59,865 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-21 19:59:59,865 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-05-21 19:59:59,865 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) [2021-05-21 19:59:59,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 19:59:59,991 INFO L93 Difference]: Finished difference Result 1742 states and 5269 transitions. [2021-05-21 19:59:59,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-21 19:59:59,991 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 [2021-05-21 19:59:59,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 19:59:59,993 INFO L225 Difference]: With dead ends: 1742 [2021-05-21 19:59:59,993 INFO L226 Difference]: Without dead ends: 1653 [2021-05-21 19:59:59,993 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 37.7ms TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-05-21 19:59:59,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1653 states. [2021-05-21 20:00:00,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1653 to 1461. [2021-05-21 20:00:00,012 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) [2021-05-21 20:00:00,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1461 states to 1461 states and 4467 transitions. [2021-05-21 20:00:00,014 INFO L78 Accepts]: Start accepts. Automaton has 1461 states and 4467 transitions. Word has length 26 [2021-05-21 20:00:00,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:00:00,014 INFO L482 AbstractCegarLoop]: Abstraction has 1461 states and 4467 transitions. [2021-05-21 20:00:00,014 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) [2021-05-21 20:00:00,014 INFO L276 IsEmpty]: Start isEmpty. Operand 1461 states and 4467 transitions. [2021-05-21 20:00:00,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 20:00:00,016 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:00:00,016 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:00:00,016 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2021-05-21 20:00:00,017 INFO L430 AbstractCegarLoop]: === Iteration 79 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 20:00:00,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:00:00,017 INFO L82 PathProgramCache]: Analyzing trace with hash -1333154466, now seen corresponding path program 77 times [2021-05-21 20:00:00,017 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:00:00,017 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [800037570] [2021-05-21 20:00:00,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:00:00,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:00:00,069 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:00:00,070 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:00:00,070 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [800037570] [2021-05-21 20:00:00,070 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [800037570] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:00:00,070 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:00:00,070 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-21 20:00:00,070 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [13270552] [2021-05-21 20:00:00,070 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:00:00,070 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:00:00,070 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:00:00,070 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:00:00,070 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) [2021-05-21 20:00:00,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:00:00,247 INFO L93 Difference]: Finished difference Result 1678 states and 5043 transitions. [2021-05-21 20:00:00,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:00:00,247 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-05-21 20:00:00,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:00:00,249 INFO L225 Difference]: With dead ends: 1678 [2021-05-21 20:00:00,249 INFO L226 Difference]: Without dead ends: 1590 [2021-05-21 20:00:00,249 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 43.9ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:00:00,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1590 states. [2021-05-21 20:00:00,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1590 to 1461. [2021-05-21 20:00:00,272 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) [2021-05-21 20:00:00,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1461 states to 1461 states and 4467 transitions. [2021-05-21 20:00:00,274 INFO L78 Accepts]: Start accepts. Automaton has 1461 states and 4467 transitions. Word has length 26 [2021-05-21 20:00:00,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:00:00,274 INFO L482 AbstractCegarLoop]: Abstraction has 1461 states and 4467 transitions. [2021-05-21 20:00:00,274 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:00:00,274 INFO L276 IsEmpty]: Start isEmpty. Operand 1461 states and 4467 transitions. [2021-05-21 20:00:00,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 20:00:00,276 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:00:00,276 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:00:00,276 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2021-05-21 20:00:00,276 INFO L430 AbstractCegarLoop]: === Iteration 80 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 20:00:00,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:00:00,277 INFO L82 PathProgramCache]: Analyzing trace with hash -2045222308, now seen corresponding path program 78 times [2021-05-21 20:00:00,277 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:00:00,277 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [148187785] [2021-05-21 20:00:00,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:00:00,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:00:00,341 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:00:00,341 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:00:00,341 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [148187785] [2021-05-21 20:00:00,341 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [148187785] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:00:00,341 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:00:00,341 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-21 20:00:00,341 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [304100042] [2021-05-21 20:00:00,341 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:00:00,342 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:00:00,342 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:00:00,342 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:00:00,342 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) [2021-05-21 20:00:00,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:00:00,499 INFO L93 Difference]: Finished difference Result 1816 states and 5475 transitions. [2021-05-21 20:00:00,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:00:00,499 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-05-21 20:00:00,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:00:00,501 INFO L225 Difference]: With dead ends: 1816 [2021-05-21 20:00:00,501 INFO L226 Difference]: Without dead ends: 1722 [2021-05-21 20:00:00,501 INFO L777 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 [2021-05-21 20:00:00,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1722 states. [2021-05-21 20:00:00,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1722 to 1485. [2021-05-21 20:00:00,515 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) [2021-05-21 20:00:00,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1485 states to 1485 states and 4546 transitions. [2021-05-21 20:00:00,517 INFO L78 Accepts]: Start accepts. Automaton has 1485 states and 4546 transitions. Word has length 26 [2021-05-21 20:00:00,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:00:00,517 INFO L482 AbstractCegarLoop]: Abstraction has 1485 states and 4546 transitions. [2021-05-21 20:00:00,517 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:00:00,517 INFO L276 IsEmpty]: Start isEmpty. Operand 1485 states and 4546 transitions. [2021-05-21 20:00:00,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 20:00:00,518 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:00:00,518 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:00:00,519 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2021-05-21 20:00:00,519 INFO L430 AbstractCegarLoop]: === Iteration 81 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 20:00:00,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:00:00,519 INFO L82 PathProgramCache]: Analyzing trace with hash 1286512978, now seen corresponding path program 79 times [2021-05-21 20:00:00,519 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:00:00,519 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1660915313] [2021-05-21 20:00:00,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:00:00,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:00:00,568 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:00:00,568 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:00:00,568 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1660915313] [2021-05-21 20:00:00,568 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1660915313] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:00:00,568 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:00:00,568 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:00:00,568 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1247864281] [2021-05-21 20:00:00,569 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-21 20:00:00,569 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:00:00,569 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-21 20:00:00,569 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-05-21 20:00:00,569 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) [2021-05-21 20:00:00,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:00:00,694 INFO L93 Difference]: Finished difference Result 1851 states and 5576 transitions. [2021-05-21 20:00:00,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-21 20:00:00,694 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 [2021-05-21 20:00:00,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:00:00,696 INFO L225 Difference]: With dead ends: 1851 [2021-05-21 20:00:00,696 INFO L226 Difference]: Without dead ends: 1679 [2021-05-21 20:00:00,696 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 37.4ms TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-05-21 20:00:00,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1679 states. [2021-05-21 20:00:00,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1679 to 1453. [2021-05-21 20:00:00,709 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) [2021-05-21 20:00:00,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1453 states to 1453 states and 4436 transitions. [2021-05-21 20:00:00,711 INFO L78 Accepts]: Start accepts. Automaton has 1453 states and 4436 transitions. Word has length 26 [2021-05-21 20:00:00,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:00:00,711 INFO L482 AbstractCegarLoop]: Abstraction has 1453 states and 4436 transitions. [2021-05-21 20:00:00,711 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) [2021-05-21 20:00:00,711 INFO L276 IsEmpty]: Start isEmpty. Operand 1453 states and 4436 transitions. [2021-05-21 20:00:00,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 20:00:00,713 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:00:00,713 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:00:00,713 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2021-05-21 20:00:00,713 INFO L430 AbstractCegarLoop]: === Iteration 82 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 20:00:00,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:00:00,713 INFO L82 PathProgramCache]: Analyzing trace with hash -292918668, now seen corresponding path program 80 times [2021-05-21 20:00:00,713 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:00:00,713 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1712999067] [2021-05-21 20:00:00,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:00:00,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:00:00,783 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:00:00,783 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:00:00,783 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1712999067] [2021-05-21 20:00:00,783 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1712999067] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:00:00,783 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:00:00,783 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-21 20:00:00,783 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [804590357] [2021-05-21 20:00:00,783 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:00:00,783 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:00:00,783 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:00:00,784 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:00:00,784 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) [2021-05-21 20:00:00,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:00:00,940 INFO L93 Difference]: Finished difference Result 1732 states and 5178 transitions. [2021-05-21 20:00:00,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:00:00,940 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-05-21 20:00:00,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:00:00,942 INFO L225 Difference]: With dead ends: 1732 [2021-05-21 20:00:00,942 INFO L226 Difference]: Without dead ends: 1593 [2021-05-21 20:00:00,942 INFO L777 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 [2021-05-21 20:00:00,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1593 states. [2021-05-21 20:00:00,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1593 to 1443. [2021-05-21 20:00:00,955 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) [2021-05-21 20:00:00,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1443 states to 1443 states and 4396 transitions. [2021-05-21 20:00:00,957 INFO L78 Accepts]: Start accepts. Automaton has 1443 states and 4396 transitions. Word has length 26 [2021-05-21 20:00:00,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:00:00,957 INFO L482 AbstractCegarLoop]: Abstraction has 1443 states and 4396 transitions. [2021-05-21 20:00:00,957 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:00:00,957 INFO L276 IsEmpty]: Start isEmpty. Operand 1443 states and 4396 transitions. [2021-05-21 20:00:00,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 20:00:00,965 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:00:00,965 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:00:00,965 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2021-05-21 20:00:00,965 INFO L430 AbstractCegarLoop]: === Iteration 83 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 20:00:00,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:00:00,966 INFO L82 PathProgramCache]: Analyzing trace with hash -1145380296, now seen corresponding path program 81 times [2021-05-21 20:00:00,966 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:00:00,966 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [176929096] [2021-05-21 20:00:00,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:00:00,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:00:01,015 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:00:01,015 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:00:01,015 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [176929096] [2021-05-21 20:00:01,015 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [176929096] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:00:01,015 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:00:01,015 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:00:01,015 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [681420776] [2021-05-21 20:00:01,015 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-21 20:00:01,015 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:00:01,015 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-21 20:00:01,015 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-05-21 20:00:01,015 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) [2021-05-21 20:00:01,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:00:01,140 INFO L93 Difference]: Finished difference Result 1745 states and 5234 transitions. [2021-05-21 20:00:01,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-21 20:00:01,140 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 [2021-05-21 20:00:01,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:00:01,142 INFO L225 Difference]: With dead ends: 1745 [2021-05-21 20:00:01,142 INFO L226 Difference]: Without dead ends: 1660 [2021-05-21 20:00:01,142 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 35.9ms TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-05-21 20:00:01,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1660 states. [2021-05-21 20:00:01,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1660 to 1481. [2021-05-21 20:00:01,156 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) [2021-05-21 20:00:01,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1481 states to 1481 states and 4515 transitions. [2021-05-21 20:00:01,158 INFO L78 Accepts]: Start accepts. Automaton has 1481 states and 4515 transitions. Word has length 26 [2021-05-21 20:00:01,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:00:01,158 INFO L482 AbstractCegarLoop]: Abstraction has 1481 states and 4515 transitions. [2021-05-21 20:00:01,158 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) [2021-05-21 20:00:01,158 INFO L276 IsEmpty]: Start isEmpty. Operand 1481 states and 4515 transitions. [2021-05-21 20:00:01,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 20:00:01,159 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:00:01,159 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:00:01,159 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2021-05-21 20:00:01,159 INFO L430 AbstractCegarLoop]: === Iteration 84 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 20:00:01,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:00:01,160 INFO L82 PathProgramCache]: Analyzing trace with hash -275935688, now seen corresponding path program 82 times [2021-05-21 20:00:01,160 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:00:01,160 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2059946382] [2021-05-21 20:00:01,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:00:01,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:00:01,213 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:00:01,213 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:00:01,213 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2059946382] [2021-05-21 20:00:01,213 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2059946382] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:00:01,213 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:00:01,213 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-21 20:00:01,213 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1675527405] [2021-05-21 20:00:01,213 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:00:01,213 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:00:01,213 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:00:01,214 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:00:01,214 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) [2021-05-21 20:00:01,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:00:01,366 INFO L93 Difference]: Finished difference Result 1788 states and 5355 transitions. [2021-05-21 20:00:01,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:00:01,366 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 [2021-05-21 20:00:01,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:00:01,368 INFO L225 Difference]: With dead ends: 1788 [2021-05-21 20:00:01,368 INFO L226 Difference]: Without dead ends: 1595 [2021-05-21 20:00:01,368 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 42.1ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:00:01,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1595 states. [2021-05-21 20:00:01,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1595 to 1441. [2021-05-21 20:00:01,388 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) [2021-05-21 20:00:01,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1441 states to 1441 states and 4389 transitions. [2021-05-21 20:00:01,389 INFO L78 Accepts]: Start accepts. Automaton has 1441 states and 4389 transitions. Word has length 26 [2021-05-21 20:00:01,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:00:01,390 INFO L482 AbstractCegarLoop]: Abstraction has 1441 states and 4389 transitions. [2021-05-21 20:00:01,390 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:00:01,390 INFO L276 IsEmpty]: Start isEmpty. Operand 1441 states and 4389 transitions. [2021-05-21 20:00:01,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 20:00:01,391 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:00:01,391 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:00:01,391 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2021-05-21 20:00:01,391 INFO L430 AbstractCegarLoop]: === Iteration 85 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 20:00:01,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:00:01,391 INFO L82 PathProgramCache]: Analyzing trace with hash -263995784, now seen corresponding path program 83 times [2021-05-21 20:00:01,392 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:00:01,392 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2055666379] [2021-05-21 20:00:01,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:00:01,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:00:01,445 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:00:01,446 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:00:01,446 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2055666379] [2021-05-21 20:00:01,446 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2055666379] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:00:01,446 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:00:01,446 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-21 20:00:01,446 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308947995] [2021-05-21 20:00:01,446 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:00:01,446 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:00:01,446 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:00:01,446 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:00:01,446 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) [2021-05-21 20:00:01,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:00:01,603 INFO L93 Difference]: Finished difference Result 1658 states and 4979 transitions. [2021-05-21 20:00:01,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:00:01,603 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 [2021-05-21 20:00:01,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:00:01,605 INFO L225 Difference]: With dead ends: 1658 [2021-05-21 20:00:01,605 INFO L226 Difference]: Without dead ends: 1573 [2021-05-21 20:00:01,605 INFO L777 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 [2021-05-21 20:00:01,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1573 states. [2021-05-21 20:00:01,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1573 to 1444. [2021-05-21 20:00:01,625 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) [2021-05-21 20:00:01,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1444 states to 1444 states and 4397 transitions. [2021-05-21 20:00:01,627 INFO L78 Accepts]: Start accepts. Automaton has 1444 states and 4397 transitions. Word has length 26 [2021-05-21 20:00:01,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:00:01,627 INFO L482 AbstractCegarLoop]: Abstraction has 1444 states and 4397 transitions. [2021-05-21 20:00:01,627 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:00:01,627 INFO L276 IsEmpty]: Start isEmpty. Operand 1444 states and 4397 transitions. [2021-05-21 20:00:01,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 20:00:01,628 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:00:01,628 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:00:01,629 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2021-05-21 20:00:01,629 INFO L430 AbstractCegarLoop]: === Iteration 86 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 20:00:01,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:00:01,629 INFO L82 PathProgramCache]: Analyzing trace with hash 605448824, now seen corresponding path program 84 times [2021-05-21 20:00:01,629 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:00:01,629 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1619985926] [2021-05-21 20:00:01,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:00:01,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:00:01,691 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:00:01,692 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:00:01,692 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1619985926] [2021-05-21 20:00:01,692 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1619985926] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:00:01,692 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:00:01,692 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-21 20:00:01,692 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551065209] [2021-05-21 20:00:01,692 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:00:01,692 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:00:01,693 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:00:01,693 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:00:01,693 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) [2021-05-21 20:00:01,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:00:01,868 INFO L93 Difference]: Finished difference Result 1729 states and 5190 transitions. [2021-05-21 20:00:01,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:00:01,869 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-05-21 20:00:01,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:00:01,871 INFO L225 Difference]: With dead ends: 1729 [2021-05-21 20:00:01,871 INFO L226 Difference]: Without dead ends: 1634 [2021-05-21 20:00:01,871 INFO L777 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 [2021-05-21 20:00:01,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1634 states. [2021-05-21 20:00:01,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1634 to 1464. [2021-05-21 20:00:01,885 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) [2021-05-21 20:00:01,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1464 states to 1464 states and 4456 transitions. [2021-05-21 20:00:01,887 INFO L78 Accepts]: Start accepts. Automaton has 1464 states and 4456 transitions. Word has length 26 [2021-05-21 20:00:01,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:00:01,887 INFO L482 AbstractCegarLoop]: Abstraction has 1464 states and 4456 transitions. [2021-05-21 20:00:01,887 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:00:01,887 INFO L276 IsEmpty]: Start isEmpty. Operand 1464 states and 4456 transitions. [2021-05-21 20:00:01,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 20:00:01,888 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:00:01,888 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:00:01,888 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2021-05-21 20:00:01,888 INFO L430 AbstractCegarLoop]: === Iteration 87 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 20:00:01,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:00:01,889 INFO L82 PathProgramCache]: Analyzing trace with hash 1417651412, now seen corresponding path program 85 times [2021-05-21 20:00:01,889 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:00:01,889 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2125390877] [2021-05-21 20:00:01,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:00:01,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:00:01,948 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:00:01,948 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:00:01,948 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2125390877] [2021-05-21 20:00:01,948 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2125390877] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:00:01,948 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:00:01,949 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-21 20:00:01,949 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [351489037] [2021-05-21 20:00:01,949 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:00:01,949 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:00:01,949 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:00:01,949 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:00:01,949 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) [2021-05-21 20:00:02,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:00:02,117 INFO L93 Difference]: Finished difference Result 1739 states and 5230 transitions. [2021-05-21 20:00:02,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:00:02,117 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-05-21 20:00:02,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:00:02,119 INFO L225 Difference]: With dead ends: 1739 [2021-05-21 20:00:02,119 INFO L226 Difference]: Without dead ends: 1609 [2021-05-21 20:00:02,119 INFO L777 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 [2021-05-21 20:00:02,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1609 states. [2021-05-21 20:00:02,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1609 to 1469. [2021-05-21 20:00:02,132 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) [2021-05-21 20:00:02,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1469 states to 1469 states and 4454 transitions. [2021-05-21 20:00:02,134 INFO L78 Accepts]: Start accepts. Automaton has 1469 states and 4454 transitions. Word has length 26 [2021-05-21 20:00:02,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:00:02,134 INFO L482 AbstractCegarLoop]: Abstraction has 1469 states and 4454 transitions. [2021-05-21 20:00:02,134 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:00:02,134 INFO L276 IsEmpty]: Start isEmpty. Operand 1469 states and 4454 transitions. [2021-05-21 20:00:02,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 20:00:02,135 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:00:02,135 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:00:02,135 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2021-05-21 20:00:02,136 INFO L430 AbstractCegarLoop]: === Iteration 88 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 20:00:02,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:00:02,136 INFO L82 PathProgramCache]: Analyzing trace with hash -472077802, now seen corresponding path program 86 times [2021-05-21 20:00:02,136 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:00:02,136 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1808275563] [2021-05-21 20:00:02,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:00:02,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:00:02,298 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:00:02,298 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:00:02,298 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1808275563] [2021-05-21 20:00:02,299 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1808275563] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:00:02,299 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:00:02,299 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-21 20:00:02,299 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1727570404] [2021-05-21 20:00:02,299 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:00:02,299 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:00:02,299 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:00:02,299 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:00:02,299 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) [2021-05-21 20:00:02,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:00:02,477 INFO L93 Difference]: Finished difference Result 1598 states and 4788 transitions. [2021-05-21 20:00:02,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:00:02,477 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-05-21 20:00:02,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:00:02,479 INFO L225 Difference]: With dead ends: 1598 [2021-05-21 20:00:02,479 INFO L226 Difference]: Without dead ends: 1519 [2021-05-21 20:00:02,479 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 148.8ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:00:02,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1519 states. [2021-05-21 20:00:02,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1519 to 1469. [2021-05-21 20:00:02,493 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) [2021-05-21 20:00:02,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1469 states to 1469 states and 4454 transitions. [2021-05-21 20:00:02,495 INFO L78 Accepts]: Start accepts. Automaton has 1469 states and 4454 transitions. Word has length 26 [2021-05-21 20:00:02,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:00:02,495 INFO L482 AbstractCegarLoop]: Abstraction has 1469 states and 4454 transitions. [2021-05-21 20:00:02,495 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:00:02,495 INFO L276 IsEmpty]: Start isEmpty. Operand 1469 states and 4454 transitions. [2021-05-21 20:00:02,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 20:00:02,496 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:00:02,496 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:00:02,496 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2021-05-21 20:00:02,496 INFO L430 AbstractCegarLoop]: === Iteration 89 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 20:00:02,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:00:02,497 INFO L82 PathProgramCache]: Analyzing trace with hash 397366806, now seen corresponding path program 87 times [2021-05-21 20:00:02,497 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:00:02,497 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [159165367] [2021-05-21 20:00:02,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:00:02,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:00:02,552 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:00:02,552 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:00:02,552 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [159165367] [2021-05-21 20:00:02,552 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [159165367] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:00:02,552 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:00:02,552 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-21 20:00:02,552 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1708313269] [2021-05-21 20:00:02,553 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:00:02,553 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:00:02,553 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:00:02,553 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:00:02,553 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) [2021-05-21 20:00:02,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:00:02,725 INFO L93 Difference]: Finished difference Result 1617 states and 4837 transitions. [2021-05-21 20:00:02,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:00:02,725 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 [2021-05-21 20:00:02,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:00:02,727 INFO L225 Difference]: With dead ends: 1617 [2021-05-21 20:00:02,727 INFO L226 Difference]: Without dead ends: 1522 [2021-05-21 20:00:02,727 INFO L777 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 [2021-05-21 20:00:02,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1522 states. [2021-05-21 20:00:02,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1522 to 1471. [2021-05-21 20:00:02,741 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) [2021-05-21 20:00:02,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1471 states to 1471 states and 4459 transitions. [2021-05-21 20:00:02,743 INFO L78 Accepts]: Start accepts. Automaton has 1471 states and 4459 transitions. Word has length 26 [2021-05-21 20:00:02,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:00:02,743 INFO L482 AbstractCegarLoop]: Abstraction has 1471 states and 4459 transitions. [2021-05-21 20:00:02,743 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:00:02,743 INFO L276 IsEmpty]: Start isEmpty. Operand 1471 states and 4459 transitions. [2021-05-21 20:00:02,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 20:00:02,745 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:00:02,745 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:00:02,745 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2021-05-21 20:00:02,745 INFO L430 AbstractCegarLoop]: === Iteration 90 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 20:00:02,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:00:02,745 INFO L82 PathProgramCache]: Analyzing trace with hash -1071344424, now seen corresponding path program 88 times [2021-05-21 20:00:02,745 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:00:02,745 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1719506322] [2021-05-21 20:00:02,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:00:02,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:00:02,813 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:00:02,813 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:00:02,813 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1719506322] [2021-05-21 20:00:02,813 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1719506322] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:00:02,813 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:00:02,814 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-21 20:00:02,814 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [85728159] [2021-05-21 20:00:02,814 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:00:02,814 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:00:02,814 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:00:02,814 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:00:02,814 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) [2021-05-21 20:00:02,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:00:02,975 INFO L93 Difference]: Finished difference Result 1682 states and 5045 transitions. [2021-05-21 20:00:02,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:00:02,976 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-05-21 20:00:02,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:00:02,977 INFO L225 Difference]: With dead ends: 1682 [2021-05-21 20:00:02,977 INFO L226 Difference]: Without dead ends: 1603 [2021-05-21 20:00:02,978 INFO L777 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 [2021-05-21 20:00:02,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1603 states. [2021-05-21 20:00:02,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1603 to 1470. [2021-05-21 20:00:02,991 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) [2021-05-21 20:00:02,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1470 states to 1470 states and 4455 transitions. [2021-05-21 20:00:02,993 INFO L78 Accepts]: Start accepts. Automaton has 1470 states and 4455 transitions. Word has length 26 [2021-05-21 20:00:02,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:00:02,993 INFO L482 AbstractCegarLoop]: Abstraction has 1470 states and 4455 transitions. [2021-05-21 20:00:02,993 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:00:02,993 INFO L276 IsEmpty]: Start isEmpty. Operand 1470 states and 4455 transitions. [2021-05-21 20:00:02,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 20:00:02,994 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:00:02,994 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:00:02,994 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2021-05-21 20:00:02,994 INFO L430 AbstractCegarLoop]: === Iteration 91 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 20:00:02,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:00:02,995 INFO L82 PathProgramCache]: Analyzing trace with hash -1644741700, now seen corresponding path program 89 times [2021-05-21 20:00:02,995 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:00:02,995 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [682522169] [2021-05-21 20:00:02,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:00:03,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:00:03,052 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:00:03,053 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:00:03,053 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [682522169] [2021-05-21 20:00:03,053 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [682522169] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:00:03,053 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:00:03,053 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-21 20:00:03,053 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666768161] [2021-05-21 20:00:03,053 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:00:03,053 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:00:03,053 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:00:03,053 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:00:03,053 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) [2021-05-21 20:00:03,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:00:03,219 INFO L93 Difference]: Finished difference Result 1669 states and 5007 transitions. [2021-05-21 20:00:03,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:00:03,219 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-05-21 20:00:03,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:00:03,221 INFO L225 Difference]: With dead ends: 1669 [2021-05-21 20:00:03,221 INFO L226 Difference]: Without dead ends: 1580 [2021-05-21 20:00:03,221 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 43.4ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:00:03,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1580 states. [2021-05-21 20:00:03,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1580 to 1469. [2021-05-21 20:00:03,234 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) [2021-05-21 20:00:03,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1469 states to 1469 states and 4449 transitions. [2021-05-21 20:00:03,236 INFO L78 Accepts]: Start accepts. Automaton has 1469 states and 4449 transitions. Word has length 26 [2021-05-21 20:00:03,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:00:03,236 INFO L482 AbstractCegarLoop]: Abstraction has 1469 states and 4449 transitions. [2021-05-21 20:00:03,236 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) [2021-05-21 20:00:03,236 INFO L276 IsEmpty]: Start isEmpty. Operand 1469 states and 4449 transitions. [2021-05-21 20:00:03,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 20:00:03,238 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:00:03,238 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:00:03,238 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2021-05-21 20:00:03,238 INFO L430 AbstractCegarLoop]: === Iteration 92 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 20:00:03,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:00:03,238 INFO L82 PathProgramCache]: Analyzing trace with hash -1058190852, now seen corresponding path program 90 times [2021-05-21 20:00:03,238 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:00:03,238 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [29225936] [2021-05-21 20:00:03,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:00:03,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:00:03,292 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:00:03,292 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:00:03,292 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [29225936] [2021-05-21 20:00:03,292 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [29225936] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:00:03,292 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:00:03,292 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-21 20:00:03,292 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [89188463] [2021-05-21 20:00:03,292 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:00:03,292 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:00:03,293 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:00:03,293 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:00:03,293 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) [2021-05-21 20:00:03,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:00:03,452 INFO L93 Difference]: Finished difference Result 1654 states and 4951 transitions. [2021-05-21 20:00:03,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:00:03,452 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-05-21 20:00:03,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:00:03,455 INFO L225 Difference]: With dead ends: 1654 [2021-05-21 20:00:03,455 INFO L226 Difference]: Without dead ends: 1566 [2021-05-21 20:00:03,455 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 43.9ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:00:03,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1566 states. [2021-05-21 20:00:03,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1566 to 1470. [2021-05-21 20:00:03,468 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) [2021-05-21 20:00:03,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1470 states to 1470 states and 4453 transitions. [2021-05-21 20:00:03,470 INFO L78 Accepts]: Start accepts. Automaton has 1470 states and 4453 transitions. Word has length 26 [2021-05-21 20:00:03,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:00:03,471 INFO L482 AbstractCegarLoop]: Abstraction has 1470 states and 4453 transitions. [2021-05-21 20:00:03,471 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:00:03,471 INFO L276 IsEmpty]: Start isEmpty. Operand 1470 states and 4453 transitions. [2021-05-21 20:00:03,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 20:00:03,472 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:00:03,472 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:00:03,472 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2021-05-21 20:00:03,472 INFO L430 AbstractCegarLoop]: === Iteration 93 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 20:00:03,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:00:03,472 INFO L82 PathProgramCache]: Analyzing trace with hash -1770258694, now seen corresponding path program 91 times [2021-05-21 20:00:03,473 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:00:03,473 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [816160213] [2021-05-21 20:00:03,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:00:03,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:00:03,542 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:00:03,542 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:00:03,542 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [816160213] [2021-05-21 20:00:03,542 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [816160213] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:00:03,542 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:00:03,542 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-21 20:00:03,542 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1587255577] [2021-05-21 20:00:03,542 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:00:03,542 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:00:03,543 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:00:03,543 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:00:03,543 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) [2021-05-21 20:00:03,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:00:03,709 INFO L93 Difference]: Finished difference Result 1673 states and 4993 transitions. [2021-05-21 20:00:03,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:00:03,709 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 [2021-05-21 20:00:03,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:00:03,711 INFO L225 Difference]: With dead ends: 1673 [2021-05-21 20:00:03,711 INFO L226 Difference]: Without dead ends: 1579 [2021-05-21 20:00:03,711 INFO L777 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 [2021-05-21 20:00:03,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1579 states. [2021-05-21 20:00:03,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1579 to 1475. [2021-05-21 20:00:03,725 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) [2021-05-21 20:00:03,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1475 states to 1475 states and 4474 transitions. [2021-05-21 20:00:03,727 INFO L78 Accepts]: Start accepts. Automaton has 1475 states and 4474 transitions. Word has length 26 [2021-05-21 20:00:03,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:00:03,727 INFO L482 AbstractCegarLoop]: Abstraction has 1475 states and 4474 transitions. [2021-05-21 20:00:03,727 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:00:03,727 INFO L276 IsEmpty]: Start isEmpty. Operand 1475 states and 4474 transitions. [2021-05-21 20:00:03,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 20:00:03,729 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:00:03,729 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:00:03,729 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2021-05-21 20:00:03,729 INFO L430 AbstractCegarLoop]: === Iteration 94 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 20:00:03,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:00:03,729 INFO L82 PathProgramCache]: Analyzing trace with hash -678885768, now seen corresponding path program 92 times [2021-05-21 20:00:03,729 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:00:03,729 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [909605652] [2021-05-21 20:00:03,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:00:03,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:00:03,787 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:00:03,787 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:00:03,787 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [909605652] [2021-05-21 20:00:03,787 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [909605652] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:00:03,787 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:00:03,788 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-21 20:00:03,788 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1732456003] [2021-05-21 20:00:03,788 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:00:03,788 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:00:03,788 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:00:03,788 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:00:03,788 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) [2021-05-21 20:00:03,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:00:03,954 INFO L93 Difference]: Finished difference Result 1627 states and 4876 transitions. [2021-05-21 20:00:03,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:00:03,955 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-05-21 20:00:03,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:00:03,957 INFO L225 Difference]: With dead ends: 1627 [2021-05-21 20:00:03,957 INFO L226 Difference]: Without dead ends: 1548 [2021-05-21 20:00:03,957 INFO L777 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 [2021-05-21 20:00:03,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1548 states. [2021-05-21 20:00:03,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1548 to 1475. [2021-05-21 20:00:03,970 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) [2021-05-21 20:00:03,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1475 states to 1475 states and 4474 transitions. [2021-05-21 20:00:03,972 INFO L78 Accepts]: Start accepts. Automaton has 1475 states and 4474 transitions. Word has length 26 [2021-05-21 20:00:03,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:00:03,972 INFO L482 AbstractCegarLoop]: Abstraction has 1475 states and 4474 transitions. [2021-05-21 20:00:03,972 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:00:03,972 INFO L276 IsEmpty]: Start isEmpty. Operand 1475 states and 4474 transitions. [2021-05-21 20:00:03,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 20:00:03,974 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:00:03,974 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:00:03,974 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2021-05-21 20:00:03,974 INFO L430 AbstractCegarLoop]: === Iteration 95 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 20:00:03,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:00:03,974 INFO L82 PathProgramCache]: Analyzing trace with hash 190558840, now seen corresponding path program 93 times [2021-05-21 20:00:03,974 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:00:03,974 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [706550652] [2021-05-21 20:00:03,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:00:03,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:00:04,043 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:00:04,043 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:00:04,043 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [706550652] [2021-05-21 20:00:04,044 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [706550652] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:00:04,044 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:00:04,044 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-21 20:00:04,044 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1276746657] [2021-05-21 20:00:04,044 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:00:04,044 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:00:04,044 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:00:04,044 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:00:04,044 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) [2021-05-21 20:00:04,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:00:04,210 INFO L93 Difference]: Finished difference Result 1646 states and 4929 transitions. [2021-05-21 20:00:04,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:00:04,210 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-05-21 20:00:04,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:00:04,212 INFO L225 Difference]: With dead ends: 1646 [2021-05-21 20:00:04,212 INFO L226 Difference]: Without dead ends: 1551 [2021-05-21 20:00:04,212 INFO L777 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 [2021-05-21 20:00:04,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1551 states. [2021-05-21 20:00:04,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1551 to 1478. [2021-05-21 20:00:04,226 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) [2021-05-21 20:00:04,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1478 states to 1478 states and 4482 transitions. [2021-05-21 20:00:04,227 INFO L78 Accepts]: Start accepts. Automaton has 1478 states and 4482 transitions. Word has length 26 [2021-05-21 20:00:04,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:00:04,228 INFO L482 AbstractCegarLoop]: Abstraction has 1478 states and 4482 transitions. [2021-05-21 20:00:04,228 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:00:04,228 INFO L276 IsEmpty]: Start isEmpty. Operand 1478 states and 4482 transitions. [2021-05-21 20:00:04,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 20:00:04,229 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:00:04,229 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:00:04,229 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2021-05-21 20:00:04,229 INFO L430 AbstractCegarLoop]: === Iteration 96 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 20:00:04,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:00:04,229 INFO L82 PathProgramCache]: Analyzing trace with hash 2111242710, now seen corresponding path program 94 times [2021-05-21 20:00:04,230 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:00:04,230 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [243136171] [2021-05-21 20:00:04,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:00:04,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:00:04,288 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:00:04,289 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:00:04,289 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [243136171] [2021-05-21 20:00:04,289 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [243136171] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:00:04,289 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:00:04,289 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-21 20:00:04,289 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1291911032] [2021-05-21 20:00:04,289 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:00:04,289 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:00:04,289 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:00:04,289 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:00:04,289 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) [2021-05-21 20:00:04,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:00:04,450 INFO L93 Difference]: Finished difference Result 1664 states and 4981 transitions. [2021-05-21 20:00:04,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:00:04,451 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-05-21 20:00:04,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:00:04,453 INFO L225 Difference]: With dead ends: 1664 [2021-05-21 20:00:04,453 INFO L226 Difference]: Without dead ends: 1579 [2021-05-21 20:00:04,453 INFO L777 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 [2021-05-21 20:00:04,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1579 states. [2021-05-21 20:00:04,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1579 to 1477. [2021-05-21 20:00:04,466 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) [2021-05-21 20:00:04,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1477 states to 1477 states and 4475 transitions. [2021-05-21 20:00:04,468 INFO L78 Accepts]: Start accepts. Automaton has 1477 states and 4475 transitions. Word has length 26 [2021-05-21 20:00:04,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:00:04,468 INFO L482 AbstractCegarLoop]: Abstraction has 1477 states and 4475 transitions. [2021-05-21 20:00:04,468 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) [2021-05-21 20:00:04,468 INFO L276 IsEmpty]: Start isEmpty. Operand 1477 states and 4475 transitions. [2021-05-21 20:00:04,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 20:00:04,469 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:00:04,469 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:00:04,469 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2021-05-21 20:00:04,469 INFO L430 AbstractCegarLoop]: === Iteration 97 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 20:00:04,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:00:04,470 INFO L82 PathProgramCache]: Analyzing trace with hash -63786894, now seen corresponding path program 95 times [2021-05-21 20:00:04,470 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:00:04,470 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [448333596] [2021-05-21 20:00:04,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:00:04,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:00:04,538 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:00:04,538 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:00:04,538 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [448333596] [2021-05-21 20:00:04,538 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [448333596] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:00:04,538 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:00:04,539 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-21 20:00:04,539 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746701704] [2021-05-21 20:00:04,539 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:00:04,539 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:00:04,539 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:00:04,539 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:00:04,539 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) [2021-05-21 20:00:04,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:00:04,698 INFO L93 Difference]: Finished difference Result 1654 states and 4965 transitions. [2021-05-21 20:00:04,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:00:04,698 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-05-21 20:00:04,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:00:04,700 INFO L225 Difference]: With dead ends: 1654 [2021-05-21 20:00:04,700 INFO L226 Difference]: Without dead ends: 1554 [2021-05-21 20:00:04,700 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 58.1ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:00:04,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1554 states. [2021-05-21 20:00:04,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1554 to 1475. [2021-05-21 20:00:04,713 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) [2021-05-21 20:00:04,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1475 states to 1475 states and 4473 transitions. [2021-05-21 20:00:04,715 INFO L78 Accepts]: Start accepts. Automaton has 1475 states and 4473 transitions. Word has length 26 [2021-05-21 20:00:04,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:00:04,715 INFO L482 AbstractCegarLoop]: Abstraction has 1475 states and 4473 transitions. [2021-05-21 20:00:04,715 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:00:04,715 INFO L276 IsEmpty]: Start isEmpty. Operand 1475 states and 4473 transitions. [2021-05-21 20:00:04,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 20:00:04,716 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:00:04,716 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:00:04,716 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2021-05-21 20:00:04,717 INFO L430 AbstractCegarLoop]: === Iteration 98 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 20:00:04,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:00:04,717 INFO L82 PathProgramCache]: Analyzing trace with hash -2121513890, now seen corresponding path program 96 times [2021-05-21 20:00:04,717 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:00:04,717 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1648280276] [2021-05-21 20:00:04,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:00:04,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:00:04,776 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:00:04,777 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:00:04,777 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1648280276] [2021-05-21 20:00:04,777 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1648280276] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:00:04,777 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:00:04,777 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-21 20:00:04,777 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [876915975] [2021-05-21 20:00:04,777 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:00:04,777 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:00:04,777 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:00:04,777 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:00:04,778 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) [2021-05-21 20:00:04,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:00:04,935 INFO L93 Difference]: Finished difference Result 1649 states and 4952 transitions. [2021-05-21 20:00:04,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:00:04,936 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-05-21 20:00:04,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:00:04,938 INFO L225 Difference]: With dead ends: 1649 [2021-05-21 20:00:04,938 INFO L226 Difference]: Without dead ends: 1561 [2021-05-21 20:00:04,938 INFO L777 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 [2021-05-21 20:00:04,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1561 states. [2021-05-21 20:00:04,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1561 to 1481. [2021-05-21 20:00:04,951 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) [2021-05-21 20:00:04,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1481 states to 1481 states and 4491 transitions. [2021-05-21 20:00:04,953 INFO L78 Accepts]: Start accepts. Automaton has 1481 states and 4491 transitions. Word has length 26 [2021-05-21 20:00:04,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:00:04,953 INFO L482 AbstractCegarLoop]: Abstraction has 1481 states and 4491 transitions. [2021-05-21 20:00:04,953 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:00:04,953 INFO L276 IsEmpty]: Start isEmpty. Operand 1481 states and 4491 transitions. [2021-05-21 20:00:04,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 20:00:04,954 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:00:04,954 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:00:04,954 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2021-05-21 20:00:04,955 INFO L430 AbstractCegarLoop]: === Iteration 99 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 20:00:04,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:00:04,955 INFO L82 PathProgramCache]: Analyzing trace with hash 1461385564, now seen corresponding path program 97 times [2021-05-21 20:00:04,955 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:00:04,955 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [361927846] [2021-05-21 20:00:04,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:00:04,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:00:05,012 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:00:05,012 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:00:05,012 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [361927846] [2021-05-21 20:00:05,013 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [361927846] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:00:05,013 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:00:05,013 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-21 20:00:05,013 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1993389430] [2021-05-21 20:00:05,013 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:00:05,013 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:00:05,013 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:00:05,013 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:00:05,013 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) [2021-05-21 20:00:05,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:00:05,170 INFO L93 Difference]: Finished difference Result 1675 states and 4997 transitions. [2021-05-21 20:00:05,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:00:05,171 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-05-21 20:00:05,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:00:05,173 INFO L225 Difference]: With dead ends: 1675 [2021-05-21 20:00:05,173 INFO L226 Difference]: Without dead ends: 1583 [2021-05-21 20:00:05,173 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 44.5ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:00:05,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1583 states. [2021-05-21 20:00:05,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1583 to 1479. [2021-05-21 20:00:05,187 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) [2021-05-21 20:00:05,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1479 states to 1479 states and 4480 transitions. [2021-05-21 20:00:05,189 INFO L78 Accepts]: Start accepts. Automaton has 1479 states and 4480 transitions. Word has length 26 [2021-05-21 20:00:05,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:00:05,190 INFO L482 AbstractCegarLoop]: Abstraction has 1479 states and 4480 transitions. [2021-05-21 20:00:05,190 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:00:05,190 INFO L276 IsEmpty]: Start isEmpty. Operand 1479 states and 4480 transitions. [2021-05-21 20:00:05,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 20:00:05,191 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:00:05,191 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:00:05,191 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2021-05-21 20:00:05,191 INFO L430 AbstractCegarLoop]: === Iteration 100 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 20:00:05,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:00:05,192 INFO L82 PathProgramCache]: Analyzing trace with hash 781308860, now seen corresponding path program 98 times [2021-05-21 20:00:05,192 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:00:05,192 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [797216027] [2021-05-21 20:00:05,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:00:05,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:00:05,244 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:00:05,244 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:00:05,244 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [797216027] [2021-05-21 20:00:05,245 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [797216027] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:00:05,245 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:00:05,245 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-21 20:00:05,245 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [918064290] [2021-05-21 20:00:05,245 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:00:05,245 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:00:05,245 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:00:05,245 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:00:05,245 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) [2021-05-21 20:00:05,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:00:05,401 INFO L93 Difference]: Finished difference Result 1599 states and 4788 transitions. [2021-05-21 20:00:05,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:00:05,402 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 [2021-05-21 20:00:05,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:00:05,403 INFO L225 Difference]: With dead ends: 1599 [2021-05-21 20:00:05,403 INFO L226 Difference]: Without dead ends: 1480 [2021-05-21 20:00:05,404 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 43.2ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:00:05,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1480 states. [2021-05-21 20:00:05,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1480 to 1444. [2021-05-21 20:00:05,417 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) [2021-05-21 20:00:05,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1444 states to 1444 states and 4393 transitions. [2021-05-21 20:00:05,419 INFO L78 Accepts]: Start accepts. Automaton has 1444 states and 4393 transitions. Word has length 26 [2021-05-21 20:00:05,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:00:05,420 INFO L482 AbstractCegarLoop]: Abstraction has 1444 states and 4393 transitions. [2021-05-21 20:00:05,420 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:00:05,420 INFO L276 IsEmpty]: Start isEmpty. Operand 1444 states and 4393 transitions. [2021-05-21 20:00:05,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 20:00:05,421 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:00:05,421 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:00:05,421 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2021-05-21 20:00:05,421 INFO L430 AbstractCegarLoop]: === Iteration 101 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 20:00:05,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:00:05,421 INFO L82 PathProgramCache]: Analyzing trace with hash -2101954, now seen corresponding path program 99 times [2021-05-21 20:00:05,422 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:00:05,422 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [119036826] [2021-05-21 20:00:05,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:00:05,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:00:05,457 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:00:05,458 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:00:05,458 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [119036826] [2021-05-21 20:00:05,458 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [119036826] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:00:05,458 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:00:05,458 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-05-21 20:00:05,458 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [419142303] [2021-05-21 20:00:05,458 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:00:05,458 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:00:05,458 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:00:05,458 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:00:05,458 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) [2021-05-21 20:00:05,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:00:05,548 INFO L93 Difference]: Finished difference Result 1798 states and 5382 transitions. [2021-05-21 20:00:05,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:00:05,548 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 [2021-05-21 20:00:05,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:00:05,550 INFO L225 Difference]: With dead ends: 1798 [2021-05-21 20:00:05,550 INFO L226 Difference]: Without dead ends: 1641 [2021-05-21 20:00:05,551 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 27.5ms TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:00:05,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1641 states. [2021-05-21 20:00:05,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1641 to 1518. [2021-05-21 20:00:05,565 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) [2021-05-21 20:00:05,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1518 states to 1518 states and 4611 transitions. [2021-05-21 20:00:05,567 INFO L78 Accepts]: Start accepts. Automaton has 1518 states and 4611 transitions. Word has length 26 [2021-05-21 20:00:05,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:00:05,567 INFO L482 AbstractCegarLoop]: Abstraction has 1518 states and 4611 transitions. [2021-05-21 20:00:05,567 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) [2021-05-21 20:00:05,567 INFO L276 IsEmpty]: Start isEmpty. Operand 1518 states and 4611 transitions. [2021-05-21 20:00:05,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 20:00:05,568 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:00:05,568 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:00:05,569 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2021-05-21 20:00:05,569 INFO L430 AbstractCegarLoop]: === Iteration 102 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 20:00:05,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:00:05,569 INFO L82 PathProgramCache]: Analyzing trace with hash -861686948, now seen corresponding path program 100 times [2021-05-21 20:00:05,569 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:00:05,569 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [652467937] [2021-05-21 20:00:05,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:00:05,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:00:05,611 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:00:05,611 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:00:05,611 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [652467937] [2021-05-21 20:00:05,611 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [652467937] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:00:05,611 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:00:05,612 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:00:05,612 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [967843469] [2021-05-21 20:00:05,612 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-21 20:00:05,612 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:00:05,612 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-21 20:00:05,612 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-05-21 20:00:05,612 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) [2021-05-21 20:00:05,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:00:05,728 INFO L93 Difference]: Finished difference Result 1800 states and 5385 transitions. [2021-05-21 20:00:05,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-21 20:00:05,728 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 [2021-05-21 20:00:05,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:00:05,730 INFO L225 Difference]: With dead ends: 1800 [2021-05-21 20:00:05,730 INFO L226 Difference]: Without dead ends: 1650 [2021-05-21 20:00:05,730 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 34.4ms TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-05-21 20:00:05,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1650 states. [2021-05-21 20:00:05,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1650 to 1502. [2021-05-21 20:00:05,743 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) [2021-05-21 20:00:05,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1502 states to 1502 states and 4569 transitions. [2021-05-21 20:00:05,745 INFO L78 Accepts]: Start accepts. Automaton has 1502 states and 4569 transitions. Word has length 26 [2021-05-21 20:00:05,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:00:05,745 INFO L482 AbstractCegarLoop]: Abstraction has 1502 states and 4569 transitions. [2021-05-21 20:00:05,745 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) [2021-05-21 20:00:05,745 INFO L276 IsEmpty]: Start isEmpty. Operand 1502 states and 4569 transitions. [2021-05-21 20:00:05,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 20:00:05,747 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:00:05,747 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:00:05,747 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2021-05-21 20:00:05,747 INFO L430 AbstractCegarLoop]: === Iteration 103 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 20:00:05,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:00:05,747 INFO L82 PathProgramCache]: Analyzing trace with hash -371708032, now seen corresponding path program 101 times [2021-05-21 20:00:05,747 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:00:05,747 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [819497294] [2021-05-21 20:00:05,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:00:05,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:00:05,794 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:00:05,794 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:00:05,794 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [819497294] [2021-05-21 20:00:05,794 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [819497294] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:00:05,794 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:00:05,795 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:00:05,795 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1092134284] [2021-05-21 20:00:05,795 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-21 20:00:05,795 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:00:05,795 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-21 20:00:05,795 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-05-21 20:00:05,795 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) [2021-05-21 20:00:05,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:00:05,927 INFO L93 Difference]: Finished difference Result 1960 states and 5843 transitions. [2021-05-21 20:00:05,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-21 20:00:05,927 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 [2021-05-21 20:00:05,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:00:05,929 INFO L225 Difference]: With dead ends: 1960 [2021-05-21 20:00:05,929 INFO L226 Difference]: Without dead ends: 1674 [2021-05-21 20:00:05,929 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 34.7ms TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-05-21 20:00:05,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1674 states. [2021-05-21 20:00:05,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1674 to 1624. [2021-05-21 20:00:05,943 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) [2021-05-21 20:00:05,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1624 states to 1624 states and 4866 transitions. [2021-05-21 20:00:05,946 INFO L78 Accepts]: Start accepts. Automaton has 1624 states and 4866 transitions. Word has length 26 [2021-05-21 20:00:05,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:00:05,946 INFO L482 AbstractCegarLoop]: Abstraction has 1624 states and 4866 transitions. [2021-05-21 20:00:05,946 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) [2021-05-21 20:00:05,946 INFO L276 IsEmpty]: Start isEmpty. Operand 1624 states and 4866 transitions. [2021-05-21 20:00:05,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 20:00:05,947 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:00:05,947 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:00:05,947 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2021-05-21 20:00:05,948 INFO L430 AbstractCegarLoop]: === Iteration 104 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 20:00:05,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:00:05,948 INFO L82 PathProgramCache]: Analyzing trace with hash 552334938, now seen corresponding path program 102 times [2021-05-21 20:00:05,948 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:00:05,948 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [200967026] [2021-05-21 20:00:05,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:00:05,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:00:05,999 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:00:05,999 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:00:05,999 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [200967026] [2021-05-21 20:00:05,999 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [200967026] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:00:05,999 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:00:05,999 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-21 20:00:05,999 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [974717791] [2021-05-21 20:00:05,999 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:00:05,999 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:00:05,999 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:00:06,000 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:00:06,000 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) [2021-05-21 20:00:06,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:00:06,150 INFO L93 Difference]: Finished difference Result 1845 states and 5416 transitions. [2021-05-21 20:00:06,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:00:06,150 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-05-21 20:00:06,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:00:06,152 INFO L225 Difference]: With dead ends: 1845 [2021-05-21 20:00:06,152 INFO L226 Difference]: Without dead ends: 1600 [2021-05-21 20:00:06,152 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 42.8ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:00:06,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1600 states. [2021-05-21 20:00:06,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1600 to 1516. [2021-05-21 20:00:06,165 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) [2021-05-21 20:00:06,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1516 states to 1516 states and 4482 transitions. [2021-05-21 20:00:06,167 INFO L78 Accepts]: Start accepts. Automaton has 1516 states and 4482 transitions. Word has length 26 [2021-05-21 20:00:06,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:00:06,167 INFO L482 AbstractCegarLoop]: Abstraction has 1516 states and 4482 transitions. [2021-05-21 20:00:06,167 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:00:06,167 INFO L276 IsEmpty]: Start isEmpty. Operand 1516 states and 4482 transitions. [2021-05-21 20:00:06,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 20:00:06,168 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:00:06,168 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:00:06,168 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2021-05-21 20:00:06,168 INFO L430 AbstractCegarLoop]: === Iteration 105 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 20:00:06,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:00:06,169 INFO L82 PathProgramCache]: Analyzing trace with hash -1983958852, now seen corresponding path program 103 times [2021-05-21 20:00:06,169 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:00:06,169 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [303315272] [2021-05-21 20:00:06,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:00:06,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:00:06,225 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:00:06,225 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:00:06,225 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [303315272] [2021-05-21 20:00:06,226 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [303315272] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:00:06,226 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:00:06,226 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-21 20:00:06,226 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1734370304] [2021-05-21 20:00:06,226 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:00:06,226 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:00:06,226 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:00:06,226 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:00:06,226 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) [2021-05-21 20:00:06,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:00:06,377 INFO L93 Difference]: Finished difference Result 1776 states and 5183 transitions. [2021-05-21 20:00:06,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:00:06,377 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-05-21 20:00:06,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:00:06,379 INFO L225 Difference]: With dead ends: 1776 [2021-05-21 20:00:06,379 INFO L226 Difference]: Without dead ends: 1640 [2021-05-21 20:00:06,379 INFO L777 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 [2021-05-21 20:00:06,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1640 states. [2021-05-21 20:00:06,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1640 to 1518. [2021-05-21 20:00:06,392 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) [2021-05-21 20:00:06,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1518 states to 1518 states and 4481 transitions. [2021-05-21 20:00:06,394 INFO L78 Accepts]: Start accepts. Automaton has 1518 states and 4481 transitions. Word has length 26 [2021-05-21 20:00:06,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:00:06,394 INFO L482 AbstractCegarLoop]: Abstraction has 1518 states and 4481 transitions. [2021-05-21 20:00:06,394 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:00:06,394 INFO L276 IsEmpty]: Start isEmpty. Operand 1518 states and 4481 transitions. [2021-05-21 20:00:06,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 20:00:06,395 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:00:06,395 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:00:06,396 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2021-05-21 20:00:06,396 INFO L430 AbstractCegarLoop]: === Iteration 106 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 20:00:06,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:00:06,396 INFO L82 PathProgramCache]: Analyzing trace with hash 1711741822, now seen corresponding path program 104 times [2021-05-21 20:00:06,396 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:00:06,396 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1496586132] [2021-05-21 20:00:06,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:00:06,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:00:06,454 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:00:06,454 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:00:06,454 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1496586132] [2021-05-21 20:00:06,454 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1496586132] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:00:06,454 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:00:06,454 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-21 20:00:06,454 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [344959182] [2021-05-21 20:00:06,454 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:00:06,454 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:00:06,454 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:00:06,454 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:00:06,455 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) [2021-05-21 20:00:06,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:00:06,607 INFO L93 Difference]: Finished difference Result 1746 states and 5066 transitions. [2021-05-21 20:00:06,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:00:06,608 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-05-21 20:00:06,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:00:06,609 INFO L225 Difference]: With dead ends: 1746 [2021-05-21 20:00:06,609 INFO L226 Difference]: Without dead ends: 1617 [2021-05-21 20:00:06,610 INFO L777 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 [2021-05-21 20:00:06,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1617 states. [2021-05-21 20:00:06,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1617 to 1514. [2021-05-21 20:00:06,622 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) [2021-05-21 20:00:06,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1514 states to 1514 states and 4470 transitions. [2021-05-21 20:00:06,624 INFO L78 Accepts]: Start accepts. Automaton has 1514 states and 4470 transitions. Word has length 26 [2021-05-21 20:00:06,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:00:06,624 INFO L482 AbstractCegarLoop]: Abstraction has 1514 states and 4470 transitions. [2021-05-21 20:00:06,624 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:00:06,624 INFO L276 IsEmpty]: Start isEmpty. Operand 1514 states and 4470 transitions. [2021-05-21 20:00:06,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 20:00:06,626 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:00:06,626 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:00:06,626 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2021-05-21 20:00:06,626 INFO L430 AbstractCegarLoop]: === Iteration 107 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 20:00:06,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:00:06,626 INFO L82 PathProgramCache]: Analyzing trace with hash 1138344546, now seen corresponding path program 105 times [2021-05-21 20:00:06,626 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:00:06,626 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1537096182] [2021-05-21 20:00:06,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:00:06,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:00:06,683 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:00:06,683 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:00:06,684 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1537096182] [2021-05-21 20:00:06,684 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1537096182] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:00:06,684 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:00:06,684 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-21 20:00:06,684 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [160563243] [2021-05-21 20:00:06,684 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:00:06,684 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:00:06,684 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:00:06,684 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:00:06,684 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) [2021-05-21 20:00:06,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:00:06,847 INFO L93 Difference]: Finished difference Result 1698 states and 4924 transitions. [2021-05-21 20:00:06,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:00:06,848 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-05-21 20:00:06,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:00:06,849 INFO L225 Difference]: With dead ends: 1698 [2021-05-21 20:00:06,849 INFO L226 Difference]: Without dead ends: 1552 [2021-05-21 20:00:06,849 INFO L777 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 [2021-05-21 20:00:06,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1552 states. [2021-05-21 20:00:06,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1552 to 1502. [2021-05-21 20:00:06,862 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) [2021-05-21 20:00:06,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1502 states to 1502 states and 4439 transitions. [2021-05-21 20:00:06,864 INFO L78 Accepts]: Start accepts. Automaton has 1502 states and 4439 transitions. Word has length 26 [2021-05-21 20:00:06,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:00:06,864 INFO L482 AbstractCegarLoop]: Abstraction has 1502 states and 4439 transitions. [2021-05-21 20:00:06,864 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) [2021-05-21 20:00:06,864 INFO L276 IsEmpty]: Start isEmpty. Operand 1502 states and 4439 transitions. [2021-05-21 20:00:06,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 20:00:06,865 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:00:06,865 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:00:06,866 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2021-05-21 20:00:06,866 INFO L430 AbstractCegarLoop]: === Iteration 108 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 20:00:06,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:00:06,866 INFO L82 PathProgramCache]: Analyzing trace with hash 1141733984, now seen corresponding path program 106 times [2021-05-21 20:00:06,866 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:00:06,866 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1094147287] [2021-05-21 20:00:06,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:00:06,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:00:06,921 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:00:06,922 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:00:06,922 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1094147287] [2021-05-21 20:00:06,922 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1094147287] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:00:06,922 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:00:06,922 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-21 20:00:06,922 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1082507689] [2021-05-21 20:00:06,922 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:00:06,922 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:00:06,922 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:00:06,922 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:00:06,922 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) [2021-05-21 20:00:07,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:00:07,083 INFO L93 Difference]: Finished difference Result 1727 states and 5036 transitions. [2021-05-21 20:00:07,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:00:07,083 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-05-21 20:00:07,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:00:07,085 INFO L225 Difference]: With dead ends: 1727 [2021-05-21 20:00:07,085 INFO L226 Difference]: Without dead ends: 1598 [2021-05-21 20:00:07,085 INFO L777 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 [2021-05-21 20:00:07,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1598 states. [2021-05-21 20:00:07,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1598 to 1526. [2021-05-21 20:00:07,098 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) [2021-05-21 20:00:07,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1526 states to 1526 states and 4505 transitions. [2021-05-21 20:00:07,100 INFO L78 Accepts]: Start accepts. Automaton has 1526 states and 4505 transitions. Word has length 26 [2021-05-21 20:00:07,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:00:07,100 INFO L482 AbstractCegarLoop]: Abstraction has 1526 states and 4505 transitions. [2021-05-21 20:00:07,100 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) [2021-05-21 20:00:07,101 INFO L276 IsEmpty]: Start isEmpty. Operand 1526 states and 4505 transitions. [2021-05-21 20:00:07,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 20:00:07,102 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:00:07,102 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:00:07,102 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2021-05-21 20:00:07,102 INFO L430 AbstractCegarLoop]: === Iteration 109 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 20:00:07,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:00:07,102 INFO L82 PathProgramCache]: Analyzing trace with hash 568336708, now seen corresponding path program 107 times [2021-05-21 20:00:07,102 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:00:07,102 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1724635647] [2021-05-21 20:00:07,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:00:07,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:00:07,167 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:00:07,167 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:00:07,168 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1724635647] [2021-05-21 20:00:07,168 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1724635647] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:00:07,168 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:00:07,168 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-21 20:00:07,168 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1565978676] [2021-05-21 20:00:07,168 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:00:07,168 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:00:07,168 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:00:07,168 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:00:07,168 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) [2021-05-21 20:00:07,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:00:07,325 INFO L93 Difference]: Finished difference Result 1850 states and 5404 transitions. [2021-05-21 20:00:07,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:00:07,325 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-05-21 20:00:07,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:00:07,327 INFO L225 Difference]: With dead ends: 1850 [2021-05-21 20:00:07,327 INFO L226 Difference]: Without dead ends: 1689 [2021-05-21 20:00:07,327 INFO L777 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 [2021-05-21 20:00:07,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1689 states. [2021-05-21 20:00:07,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1689 to 1590. [2021-05-21 20:00:07,341 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) [2021-05-21 20:00:07,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1590 states to 1590 states and 4683 transitions. [2021-05-21 20:00:07,343 INFO L78 Accepts]: Start accepts. Automaton has 1590 states and 4683 transitions. Word has length 26 [2021-05-21 20:00:07,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:00:07,343 INFO L482 AbstractCegarLoop]: Abstraction has 1590 states and 4683 transitions. [2021-05-21 20:00:07,343 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:00:07,343 INFO L276 IsEmpty]: Start isEmpty. Operand 1590 states and 4683 transitions. [2021-05-21 20:00:07,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 20:00:07,345 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:00:07,345 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:00:07,345 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2021-05-21 20:00:07,345 INFO L430 AbstractCegarLoop]: === Iteration 110 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 20:00:07,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:00:07,345 INFO L82 PathProgramCache]: Analyzing trace with hash 442819714, now seen corresponding path program 108 times [2021-05-21 20:00:07,345 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:00:07,345 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [328847196] [2021-05-21 20:00:07,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:00:07,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:00:07,400 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:00:07,400 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:00:07,400 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [328847196] [2021-05-21 20:00:07,400 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [328847196] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:00:07,400 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:00:07,400 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-21 20:00:07,401 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1834920992] [2021-05-21 20:00:07,401 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:00:07,401 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:00:07,401 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:00:07,401 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:00:07,401 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) [2021-05-21 20:00:07,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:00:07,564 INFO L93 Difference]: Finished difference Result 1788 states and 5178 transitions. [2021-05-21 20:00:07,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:00:07,564 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-05-21 20:00:07,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:00:07,567 INFO L225 Difference]: With dead ends: 1788 [2021-05-21 20:00:07,567 INFO L226 Difference]: Without dead ends: 1636 [2021-05-21 20:00:07,567 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 43.6ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:00:07,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1636 states. [2021-05-21 20:00:07,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1636 to 1524. [2021-05-21 20:00:07,581 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) [2021-05-21 20:00:07,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1524 states to 1524 states and 4494 transitions. [2021-05-21 20:00:07,583 INFO L78 Accepts]: Start accepts. Automaton has 1524 states and 4494 transitions. Word has length 26 [2021-05-21 20:00:07,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:00:07,583 INFO L482 AbstractCegarLoop]: Abstraction has 1524 states and 4494 transitions. [2021-05-21 20:00:07,583 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) [2021-05-21 20:00:07,583 INFO L276 IsEmpty]: Start isEmpty. Operand 1524 states and 4494 transitions. [2021-05-21 20:00:07,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 20:00:07,585 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:00:07,585 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:00:07,585 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2021-05-21 20:00:07,585 INFO L430 AbstractCegarLoop]: === Iteration 111 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 20:00:07,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:00:07,585 INFO L82 PathProgramCache]: Analyzing trace with hash 1608572506, now seen corresponding path program 109 times [2021-05-21 20:00:07,585 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:00:07,585 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1473666553] [2021-05-21 20:00:07,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:00:07,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:00:07,644 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:00:07,644 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:00:07,644 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1473666553] [2021-05-21 20:00:07,644 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1473666553] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:00:07,644 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:00:07,644 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-21 20:00:07,644 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [595526937] [2021-05-21 20:00:07,644 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:00:07,645 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:00:07,645 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:00:07,645 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:00:07,645 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) [2021-05-21 20:00:07,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:00:07,800 INFO L93 Difference]: Finished difference Result 1802 states and 5245 transitions. [2021-05-21 20:00:07,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:00:07,800 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-05-21 20:00:07,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:00:07,802 INFO L225 Difference]: With dead ends: 1802 [2021-05-21 20:00:07,802 INFO L226 Difference]: Without dead ends: 1586 [2021-05-21 20:00:07,802 INFO L777 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 [2021-05-21 20:00:07,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1586 states. [2021-05-21 20:00:07,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1586 to 1464. [2021-05-21 20:00:07,814 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) [2021-05-21 20:00:07,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1464 states to 1464 states and 4318 transitions. [2021-05-21 20:00:07,816 INFO L78 Accepts]: Start accepts. Automaton has 1464 states and 4318 transitions. Word has length 26 [2021-05-21 20:00:07,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:00:07,816 INFO L482 AbstractCegarLoop]: Abstraction has 1464 states and 4318 transitions. [2021-05-21 20:00:07,816 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:00:07,816 INFO L276 IsEmpty]: Start isEmpty. Operand 1464 states and 4318 transitions. [2021-05-21 20:00:07,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 20:00:07,818 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:00:07,820 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:00:07,820 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2021-05-21 20:00:07,820 INFO L430 AbstractCegarLoop]: === Iteration 112 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 20:00:07,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:00:07,821 INFO L82 PathProgramCache]: Analyzing trace with hash -2030139044, now seen corresponding path program 110 times [2021-05-21 20:00:07,821 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:00:07,821 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [569059267] [2021-05-21 20:00:07,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:00:07,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:00:07,868 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:00:07,868 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:00:07,868 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [569059267] [2021-05-21 20:00:07,868 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [569059267] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:00:07,868 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:00:07,868 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:00:07,868 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [431983643] [2021-05-21 20:00:07,868 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-21 20:00:07,868 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:00:07,868 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-21 20:00:07,868 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-05-21 20:00:07,868 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) [2021-05-21 20:00:07,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:00:07,991 INFO L93 Difference]: Finished difference Result 1765 states and 5135 transitions. [2021-05-21 20:00:07,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-21 20:00:07,991 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 [2021-05-21 20:00:07,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:00:07,993 INFO L225 Difference]: With dead ends: 1765 [2021-05-21 20:00:07,993 INFO L226 Difference]: Without dead ends: 1626 [2021-05-21 20:00:07,993 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 37.3ms TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-05-21 20:00:07,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1626 states. [2021-05-21 20:00:08,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1626 to 1511. [2021-05-21 20:00:08,006 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) [2021-05-21 20:00:08,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1511 states to 1511 states and 4436 transitions. [2021-05-21 20:00:08,008 INFO L78 Accepts]: Start accepts. Automaton has 1511 states and 4436 transitions. Word has length 26 [2021-05-21 20:00:08,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:00:08,008 INFO L482 AbstractCegarLoop]: Abstraction has 1511 states and 4436 transitions. [2021-05-21 20:00:08,009 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) [2021-05-21 20:00:08,009 INFO L276 IsEmpty]: Start isEmpty. Operand 1511 states and 4436 transitions. [2021-05-21 20:00:08,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 20:00:08,010 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:00:08,010 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:00:08,010 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2021-05-21 20:00:08,010 INFO L430 AbstractCegarLoop]: === Iteration 113 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 20:00:08,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:00:08,010 INFO L82 PathProgramCache]: Analyzing trace with hash 1405243258, now seen corresponding path program 111 times [2021-05-21 20:00:08,010 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:00:08,011 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [396143030] [2021-05-21 20:00:08,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:00:08,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:00:08,062 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:00:08,062 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:00:08,062 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [396143030] [2021-05-21 20:00:08,062 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [396143030] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:00:08,062 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:00:08,062 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-21 20:00:08,063 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [80214890] [2021-05-21 20:00:08,063 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:00:08,063 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:00:08,063 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:00:08,063 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:00:08,063 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) [2021-05-21 20:00:08,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:00:08,216 INFO L93 Difference]: Finished difference Result 1727 states and 5019 transitions. [2021-05-21 20:00:08,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:00:08,216 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 [2021-05-21 20:00:08,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:00:08,218 INFO L225 Difference]: With dead ends: 1727 [2021-05-21 20:00:08,218 INFO L226 Difference]: Without dead ends: 1595 [2021-05-21 20:00:08,218 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 43.6ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:00:08,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1595 states. [2021-05-21 20:00:08,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1595 to 1473. [2021-05-21 20:00:08,231 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) [2021-05-21 20:00:08,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1473 states to 1473 states and 4332 transitions. [2021-05-21 20:00:08,233 INFO L78 Accepts]: Start accepts. Automaton has 1473 states and 4332 transitions. Word has length 26 [2021-05-21 20:00:08,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:00:08,233 INFO L482 AbstractCegarLoop]: Abstraction has 1473 states and 4332 transitions. [2021-05-21 20:00:08,233 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) [2021-05-21 20:00:08,233 INFO L276 IsEmpty]: Start isEmpty. Operand 1473 states and 4332 transitions. [2021-05-21 20:00:08,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 20:00:08,234 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:00:08,234 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:00:08,234 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2021-05-21 20:00:08,234 INFO L430 AbstractCegarLoop]: === Iteration 114 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 20:00:08,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:00:08,235 INFO L82 PathProgramCache]: Analyzing trace with hash 1895222174, now seen corresponding path program 112 times [2021-05-21 20:00:08,235 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:00:08,235 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [956670554] [2021-05-21 20:00:08,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:00:08,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:00:08,287 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:00:08,287 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:00:08,287 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [956670554] [2021-05-21 20:00:08,287 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [956670554] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:00:08,287 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:00:08,287 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:00:08,287 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1126099016] [2021-05-21 20:00:08,287 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-21 20:00:08,287 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:00:08,287 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-21 20:00:08,288 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-05-21 20:00:08,288 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) [2021-05-21 20:00:08,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:00:08,412 INFO L93 Difference]: Finished difference Result 1775 states and 5127 transitions. [2021-05-21 20:00:08,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-21 20:00:08,412 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 [2021-05-21 20:00:08,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:00:08,414 INFO L225 Difference]: With dead ends: 1775 [2021-05-21 20:00:08,414 INFO L226 Difference]: Without dead ends: 1647 [2021-05-21 20:00:08,414 INFO L777 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 [2021-05-21 20:00:08,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1647 states. [2021-05-21 20:00:08,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1647 to 1525. [2021-05-21 20:00:08,427 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) [2021-05-21 20:00:08,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1525 states to 1525 states and 4461 transitions. [2021-05-21 20:00:08,429 INFO L78 Accepts]: Start accepts. Automaton has 1525 states and 4461 transitions. Word has length 26 [2021-05-21 20:00:08,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:00:08,429 INFO L482 AbstractCegarLoop]: Abstraction has 1525 states and 4461 transitions. [2021-05-21 20:00:08,429 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) [2021-05-21 20:00:08,429 INFO L276 IsEmpty]: Start isEmpty. Operand 1525 states and 4461 transitions. [2021-05-21 20:00:08,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 20:00:08,431 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:00:08,431 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:00:08,431 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2021-05-21 20:00:08,431 INFO L430 AbstractCegarLoop]: === Iteration 115 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 20:00:08,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:00:08,431 INFO L82 PathProgramCache]: Analyzing trace with hash -1475702152, now seen corresponding path program 113 times [2021-05-21 20:00:08,431 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:00:08,431 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [34608715] [2021-05-21 20:00:08,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:00:08,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:00:08,488 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:00:08,488 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:00:08,488 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [34608715] [2021-05-21 20:00:08,489 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [34608715] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:00:08,489 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:00:08,489 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-21 20:00:08,489 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491963498] [2021-05-21 20:00:08,489 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:00:08,489 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:00:08,489 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:00:08,489 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:00:08,489 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) [2021-05-21 20:00:08,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:00:08,660 INFO L93 Difference]: Finished difference Result 1738 states and 5008 transitions. [2021-05-21 20:00:08,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:00:08,661 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-05-21 20:00:08,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:00:08,662 INFO L225 Difference]: With dead ends: 1738 [2021-05-21 20:00:08,663 INFO L226 Difference]: Without dead ends: 1633 [2021-05-21 20:00:08,663 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 45.5ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:00:08,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1633 states. [2021-05-21 20:00:08,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1633 to 1501. [2021-05-21 20:00:08,676 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) [2021-05-21 20:00:08,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1501 states to 1501 states and 4399 transitions. [2021-05-21 20:00:08,678 INFO L78 Accepts]: Start accepts. Automaton has 1501 states and 4399 transitions. Word has length 26 [2021-05-21 20:00:08,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:00:08,678 INFO L482 AbstractCegarLoop]: Abstraction has 1501 states and 4399 transitions. [2021-05-21 20:00:08,678 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:00:08,678 INFO L276 IsEmpty]: Start isEmpty. Operand 1501 states and 4399 transitions. [2021-05-21 20:00:08,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 20:00:08,680 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:00:08,680 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:00:08,680 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2021-05-21 20:00:08,680 INFO L430 AbstractCegarLoop]: === Iteration 116 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 20:00:08,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:00:08,680 INFO L82 PathProgramCache]: Analyzing trace with hash 282971354, now seen corresponding path program 114 times [2021-05-21 20:00:08,680 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:00:08,680 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1877525334] [2021-05-21 20:00:08,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:00:08,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:00:08,770 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:00:08,770 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:00:08,770 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1877525334] [2021-05-21 20:00:08,770 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1877525334] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:00:08,770 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:00:08,770 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-21 20:00:08,770 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [535601015] [2021-05-21 20:00:08,770 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:00:08,770 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:00:08,771 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:00:08,771 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:00:08,771 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) [2021-05-21 20:00:08,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:00:08,949 INFO L93 Difference]: Finished difference Result 1652 states and 4785 transitions. [2021-05-21 20:00:08,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:00:08,950 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-05-21 20:00:08,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:00:08,952 INFO L225 Difference]: With dead ends: 1652 [2021-05-21 20:00:08,952 INFO L226 Difference]: Without dead ends: 1573 [2021-05-21 20:00:08,952 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 80.4ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:00:08,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1573 states. [2021-05-21 20:00:08,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1573 to 1507. [2021-05-21 20:00:08,967 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) [2021-05-21 20:00:08,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1507 states to 1507 states and 4409 transitions. [2021-05-21 20:00:08,969 INFO L78 Accepts]: Start accepts. Automaton has 1507 states and 4409 transitions. Word has length 26 [2021-05-21 20:00:08,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:00:08,969 INFO L482 AbstractCegarLoop]: Abstraction has 1507 states and 4409 transitions. [2021-05-21 20:00:08,969 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:00:08,969 INFO L276 IsEmpty]: Start isEmpty. Operand 1507 states and 4409 transitions. [2021-05-21 20:00:08,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 20:00:08,971 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:00:08,971 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:00:08,971 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2021-05-21 20:00:08,971 INFO L430 AbstractCegarLoop]: === Iteration 117 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 20:00:08,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:00:08,971 INFO L82 PathProgramCache]: Analyzing trace with hash 1152415962, now seen corresponding path program 115 times [2021-05-21 20:00:08,971 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:00:08,971 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [535061017] [2021-05-21 20:00:08,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:00:08,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:00:09,030 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:00:09,030 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:00:09,030 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [535061017] [2021-05-21 20:00:09,030 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [535061017] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:00:09,030 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:00:09,030 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-21 20:00:09,030 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [975060835] [2021-05-21 20:00:09,031 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:00:09,031 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:00:09,031 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:00:09,031 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:00:09,031 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) [2021-05-21 20:00:09,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:00:09,196 INFO L93 Difference]: Finished difference Result 1745 states and 5047 transitions. [2021-05-21 20:00:09,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:00:09,197 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-05-21 20:00:09,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:00:09,198 INFO L225 Difference]: With dead ends: 1745 [2021-05-21 20:00:09,199 INFO L226 Difference]: Without dead ends: 1641 [2021-05-21 20:00:09,199 INFO L777 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 [2021-05-21 20:00:09,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1641 states. [2021-05-21 20:00:09,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1641 to 1499. [2021-05-21 20:00:09,212 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) [2021-05-21 20:00:09,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1499 states to 1499 states and 4394 transitions. [2021-05-21 20:00:09,214 INFO L78 Accepts]: Start accepts. Automaton has 1499 states and 4394 transitions. Word has length 26 [2021-05-21 20:00:09,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:00:09,214 INFO L482 AbstractCegarLoop]: Abstraction has 1499 states and 4394 transitions. [2021-05-21 20:00:09,214 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:00:09,214 INFO L276 IsEmpty]: Start isEmpty. Operand 1499 states and 4394 transitions. [2021-05-21 20:00:09,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 20:00:09,215 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:00:09,215 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:00:09,215 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116 [2021-05-21 20:00:09,215 INFO L430 AbstractCegarLoop]: === Iteration 118 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 20:00:09,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:00:09,216 INFO L82 PathProgramCache]: Analyzing trace with hash -316295268, now seen corresponding path program 116 times [2021-05-21 20:00:09,216 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:00:09,216 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [250472858] [2021-05-21 20:00:09,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:00:09,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:00:09,271 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:00:09,271 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:00:09,272 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [250472858] [2021-05-21 20:00:09,272 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [250472858] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:00:09,272 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:00:09,272 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-21 20:00:09,272 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [596278696] [2021-05-21 20:00:09,272 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:00:09,272 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:00:09,272 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:00:09,272 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:00:09,272 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) [2021-05-21 20:00:09,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:00:09,434 INFO L93 Difference]: Finished difference Result 1652 states and 4784 transitions. [2021-05-21 20:00:09,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:00:09,434 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-05-21 20:00:09,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:00:09,436 INFO L225 Difference]: With dead ends: 1652 [2021-05-21 20:00:09,436 INFO L226 Difference]: Without dead ends: 1573 [2021-05-21 20:00:09,436 INFO L777 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 [2021-05-21 20:00:09,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1573 states. [2021-05-21 20:00:09,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1573 to 1493. [2021-05-21 20:00:09,449 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) [2021-05-21 20:00:09,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1493 states to 1493 states and 4384 transitions. [2021-05-21 20:00:09,451 INFO L78 Accepts]: Start accepts. Automaton has 1493 states and 4384 transitions. Word has length 26 [2021-05-21 20:00:09,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:00:09,452 INFO L482 AbstractCegarLoop]: Abstraction has 1493 states and 4384 transitions. [2021-05-21 20:00:09,452 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) [2021-05-21 20:00:09,452 INFO L276 IsEmpty]: Start isEmpty. Operand 1493 states and 4384 transitions. [2021-05-21 20:00:09,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 20:00:09,453 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:00:09,453 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:00:09,453 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117 [2021-05-21 20:00:09,453 INFO L430 AbstractCegarLoop]: === Iteration 119 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 20:00:09,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:00:09,453 INFO L82 PathProgramCache]: Analyzing trace with hash -889692544, now seen corresponding path program 117 times [2021-05-21 20:00:09,454 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:00:09,454 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [534968586] [2021-05-21 20:00:09,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:00:09,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:00:09,515 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:00:09,516 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:00:09,516 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [534968586] [2021-05-21 20:00:09,516 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [534968586] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:00:09,516 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:00:09,516 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-21 20:00:09,516 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491066861] [2021-05-21 20:00:09,516 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:00:09,516 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:00:09,516 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:00:09,516 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:00:09,516 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) [2021-05-21 20:00:09,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:00:09,687 INFO L93 Difference]: Finished difference Result 1700 states and 4918 transitions. [2021-05-21 20:00:09,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:00:09,687 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-05-21 20:00:09,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:00:09,689 INFO L225 Difference]: With dead ends: 1700 [2021-05-21 20:00:09,689 INFO L226 Difference]: Without dead ends: 1604 [2021-05-21 20:00:09,689 INFO L777 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 [2021-05-21 20:00:09,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1604 states. [2021-05-21 20:00:09,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1604 to 1481. [2021-05-21 20:00:09,704 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) [2021-05-21 20:00:09,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1481 states to 1481 states and 4361 transitions. [2021-05-21 20:00:09,707 INFO L78 Accepts]: Start accepts. Automaton has 1481 states and 4361 transitions. Word has length 26 [2021-05-21 20:00:09,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:00:09,707 INFO L482 AbstractCegarLoop]: Abstraction has 1481 states and 4361 transitions. [2021-05-21 20:00:09,707 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:00:09,707 INFO L276 IsEmpty]: Start isEmpty. Operand 1481 states and 4361 transitions. [2021-05-21 20:00:09,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 20:00:09,709 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:00:09,709 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:00:09,709 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118 [2021-05-21 20:00:09,709 INFO L430 AbstractCegarLoop]: === Iteration 120 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 20:00:09,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:00:09,709 INFO L82 PathProgramCache]: Analyzing trace with hash -664852864, now seen corresponding path program 118 times [2021-05-21 20:00:09,709 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:00:09,709 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1814731802] [2021-05-21 20:00:09,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:00:09,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:00:09,766 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:00:09,766 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:00:09,766 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1814731802] [2021-05-21 20:00:09,766 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1814731802] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:00:09,766 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:00:09,766 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:00:09,767 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1324885932] [2021-05-21 20:00:09,767 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-21 20:00:09,767 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:00:09,767 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-21 20:00:09,767 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-05-21 20:00:09,767 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) [2021-05-21 20:00:09,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:00:09,901 INFO L93 Difference]: Finished difference Result 1724 states and 4976 transitions. [2021-05-21 20:00:09,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-21 20:00:09,901 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 [2021-05-21 20:00:09,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:00:09,903 INFO L225 Difference]: With dead ends: 1724 [2021-05-21 20:00:09,903 INFO L226 Difference]: Without dead ends: 1560 [2021-05-21 20:00:09,903 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 45.8ms TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-05-21 20:00:09,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1560 states. [2021-05-21 20:00:09,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1560 to 1470. [2021-05-21 20:00:09,917 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) [2021-05-21 20:00:09,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1470 states to 1470 states and 4309 transitions. [2021-05-21 20:00:09,919 INFO L78 Accepts]: Start accepts. Automaton has 1470 states and 4309 transitions. Word has length 26 [2021-05-21 20:00:09,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:00:09,919 INFO L482 AbstractCegarLoop]: Abstraction has 1470 states and 4309 transitions. [2021-05-21 20:00:09,919 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) [2021-05-21 20:00:09,919 INFO L276 IsEmpty]: Start isEmpty. Operand 1470 states and 4309 transitions. [2021-05-21 20:00:09,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 20:00:09,920 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:00:09,920 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:00:09,921 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119 [2021-05-21 20:00:09,921 INFO L430 AbstractCegarLoop]: === Iteration 121 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 20:00:09,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:00:09,921 INFO L82 PathProgramCache]: Analyzing trace with hash 259190106, now seen corresponding path program 119 times [2021-05-21 20:00:09,921 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:00:09,921 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1725898204] [2021-05-21 20:00:09,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:00:09,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:00:09,988 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:00:09,988 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:00:09,988 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1725898204] [2021-05-21 20:00:09,989 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1725898204] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:00:09,989 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:00:09,989 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-21 20:00:09,989 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1775613828] [2021-05-21 20:00:09,989 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:00:09,989 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:00:09,989 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:00:09,989 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:00:09,989 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) [2021-05-21 20:00:10,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:00:10,153 INFO L93 Difference]: Finished difference Result 1671 states and 4816 transitions. [2021-05-21 20:00:10,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:00:10,154 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-05-21 20:00:10,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:00:10,156 INFO L225 Difference]: With dead ends: 1671 [2021-05-21 20:00:10,156 INFO L226 Difference]: Without dead ends: 1566 [2021-05-21 20:00:10,156 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 55.9ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:00:10,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1566 states. [2021-05-21 20:00:10,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1566 to 1446. [2021-05-21 20:00:10,170 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) [2021-05-21 20:00:10,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1446 states to 1446 states and 4243 transitions. [2021-05-21 20:00:10,172 INFO L78 Accepts]: Start accepts. Automaton has 1446 states and 4243 transitions. Word has length 26 [2021-05-21 20:00:10,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:00:10,172 INFO L482 AbstractCegarLoop]: Abstraction has 1446 states and 4243 transitions. [2021-05-21 20:00:10,172 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:00:10,172 INFO L276 IsEmpty]: Start isEmpty. Operand 1446 states and 4243 transitions. [2021-05-21 20:00:10,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 20:00:10,173 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:00:10,173 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:00:10,173 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120 [2021-05-21 20:00:10,173 INFO L430 AbstractCegarLoop]: === Iteration 122 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 20:00:10,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:00:10,174 INFO L82 PathProgramCache]: Analyzing trace with hash 376447608, now seen corresponding path program 120 times [2021-05-21 20:00:10,174 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:00:10,174 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [76239249] [2021-05-21 20:00:10,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:00:10,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:00:10,246 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:00:10,246 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:00:10,246 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [76239249] [2021-05-21 20:00:10,246 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [76239249] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:00:10,246 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:00:10,246 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-21 20:00:10,247 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1849809487] [2021-05-21 20:00:10,247 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:00:10,247 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:00:10,247 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:00:10,247 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:00:10,247 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) [2021-05-21 20:00:10,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:00:10,417 INFO L93 Difference]: Finished difference Result 1597 states and 4640 transitions. [2021-05-21 20:00:10,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:00:10,418 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-05-21 20:00:10,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:00:10,419 INFO L225 Difference]: With dead ends: 1597 [2021-05-21 20:00:10,419 INFO L226 Difference]: Without dead ends: 1518 [2021-05-21 20:00:10,420 INFO L777 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 [2021-05-21 20:00:10,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1518 states. [2021-05-21 20:00:10,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1518 to 1448. [2021-05-21 20:00:10,433 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) [2021-05-21 20:00:10,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1448 states to 1448 states and 4250 transitions. [2021-05-21 20:00:10,435 INFO L78 Accepts]: Start accepts. Automaton has 1448 states and 4250 transitions. Word has length 26 [2021-05-21 20:00:10,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:00:10,435 INFO L482 AbstractCegarLoop]: Abstraction has 1448 states and 4250 transitions. [2021-05-21 20:00:10,435 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:00:10,435 INFO L276 IsEmpty]: Start isEmpty. Operand 1448 states and 4250 transitions. [2021-05-21 20:00:10,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 20:00:10,436 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:00:10,436 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:00:10,436 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121 [2021-05-21 20:00:10,436 INFO L430 AbstractCegarLoop]: === Iteration 123 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 20:00:10,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:00:10,437 INFO L82 PathProgramCache]: Analyzing trace with hash 1599135360, now seen corresponding path program 121 times [2021-05-21 20:00:10,437 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:00:10,437 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2125251928] [2021-05-21 20:00:10,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:00:10,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:00:10,511 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:00:10,512 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:00:10,512 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2125251928] [2021-05-21 20:00:10,512 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2125251928] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:00:10,512 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:00:10,512 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-21 20:00:10,512 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1984368765] [2021-05-21 20:00:10,512 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:00:10,512 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:00:10,512 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:00:10,512 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:00:10,512 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) [2021-05-21 20:00:10,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:00:10,679 INFO L93 Difference]: Finished difference Result 1668 states and 4799 transitions. [2021-05-21 20:00:10,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:00:10,679 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-05-21 20:00:10,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:00:10,681 INFO L225 Difference]: With dead ends: 1668 [2021-05-21 20:00:10,681 INFO L226 Difference]: Without dead ends: 1579 [2021-05-21 20:00:10,681 INFO L777 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 [2021-05-21 20:00:10,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1579 states. [2021-05-21 20:00:10,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1579 to 1445. [2021-05-21 20:00:10,694 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) [2021-05-21 20:00:10,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1445 states to 1445 states and 4236 transitions. [2021-05-21 20:00:10,696 INFO L78 Accepts]: Start accepts. Automaton has 1445 states and 4236 transitions. Word has length 26 [2021-05-21 20:00:10,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:00:10,696 INFO L482 AbstractCegarLoop]: Abstraction has 1445 states and 4236 transitions. [2021-05-21 20:00:10,696 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:00:10,696 INFO L276 IsEmpty]: Start isEmpty. Operand 1445 states and 4236 transitions. [2021-05-21 20:00:10,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 20:00:10,697 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:00:10,698 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:00:10,698 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable122 [2021-05-21 20:00:10,698 INFO L430 AbstractCegarLoop]: === Iteration 124 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 20:00:10,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:00:10,698 INFO L82 PathProgramCache]: Analyzing trace with hash -1192480934, now seen corresponding path program 122 times [2021-05-21 20:00:10,698 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:00:10,698 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1603369636] [2021-05-21 20:00:10,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:00:10,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:00:10,760 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:00:10,760 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:00:10,760 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1603369636] [2021-05-21 20:00:10,760 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1603369636] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:00:10,760 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:00:10,760 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-21 20:00:10,760 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1891369472] [2021-05-21 20:00:10,761 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:00:10,761 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:00:10,761 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:00:10,761 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:00:10,761 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) [2021-05-21 20:00:10,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:00:10,914 INFO L93 Difference]: Finished difference Result 1656 states and 4808 transitions. [2021-05-21 20:00:10,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:00:10,915 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-05-21 20:00:10,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:00:10,916 INFO L225 Difference]: With dead ends: 1656 [2021-05-21 20:00:10,916 INFO L226 Difference]: Without dead ends: 1553 [2021-05-21 20:00:10,917 INFO L777 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 [2021-05-21 20:00:10,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1553 states. [2021-05-21 20:00:10,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1553 to 1387. [2021-05-21 20:00:10,929 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) [2021-05-21 20:00:10,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1387 states to 1387 states and 4096 transitions. [2021-05-21 20:00:10,931 INFO L78 Accepts]: Start accepts. Automaton has 1387 states and 4096 transitions. Word has length 26 [2021-05-21 20:00:10,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:00:10,931 INFO L482 AbstractCegarLoop]: Abstraction has 1387 states and 4096 transitions. [2021-05-21 20:00:10,931 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:00:10,931 INFO L276 IsEmpty]: Start isEmpty. Operand 1387 states and 4096 transitions. [2021-05-21 20:00:10,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 20:00:10,933 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:00:10,933 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:00:10,933 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable123 [2021-05-21 20:00:10,933 INFO L430 AbstractCegarLoop]: === Iteration 125 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 20:00:10,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:00:10,933 INFO L82 PathProgramCache]: Analyzing trace with hash -938795814, now seen corresponding path program 123 times [2021-05-21 20:00:10,933 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:00:10,934 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1308649745] [2021-05-21 20:00:10,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:00:10,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:00:10,999 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:00:10,999 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:00:10,999 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1308649745] [2021-05-21 20:00:10,999 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1308649745] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:00:10,999 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:00:10,999 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-21 20:00:10,999 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2136227114] [2021-05-21 20:00:10,999 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:00:10,999 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:00:11,000 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:00:11,000 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:00:11,000 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) [2021-05-21 20:00:11,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:00:11,157 INFO L93 Difference]: Finished difference Result 1532 states and 4467 transitions. [2021-05-21 20:00:11,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:00:11,157 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-05-21 20:00:11,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:00:11,159 INFO L225 Difference]: With dead ends: 1532 [2021-05-21 20:00:11,159 INFO L226 Difference]: Without dead ends: 1453 [2021-05-21 20:00:11,159 INFO L777 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 [2021-05-21 20:00:11,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1453 states. [2021-05-21 20:00:11,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1453 to 1388. [2021-05-21 20:00:11,171 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) [2021-05-21 20:00:11,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1388 states to 1388 states and 4100 transitions. [2021-05-21 20:00:11,173 INFO L78 Accepts]: Start accepts. Automaton has 1388 states and 4100 transitions. Word has length 26 [2021-05-21 20:00:11,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:00:11,173 INFO L482 AbstractCegarLoop]: Abstraction has 1388 states and 4100 transitions. [2021-05-21 20:00:11,173 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:00:11,173 INFO L276 IsEmpty]: Start isEmpty. Operand 1388 states and 4100 transitions. [2021-05-21 20:00:11,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 20:00:11,174 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:00:11,174 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:00:11,174 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable124 [2021-05-21 20:00:11,174 INFO L430 AbstractCegarLoop]: === Iteration 126 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 20:00:11,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:00:11,174 INFO L82 PathProgramCache]: Analyzing trace with hash -69351206, now seen corresponding path program 124 times [2021-05-21 20:00:11,174 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:00:11,175 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1111298375] [2021-05-21 20:00:11,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:00:11,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:00:11,233 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:00:11,234 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:00:11,234 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1111298375] [2021-05-21 20:00:11,234 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1111298375] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:00:11,234 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:00:11,234 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-21 20:00:11,234 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [971121084] [2021-05-21 20:00:11,234 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:00:11,234 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:00:11,234 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:00:11,234 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:00:11,234 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) [2021-05-21 20:00:11,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:00:11,419 INFO L93 Difference]: Finished difference Result 1568 states and 4567 transitions. [2021-05-21 20:00:11,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:00:11,420 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-05-21 20:00:11,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:00:11,421 INFO L225 Difference]: With dead ends: 1568 [2021-05-21 20:00:11,421 INFO L226 Difference]: Without dead ends: 1464 [2021-05-21 20:00:11,422 INFO L777 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 [2021-05-21 20:00:11,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1464 states. [2021-05-21 20:00:11,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1464 to 1391. [2021-05-21 20:00:11,435 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) [2021-05-21 20:00:11,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1391 states to 1391 states and 4109 transitions. [2021-05-21 20:00:11,446 INFO L78 Accepts]: Start accepts. Automaton has 1391 states and 4109 transitions. Word has length 26 [2021-05-21 20:00:11,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:00:11,446 INFO L482 AbstractCegarLoop]: Abstraction has 1391 states and 4109 transitions. [2021-05-21 20:00:11,446 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:00:11,446 INFO L276 IsEmpty]: Start isEmpty. Operand 1391 states and 4109 transitions. [2021-05-21 20:00:11,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 20:00:11,448 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:00:11,448 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:00:11,448 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable125 [2021-05-21 20:00:11,448 INFO L430 AbstractCegarLoop]: === Iteration 127 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 20:00:11,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:00:11,448 INFO L82 PathProgramCache]: Analyzing trace with hash -1538062436, now seen corresponding path program 125 times [2021-05-21 20:00:11,448 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:00:11,448 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1718901179] [2021-05-21 20:00:11,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:00:11,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:00:11,511 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:00:11,511 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:00:11,511 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1718901179] [2021-05-21 20:00:11,511 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1718901179] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:00:11,511 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:00:11,511 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-21 20:00:11,511 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1447982120] [2021-05-21 20:00:11,511 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:00:11,511 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:00:11,511 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:00:11,512 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:00:11,512 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) [2021-05-21 20:00:11,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:00:11,680 INFO L93 Difference]: Finished difference Result 1536 states and 4479 transitions. [2021-05-21 20:00:11,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:00:11,681 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-05-21 20:00:11,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:00:11,683 INFO L225 Difference]: With dead ends: 1536 [2021-05-21 20:00:11,683 INFO L226 Difference]: Without dead ends: 1457 [2021-05-21 20:00:11,683 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 53.5ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:00:11,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1457 states. [2021-05-21 20:00:11,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1457 to 1392. [2021-05-21 20:00:11,695 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) [2021-05-21 20:00:11,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1392 states to 1392 states and 4113 transitions. [2021-05-21 20:00:11,697 INFO L78 Accepts]: Start accepts. Automaton has 1392 states and 4113 transitions. Word has length 26 [2021-05-21 20:00:11,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:00:11,697 INFO L482 AbstractCegarLoop]: Abstraction has 1392 states and 4113 transitions. [2021-05-21 20:00:11,697 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:00:11,697 INFO L276 IsEmpty]: Start isEmpty. Operand 1392 states and 4113 transitions. [2021-05-21 20:00:11,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 20:00:11,699 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:00:11,699 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:00:11,699 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable126 [2021-05-21 20:00:11,699 INFO L430 AbstractCegarLoop]: === Iteration 128 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 20:00:11,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:00:11,700 INFO L82 PathProgramCache]: Analyzing trace with hash -2111459712, now seen corresponding path program 126 times [2021-05-21 20:00:11,700 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:00:11,700 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1481521354] [2021-05-21 20:00:11,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:00:11,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:00:11,760 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:00:11,761 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:00:11,761 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1481521354] [2021-05-21 20:00:11,761 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1481521354] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:00:11,761 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:00:11,761 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-21 20:00:11,761 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1290714342] [2021-05-21 20:00:11,761 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:00:11,761 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:00:11,761 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:00:11,761 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:00:11,762 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) [2021-05-21 20:00:11,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:00:11,931 INFO L93 Difference]: Finished difference Result 1543 states and 4492 transitions. [2021-05-21 20:00:11,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:00:11,931 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 [2021-05-21 20:00:11,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:00:11,933 INFO L225 Difference]: With dead ends: 1543 [2021-05-21 20:00:11,933 INFO L226 Difference]: Without dead ends: 1460 [2021-05-21 20:00:11,933 INFO L777 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 [2021-05-21 20:00:11,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1460 states. [2021-05-21 20:00:11,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1460 to 1393. [2021-05-21 20:00:11,945 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) [2021-05-21 20:00:11,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1393 states to 1393 states and 4115 transitions. [2021-05-21 20:00:11,947 INFO L78 Accepts]: Start accepts. Automaton has 1393 states and 4115 transitions. Word has length 26 [2021-05-21 20:00:11,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:00:11,947 INFO L482 AbstractCegarLoop]: Abstraction has 1393 states and 4115 transitions. [2021-05-21 20:00:11,947 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:00:11,947 INFO L276 IsEmpty]: Start isEmpty. Operand 1393 states and 4115 transitions. [2021-05-21 20:00:11,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 20:00:11,949 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:00:11,949 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:00:11,949 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable127 [2021-05-21 20:00:11,949 INFO L430 AbstractCegarLoop]: === Iteration 129 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 20:00:11,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:00:11,949 INFO L82 PathProgramCache]: Analyzing trace with hash -1524908864, now seen corresponding path program 127 times [2021-05-21 20:00:11,949 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:00:11,949 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1502453379] [2021-05-21 20:00:11,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:00:11,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:00:12,007 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:00:12,007 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:00:12,007 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1502453379] [2021-05-21 20:00:12,007 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1502453379] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:00:12,007 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:00:12,007 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-21 20:00:12,007 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [86898611] [2021-05-21 20:00:12,007 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:00:12,007 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:00:12,008 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:00:12,008 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:00:12,008 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) [2021-05-21 20:00:12,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:00:12,179 INFO L93 Difference]: Finished difference Result 1572 states and 4601 transitions. [2021-05-21 20:00:12,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:00:12,180 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-05-21 20:00:12,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:00:12,182 INFO L225 Difference]: With dead ends: 1572 [2021-05-21 20:00:12,182 INFO L226 Difference]: Without dead ends: 1475 [2021-05-21 20:00:12,182 INFO L777 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 [2021-05-21 20:00:12,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1475 states. [2021-05-21 20:00:12,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1475 to 1390. [2021-05-21 20:00:12,195 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) [2021-05-21 20:00:12,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1390 states to 1390 states and 4104 transitions. [2021-05-21 20:00:12,197 INFO L78 Accepts]: Start accepts. Automaton has 1390 states and 4104 transitions. Word has length 26 [2021-05-21 20:00:12,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:00:12,197 INFO L482 AbstractCegarLoop]: Abstraction has 1390 states and 4104 transitions. [2021-05-21 20:00:12,197 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) [2021-05-21 20:00:12,197 INFO L276 IsEmpty]: Start isEmpty. Operand 1390 states and 4104 transitions. [2021-05-21 20:00:12,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 20:00:12,198 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:00:12,198 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:00:12,198 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable128 [2021-05-21 20:00:12,198 INFO L430 AbstractCegarLoop]: === Iteration 130 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 20:00:12,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:00:12,199 INFO L82 PathProgramCache]: Analyzing trace with hash 2057990590, now seen corresponding path program 128 times [2021-05-21 20:00:12,199 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:00:12,199 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [890114557] [2021-05-21 20:00:12,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:00:12,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:00:12,263 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:00:12,263 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:00:12,263 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [890114557] [2021-05-21 20:00:12,263 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [890114557] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:00:12,263 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:00:12,263 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-21 20:00:12,263 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1035916864] [2021-05-21 20:00:12,264 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:00:12,264 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:00:12,264 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:00:12,264 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:00:12,264 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) [2021-05-21 20:00:12,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:00:12,433 INFO L93 Difference]: Finished difference Result 1586 states and 4616 transitions. [2021-05-21 20:00:12,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:00:12,433 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-05-21 20:00:12,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:00:12,435 INFO L225 Difference]: With dead ends: 1586 [2021-05-21 20:00:12,435 INFO L226 Difference]: Without dead ends: 1498 [2021-05-21 20:00:12,435 INFO L777 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 [2021-05-21 20:00:12,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1498 states. [2021-05-21 20:00:12,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1498 to 1391. [2021-05-21 20:00:12,448 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) [2021-05-21 20:00:12,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1391 states to 1391 states and 4105 transitions. [2021-05-21 20:00:12,451 INFO L78 Accepts]: Start accepts. Automaton has 1391 states and 4105 transitions. Word has length 26 [2021-05-21 20:00:12,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:00:12,451 INFO L482 AbstractCegarLoop]: Abstraction has 1391 states and 4105 transitions. [2021-05-21 20:00:12,451 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:00:12,451 INFO L276 IsEmpty]: Start isEmpty. Operand 1391 states and 4105 transitions. [2021-05-21 20:00:12,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 20:00:12,452 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:00:12,452 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:00:12,452 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable129 [2021-05-21 20:00:12,452 INFO L430 AbstractCegarLoop]: === Iteration 131 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 20:00:12,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:00:12,452 INFO L82 PathProgramCache]: Analyzing trace with hash -1145603780, now seen corresponding path program 129 times [2021-05-21 20:00:12,452 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:00:12,453 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1453148733] [2021-05-21 20:00:12,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:00:12,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:00:12,515 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:00:12,516 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:00:12,516 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1453148733] [2021-05-21 20:00:12,516 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1453148733] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:00:12,516 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:00:12,516 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-21 20:00:12,516 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [942521659] [2021-05-21 20:00:12,516 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:00:12,516 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:00:12,516 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:00:12,516 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:00:12,517 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) [2021-05-21 20:00:12,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:00:12,684 INFO L93 Difference]: Finished difference Result 1597 states and 4669 transitions. [2021-05-21 20:00:12,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:00:12,684 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-05-21 20:00:12,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:00:12,686 INFO L225 Difference]: With dead ends: 1597 [2021-05-21 20:00:12,686 INFO L226 Difference]: Without dead ends: 1518 [2021-05-21 20:00:12,686 INFO L777 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 [2021-05-21 20:00:12,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1518 states. [2021-05-21 20:00:12,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1518 to 1397. [2021-05-21 20:00:12,699 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) [2021-05-21 20:00:12,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1397 states to 1397 states and 4125 transitions. [2021-05-21 20:00:12,701 INFO L78 Accepts]: Start accepts. Automaton has 1397 states and 4125 transitions. Word has length 26 [2021-05-21 20:00:12,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:00:12,701 INFO L482 AbstractCegarLoop]: Abstraction has 1397 states and 4125 transitions. [2021-05-21 20:00:12,701 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:00:12,701 INFO L276 IsEmpty]: Start isEmpty. Operand 1397 states and 4125 transitions. [2021-05-21 20:00:12,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 20:00:12,703 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:00:12,703 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:00:12,703 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130 [2021-05-21 20:00:12,703 INFO L430 AbstractCegarLoop]: === Iteration 132 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 20:00:12,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:00:12,703 INFO L82 PathProgramCache]: Analyzing trace with hash -276159172, now seen corresponding path program 130 times [2021-05-21 20:00:12,703 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:00:12,703 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1301754870] [2021-05-21 20:00:12,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:00:12,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:00:12,763 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:00:12,764 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:00:12,764 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1301754870] [2021-05-21 20:00:12,764 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1301754870] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:00:12,764 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:00:12,764 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-21 20:00:12,764 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [309096126] [2021-05-21 20:00:12,764 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:00:12,764 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:00:12,764 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:00:12,764 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:00:12,764 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) [2021-05-21 20:00:12,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:00:12,947 INFO L93 Difference]: Finished difference Result 1624 states and 4728 transitions. [2021-05-21 20:00:12,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:00:12,947 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-05-21 20:00:12,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:00:12,949 INFO L225 Difference]: With dead ends: 1624 [2021-05-21 20:00:12,949 INFO L226 Difference]: Without dead ends: 1520 [2021-05-21 20:00:12,949 INFO L777 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 [2021-05-21 20:00:12,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1520 states. [2021-05-21 20:00:12,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1520 to 1388. [2021-05-21 20:00:12,969 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) [2021-05-21 20:00:12,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1388 states to 1388 states and 4091 transitions. [2021-05-21 20:00:12,971 INFO L78 Accepts]: Start accepts. Automaton has 1388 states and 4091 transitions. Word has length 26 [2021-05-21 20:00:12,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:00:12,971 INFO L482 AbstractCegarLoop]: Abstraction has 1388 states and 4091 transitions. [2021-05-21 20:00:12,972 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:00:12,972 INFO L276 IsEmpty]: Start isEmpty. Operand 1388 states and 4091 transitions. [2021-05-21 20:00:12,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 20:00:12,973 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:00:12,973 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:00:12,973 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131 [2021-05-21 20:00:12,973 INFO L430 AbstractCegarLoop]: === Iteration 133 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 20:00:12,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:00:12,973 INFO L82 PathProgramCache]: Analyzing trace with hash 1644524698, now seen corresponding path program 131 times [2021-05-21 20:00:12,973 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:00:12,973 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [829321617] [2021-05-21 20:00:12,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:00:12,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:00:13,037 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:00:13,037 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:00:13,037 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [829321617] [2021-05-21 20:00:13,037 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [829321617] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:00:13,037 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:00:13,037 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-21 20:00:13,037 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1480009879] [2021-05-21 20:00:13,038 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:00:13,038 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:00:13,038 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:00:13,038 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:00:13,038 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) [2021-05-21 20:00:13,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:00:13,202 INFO L93 Difference]: Finished difference Result 1580 states and 4623 transitions. [2021-05-21 20:00:13,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:00:13,202 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-05-21 20:00:13,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:00:13,204 INFO L225 Difference]: With dead ends: 1580 [2021-05-21 20:00:13,204 INFO L226 Difference]: Without dead ends: 1492 [2021-05-21 20:00:13,205 INFO L777 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 [2021-05-21 20:00:13,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1492 states. [2021-05-21 20:00:13,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1492 to 1389. [2021-05-21 20:00:13,217 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) [2021-05-21 20:00:13,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1389 states to 1389 states and 4096 transitions. [2021-05-21 20:00:13,219 INFO L78 Accepts]: Start accepts. Automaton has 1389 states and 4096 transitions. Word has length 26 [2021-05-21 20:00:13,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:00:13,219 INFO L482 AbstractCegarLoop]: Abstraction has 1389 states and 4096 transitions. [2021-05-21 20:00:13,219 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:00:13,219 INFO L276 IsEmpty]: Start isEmpty. Operand 1389 states and 4096 transitions. [2021-05-21 20:00:13,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 20:00:13,221 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:00:13,221 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:00:13,221 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable132 [2021-05-21 20:00:13,221 INFO L430 AbstractCegarLoop]: === Iteration 134 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 20:00:13,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:00:13,221 INFO L82 PathProgramCache]: Analyzing trace with hash -25644290, now seen corresponding path program 132 times [2021-05-21 20:00:13,221 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:00:13,221 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [918595364] [2021-05-21 20:00:13,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:00:13,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:00:13,276 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:00:13,276 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:00:13,276 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [918595364] [2021-05-21 20:00:13,276 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [918595364] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:00:13,276 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:00:13,276 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-21 20:00:13,276 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1579326217] [2021-05-21 20:00:13,276 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:00:13,276 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:00:13,276 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:00:13,276 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:00:13,276 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) [2021-05-21 20:00:13,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:00:13,433 INFO L93 Difference]: Finished difference Result 1516 states and 4425 transitions. [2021-05-21 20:00:13,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:00:13,433 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-05-21 20:00:13,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:00:13,435 INFO L225 Difference]: With dead ends: 1516 [2021-05-21 20:00:13,435 INFO L226 Difference]: Without dead ends: 1437 [2021-05-21 20:00:13,435 INFO L777 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 [2021-05-21 20:00:13,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1437 states. [2021-05-21 20:00:13,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1437 to 1388. [2021-05-21 20:00:13,447 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) [2021-05-21 20:00:13,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1388 states to 1388 states and 4092 transitions. [2021-05-21 20:00:13,449 INFO L78 Accepts]: Start accepts. Automaton has 1388 states and 4092 transitions. Word has length 26 [2021-05-21 20:00:13,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:00:13,449 INFO L482 AbstractCegarLoop]: Abstraction has 1388 states and 4092 transitions. [2021-05-21 20:00:13,449 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) [2021-05-21 20:00:13,450 INFO L276 IsEmpty]: Start isEmpty. Operand 1388 states and 4092 transitions. [2021-05-21 20:00:13,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 20:00:13,451 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:00:13,451 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:00:13,451 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable133 [2021-05-21 20:00:13,451 INFO L430 AbstractCegarLoop]: === Iteration 135 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 20:00:13,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:00:13,451 INFO L82 PathProgramCache]: Analyzing trace with hash -599041566, now seen corresponding path program 133 times [2021-05-21 20:00:13,451 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:00:13,451 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1610027908] [2021-05-21 20:00:13,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:00:13,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:00:13,524 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:00:13,524 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:00:13,524 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1610027908] [2021-05-21 20:00:13,524 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1610027908] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:00:13,524 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:00:13,524 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-21 20:00:13,524 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [18876210] [2021-05-21 20:00:13,525 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:00:13,525 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:00:13,525 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:00:13,525 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:00:13,525 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) [2021-05-21 20:00:13,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:00:13,694 INFO L93 Difference]: Finished difference Result 1536 states and 4461 transitions. [2021-05-21 20:00:13,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:00:13,695 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-05-21 20:00:13,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:00:13,696 INFO L225 Difference]: With dead ends: 1536 [2021-05-21 20:00:13,696 INFO L226 Difference]: Without dead ends: 1453 [2021-05-21 20:00:13,697 INFO L777 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 [2021-05-21 20:00:13,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1453 states. [2021-05-21 20:00:13,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1453 to 1386. [2021-05-21 20:00:13,709 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) [2021-05-21 20:00:13,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1386 states to 1386 states and 4085 transitions. [2021-05-21 20:00:13,711 INFO L78 Accepts]: Start accepts. Automaton has 1386 states and 4085 transitions. Word has length 26 [2021-05-21 20:00:13,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:00:13,711 INFO L482 AbstractCegarLoop]: Abstraction has 1386 states and 4085 transitions. [2021-05-21 20:00:13,711 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:00:13,711 INFO L276 IsEmpty]: Start isEmpty. Operand 1386 states and 4085 transitions. [2021-05-21 20:00:13,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 20:00:13,712 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:00:13,712 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:00:13,712 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable134 [2021-05-21 20:00:13,712 INFO L430 AbstractCegarLoop]: === Iteration 136 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 20:00:13,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:00:13,713 INFO L82 PathProgramCache]: Analyzing trace with hash -1417788836, now seen corresponding path program 134 times [2021-05-21 20:00:13,713 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:00:13,713 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [347046458] [2021-05-21 20:00:13,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:00:13,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:00:13,769 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:00:13,770 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:00:13,770 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [347046458] [2021-05-21 20:00:13,770 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [347046458] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:00:13,770 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:00:13,770 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-21 20:00:13,770 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [491418896] [2021-05-21 20:00:13,770 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:00:13,770 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:00:13,770 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:00:13,770 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:00:13,770 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) [2021-05-21 20:00:13,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:00:13,933 INFO L93 Difference]: Finished difference Result 1582 states and 4605 transitions. [2021-05-21 20:00:13,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:00:13,933 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-05-21 20:00:13,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:00:13,935 INFO L225 Difference]: With dead ends: 1582 [2021-05-21 20:00:13,935 INFO L226 Difference]: Without dead ends: 1497 [2021-05-21 20:00:13,935 INFO L777 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 [2021-05-21 20:00:13,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1497 states. [2021-05-21 20:00:13,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1497 to 1383. [2021-05-21 20:00:13,947 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) [2021-05-21 20:00:13,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1383 states to 1383 states and 4072 transitions. [2021-05-21 20:00:13,949 INFO L78 Accepts]: Start accepts. Automaton has 1383 states and 4072 transitions. Word has length 26 [2021-05-21 20:00:13,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:00:13,949 INFO L482 AbstractCegarLoop]: Abstraction has 1383 states and 4072 transitions. [2021-05-21 20:00:13,949 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:00:13,949 INFO L276 IsEmpty]: Start isEmpty. Operand 1383 states and 4072 transitions. [2021-05-21 20:00:13,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 20:00:13,950 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:00:13,950 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:00:13,950 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable135 [2021-05-21 20:00:13,950 INFO L430 AbstractCegarLoop]: === Iteration 137 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 20:00:13,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:00:13,951 INFO L82 PathProgramCache]: Analyzing trace with hash -1848108702, now seen corresponding path program 135 times [2021-05-21 20:00:13,951 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:00:13,951 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1843797931] [2021-05-21 20:00:13,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:00:13,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:00:14,007 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:00:14,008 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:00:14,008 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1843797931] [2021-05-21 20:00:14,008 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1843797931] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:00:14,008 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:00:14,008 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-21 20:00:14,008 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [99557712] [2021-05-21 20:00:14,008 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:00:14,008 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:00:14,008 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:00:14,008 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:00:14,008 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) [2021-05-21 20:00:14,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:00:14,167 INFO L93 Difference]: Finished difference Result 1557 states and 4506 transitions. [2021-05-21 20:00:14,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:00:14,168 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-05-21 20:00:14,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:00:14,169 INFO L225 Difference]: With dead ends: 1557 [2021-05-21 20:00:14,169 INFO L226 Difference]: Without dead ends: 1464 [2021-05-21 20:00:14,169 INFO L777 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 [2021-05-21 20:00:14,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1464 states. [2021-05-21 20:00:14,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1464 to 1372. [2021-05-21 20:00:14,181 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) [2021-05-21 20:00:14,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1372 states to 1372 states and 4050 transitions. [2021-05-21 20:00:14,183 INFO L78 Accepts]: Start accepts. Automaton has 1372 states and 4050 transitions. Word has length 26 [2021-05-21 20:00:14,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:00:14,183 INFO L482 AbstractCegarLoop]: Abstraction has 1372 states and 4050 transitions. [2021-05-21 20:00:14,183 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:00:14,183 INFO L276 IsEmpty]: Start isEmpty. Operand 1372 states and 4050 transitions. [2021-05-21 20:00:14,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 20:00:14,185 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:00:14,185 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:00:14,185 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable136 [2021-05-21 20:00:14,185 INFO L430 AbstractCegarLoop]: === Iteration 138 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 20:00:14,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:00:14,185 INFO L82 PathProgramCache]: Analyzing trace with hash -782554082, now seen corresponding path program 136 times [2021-05-21 20:00:14,185 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:00:14,185 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1746648875] [2021-05-21 20:00:14,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:00:14,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:00:14,227 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:00:14,227 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:00:14,227 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1746648875] [2021-05-21 20:00:14,228 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1746648875] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:00:14,228 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:00:14,228 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-05-21 20:00:14,228 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [778819448] [2021-05-21 20:00:14,229 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:00:14,229 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:00:14,229 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:00:14,229 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:00:14,229 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) [2021-05-21 20:00:14,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:00:14,332 INFO L93 Difference]: Finished difference Result 1654 states and 4846 transitions. [2021-05-21 20:00:14,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:00:14,332 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 [2021-05-21 20:00:14,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:00:14,334 INFO L225 Difference]: With dead ends: 1654 [2021-05-21 20:00:14,334 INFO L226 Difference]: Without dead ends: 1575 [2021-05-21 20:00:14,335 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 30.9ms TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:00:14,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1575 states. [2021-05-21 20:00:14,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1575 to 1438. [2021-05-21 20:00:14,368 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) [2021-05-21 20:00:14,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1438 states to 1438 states and 4247 transitions. [2021-05-21 20:00:14,370 INFO L78 Accepts]: Start accepts. Automaton has 1438 states and 4247 transitions. Word has length 26 [2021-05-21 20:00:14,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:00:14,370 INFO L482 AbstractCegarLoop]: Abstraction has 1438 states and 4247 transitions. [2021-05-21 20:00:14,370 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) [2021-05-21 20:00:14,371 INFO L276 IsEmpty]: Start isEmpty. Operand 1438 states and 4247 transitions. [2021-05-21 20:00:14,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 20:00:14,372 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:00:14,372 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:00:14,372 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable137 [2021-05-21 20:00:14,372 INFO L430 AbstractCegarLoop]: === Iteration 139 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 20:00:14,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:00:14,372 INFO L82 PathProgramCache]: Analyzing trace with hash 440133670, now seen corresponding path program 137 times [2021-05-21 20:00:14,372 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:00:14,373 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1580985069] [2021-05-21 20:00:14,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:00:14,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:00:14,421 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:00:14,421 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:00:14,421 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1580985069] [2021-05-21 20:00:14,421 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1580985069] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:00:14,421 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:00:14,421 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:00:14,421 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [849615622] [2021-05-21 20:00:14,421 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-21 20:00:14,421 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:00:14,422 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-21 20:00:14,422 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-05-21 20:00:14,422 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) [2021-05-21 20:00:14,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:00:14,547 INFO L93 Difference]: Finished difference Result 1749 states and 5118 transitions. [2021-05-21 20:00:14,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-21 20:00:14,548 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 [2021-05-21 20:00:14,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:00:14,549 INFO L225 Difference]: With dead ends: 1749 [2021-05-21 20:00:14,550 INFO L226 Difference]: Without dead ends: 1598 [2021-05-21 20:00:14,550 INFO L777 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 [2021-05-21 20:00:14,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1598 states. [2021-05-21 20:00:14,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1598 to 1426. [2021-05-21 20:00:14,563 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) [2021-05-21 20:00:14,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1426 states to 1426 states and 4209 transitions. [2021-05-21 20:00:14,565 INFO L78 Accepts]: Start accepts. Automaton has 1426 states and 4209 transitions. Word has length 26 [2021-05-21 20:00:14,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:00:14,565 INFO L482 AbstractCegarLoop]: Abstraction has 1426 states and 4209 transitions. [2021-05-21 20:00:14,565 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) [2021-05-21 20:00:14,565 INFO L276 IsEmpty]: Start isEmpty. Operand 1426 states and 4209 transitions. [2021-05-21 20:00:14,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 20:00:14,566 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:00:14,566 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:00:14,566 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable138 [2021-05-21 20:00:14,566 INFO L430 AbstractCegarLoop]: === Iteration 140 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 20:00:14,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:00:14,566 INFO L82 PathProgramCache]: Analyzing trace with hash 1794672444, now seen corresponding path program 138 times [2021-05-21 20:00:14,567 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:00:14,567 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1409480450] [2021-05-21 20:00:14,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:00:14,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:00:14,609 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:00:14,610 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:00:14,610 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1409480450] [2021-05-21 20:00:14,610 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1409480450] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:00:14,610 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:00:14,610 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:00:14,610 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120407523] [2021-05-21 20:00:14,610 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-21 20:00:14,610 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:00:14,610 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-21 20:00:14,610 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-05-21 20:00:14,610 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) [2021-05-21 20:00:14,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:00:14,734 INFO L93 Difference]: Finished difference Result 1711 states and 4999 transitions. [2021-05-21 20:00:14,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-21 20:00:14,735 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 [2021-05-21 20:00:14,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:00:14,736 INFO L225 Difference]: With dead ends: 1711 [2021-05-21 20:00:14,736 INFO L226 Difference]: Without dead ends: 1632 [2021-05-21 20:00:14,737 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 35.4ms TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-05-21 20:00:14,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1632 states. [2021-05-21 20:00:14,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1632 to 1428. [2021-05-21 20:00:14,749 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) [2021-05-21 20:00:14,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1428 states to 1428 states and 4214 transitions. [2021-05-21 20:00:14,751 INFO L78 Accepts]: Start accepts. Automaton has 1428 states and 4214 transitions. Word has length 26 [2021-05-21 20:00:14,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:00:14,751 INFO L482 AbstractCegarLoop]: Abstraction has 1428 states and 4214 transitions. [2021-05-21 20:00:14,751 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) [2021-05-21 20:00:14,751 INFO L276 IsEmpty]: Start isEmpty. Operand 1428 states and 4214 transitions. [2021-05-21 20:00:14,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 20:00:14,753 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:00:14,753 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:00:14,753 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable139 [2021-05-21 20:00:14,753 INFO L430 AbstractCegarLoop]: === Iteration 141 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 20:00:14,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:00:14,753 INFO L82 PathProgramCache]: Analyzing trace with hash -1277607100, now seen corresponding path program 139 times [2021-05-21 20:00:14,753 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:00:14,753 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [359649353] [2021-05-21 20:00:14,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:00:14,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:00:14,798 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:00:14,798 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:00:14,798 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [359649353] [2021-05-21 20:00:14,798 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [359649353] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:00:14,798 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:00:14,798 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:00:14,798 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [437894452] [2021-05-21 20:00:14,798 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-21 20:00:14,798 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:00:14,798 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-21 20:00:14,798 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-05-21 20:00:14,798 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) [2021-05-21 20:00:14,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:00:14,928 INFO L93 Difference]: Finished difference Result 1743 states and 5115 transitions. [2021-05-21 20:00:14,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-21 20:00:14,929 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 [2021-05-21 20:00:14,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:00:14,931 INFO L225 Difference]: With dead ends: 1743 [2021-05-21 20:00:14,931 INFO L226 Difference]: Without dead ends: 1660 [2021-05-21 20:00:14,931 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 37.5ms TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-05-21 20:00:14,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1660 states. [2021-05-21 20:00:14,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1660 to 1428. [2021-05-21 20:00:14,945 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) [2021-05-21 20:00:14,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1428 states to 1428 states and 4212 transitions. [2021-05-21 20:00:14,946 INFO L78 Accepts]: Start accepts. Automaton has 1428 states and 4212 transitions. Word has length 26 [2021-05-21 20:00:14,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:00:14,947 INFO L482 AbstractCegarLoop]: Abstraction has 1428 states and 4212 transitions. [2021-05-21 20:00:14,947 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) [2021-05-21 20:00:14,947 INFO L276 IsEmpty]: Start isEmpty. Operand 1428 states and 4212 transitions. [2021-05-21 20:00:14,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 20:00:14,948 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:00:14,948 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:00:14,948 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable140 [2021-05-21 20:00:14,948 INFO L430 AbstractCegarLoop]: === Iteration 142 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 20:00:14,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:00:14,948 INFO L82 PathProgramCache]: Analyzing trace with hash 1532456486, now seen corresponding path program 140 times [2021-05-21 20:00:14,948 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:00:14,948 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [60417600] [2021-05-21 20:00:14,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:00:14,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:00:15,009 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:00:15,009 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:00:15,009 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [60417600] [2021-05-21 20:00:15,010 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [60417600] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:00:15,010 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:00:15,010 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:00:15,010 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2057045698] [2021-05-21 20:00:15,010 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-21 20:00:15,010 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:00:15,010 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-21 20:00:15,010 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-05-21 20:00:15,010 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) [2021-05-21 20:00:15,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:00:15,143 INFO L93 Difference]: Finished difference Result 1741 states and 5077 transitions. [2021-05-21 20:00:15,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-21 20:00:15,143 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 [2021-05-21 20:00:15,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:00:15,145 INFO L225 Difference]: With dead ends: 1741 [2021-05-21 20:00:15,145 INFO L226 Difference]: Without dead ends: 1630 [2021-05-21 20:00:15,145 INFO L777 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 [2021-05-21 20:00:15,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1630 states. [2021-05-21 20:00:15,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1630 to 1396. [2021-05-21 20:00:15,158 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) [2021-05-21 20:00:15,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1396 states to 1396 states and 4116 transitions. [2021-05-21 20:00:15,160 INFO L78 Accepts]: Start accepts. Automaton has 1396 states and 4116 transitions. Word has length 26 [2021-05-21 20:00:15,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:00:15,160 INFO L482 AbstractCegarLoop]: Abstraction has 1396 states and 4116 transitions. [2021-05-21 20:00:15,160 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) [2021-05-21 20:00:15,160 INFO L276 IsEmpty]: Start isEmpty. Operand 1396 states and 4116 transitions. [2021-05-21 20:00:15,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 20:00:15,162 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:00:15,162 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:00:15,162 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable141 [2021-05-21 20:00:15,162 INFO L430 AbstractCegarLoop]: === Iteration 143 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 20:00:15,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:00:15,162 INFO L82 PathProgramCache]: Analyzing trace with hash -1774043234, now seen corresponding path program 141 times [2021-05-21 20:00:15,162 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:00:15,162 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1650268928] [2021-05-21 20:00:15,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:00:15,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:00:15,210 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:00:15,210 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:00:15,210 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1650268928] [2021-05-21 20:00:15,210 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1650268928] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:00:15,210 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:00:15,210 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:00:15,210 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1405924709] [2021-05-21 20:00:15,211 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-21 20:00:15,211 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:00:15,211 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-21 20:00:15,211 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-05-21 20:00:15,211 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) [2021-05-21 20:00:15,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:00:15,341 INFO L93 Difference]: Finished difference Result 1586 states and 4638 transitions. [2021-05-21 20:00:15,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-21 20:00:15,341 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 [2021-05-21 20:00:15,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:00:15,343 INFO L225 Difference]: With dead ends: 1586 [2021-05-21 20:00:15,343 INFO L226 Difference]: Without dead ends: 1507 [2021-05-21 20:00:15,343 INFO L777 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 [2021-05-21 20:00:15,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1507 states. [2021-05-21 20:00:15,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1507 to 1406. [2021-05-21 20:00:15,356 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) [2021-05-21 20:00:15,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1406 states to 1406 states and 4146 transitions. [2021-05-21 20:00:15,357 INFO L78 Accepts]: Start accepts. Automaton has 1406 states and 4146 transitions. Word has length 26 [2021-05-21 20:00:15,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:00:15,358 INFO L482 AbstractCegarLoop]: Abstraction has 1406 states and 4146 transitions. [2021-05-21 20:00:15,358 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) [2021-05-21 20:00:15,358 INFO L276 IsEmpty]: Start isEmpty. Operand 1406 states and 4146 transitions. [2021-05-21 20:00:15,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 20:00:15,359 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:00:15,359 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:00:15,359 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable142 [2021-05-21 20:00:15,359 INFO L430 AbstractCegarLoop]: === Iteration 144 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 20:00:15,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:00:15,359 INFO L82 PathProgramCache]: Analyzing trace with hash -904598626, now seen corresponding path program 142 times [2021-05-21 20:00:15,359 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:00:15,359 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1768104523] [2021-05-21 20:00:15,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:00:15,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:00:15,409 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:00:15,410 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:00:15,410 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1768104523] [2021-05-21 20:00:15,410 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1768104523] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:00:15,410 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:00:15,410 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:00:15,410 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [740017579] [2021-05-21 20:00:15,410 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-21 20:00:15,410 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:00:15,410 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-21 20:00:15,410 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-05-21 20:00:15,410 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) [2021-05-21 20:00:15,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:00:15,534 INFO L93 Difference]: Finished difference Result 1622 states and 4736 transitions. [2021-05-21 20:00:15,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-21 20:00:15,534 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 [2021-05-21 20:00:15,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:00:15,536 INFO L225 Difference]: With dead ends: 1622 [2021-05-21 20:00:15,536 INFO L226 Difference]: Without dead ends: 1518 [2021-05-21 20:00:15,536 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 42.2ms TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-05-21 20:00:15,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1518 states. [2021-05-21 20:00:15,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1518 to 1422. [2021-05-21 20:00:15,548 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) [2021-05-21 20:00:15,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1422 states to 1422 states and 4195 transitions. [2021-05-21 20:00:15,550 INFO L78 Accepts]: Start accepts. Automaton has 1422 states and 4195 transitions. Word has length 26 [2021-05-21 20:00:15,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:00:15,550 INFO L482 AbstractCegarLoop]: Abstraction has 1422 states and 4195 transitions. [2021-05-21 20:00:15,550 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) [2021-05-21 20:00:15,550 INFO L276 IsEmpty]: Start isEmpty. Operand 1422 states and 4195 transitions. [2021-05-21 20:00:15,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 20:00:15,552 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:00:15,552 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:00:15,552 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable143 [2021-05-21 20:00:15,552 INFO L430 AbstractCegarLoop]: === Iteration 145 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 20:00:15,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:00:15,552 INFO L82 PathProgramCache]: Analyzing trace with hash 1921657440, now seen corresponding path program 143 times [2021-05-21 20:00:15,552 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:00:15,552 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [518092768] [2021-05-21 20:00:15,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:00:15,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:00:15,610 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:00:15,610 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:00:15,610 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [518092768] [2021-05-21 20:00:15,611 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [518092768] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:00:15,611 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:00:15,611 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-21 20:00:15,611 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [468169005] [2021-05-21 20:00:15,611 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:00:15,611 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:00:15,611 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:00:15,611 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:00:15,611 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) [2021-05-21 20:00:15,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:00:15,789 INFO L93 Difference]: Finished difference Result 1651 states and 4814 transitions. [2021-05-21 20:00:15,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:00:15,789 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 [2021-05-21 20:00:15,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:00:15,791 INFO L225 Difference]: With dead ends: 1651 [2021-05-21 20:00:15,791 INFO L226 Difference]: Without dead ends: 1572 [2021-05-21 20:00:15,791 INFO L777 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 [2021-05-21 20:00:15,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1572 states. [2021-05-21 20:00:15,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1572 to 1446. [2021-05-21 20:00:15,804 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) [2021-05-21 20:00:15,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1446 states to 1446 states and 4261 transitions. [2021-05-21 20:00:15,806 INFO L78 Accepts]: Start accepts. Automaton has 1446 states and 4261 transitions. Word has length 26 [2021-05-21 20:00:15,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:00:15,806 INFO L482 AbstractCegarLoop]: Abstraction has 1446 states and 4261 transitions. [2021-05-21 20:00:15,806 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:00:15,806 INFO L276 IsEmpty]: Start isEmpty. Operand 1446 states and 4261 transitions. [2021-05-21 20:00:15,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 20:00:15,807 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:00:15,807 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:00:15,807 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable144 [2021-05-21 20:00:15,808 INFO L430 AbstractCegarLoop]: === Iteration 146 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 20:00:15,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:00:15,808 INFO L82 PathProgramCache]: Analyzing trace with hash 1348260164, now seen corresponding path program 144 times [2021-05-21 20:00:15,808 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:00:15,808 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1828735374] [2021-05-21 20:00:15,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:00:15,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:00:15,863 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:00:15,863 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:00:15,864 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1828735374] [2021-05-21 20:00:15,864 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1828735374] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:00:15,864 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:00:15,864 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-21 20:00:15,864 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1132729421] [2021-05-21 20:00:15,864 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:00:15,864 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:00:15,864 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:00:15,864 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:00:15,864 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) [2021-05-21 20:00:16,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:00:16,032 INFO L93 Difference]: Finished difference Result 1620 states and 4730 transitions. [2021-05-21 20:00:16,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:00:16,032 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 [2021-05-21 20:00:16,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:00:16,034 INFO L225 Difference]: With dead ends: 1620 [2021-05-21 20:00:16,034 INFO L226 Difference]: Without dead ends: 1509 [2021-05-21 20:00:16,034 INFO L777 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 [2021-05-21 20:00:16,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1509 states. [2021-05-21 20:00:16,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1509 to 1461. [2021-05-21 20:00:16,047 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) [2021-05-21 20:00:16,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1461 states to 1461 states and 4308 transitions. [2021-05-21 20:00:16,048 INFO L78 Accepts]: Start accepts. Automaton has 1461 states and 4308 transitions. Word has length 26 [2021-05-21 20:00:16,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:00:16,049 INFO L482 AbstractCegarLoop]: Abstraction has 1461 states and 4308 transitions. [2021-05-21 20:00:16,049 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:00:16,049 INFO L276 IsEmpty]: Start isEmpty. Operand 1461 states and 4308 transitions. [2021-05-21 20:00:16,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 20:00:16,050 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:00:16,050 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:00:16,050 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable145 [2021-05-21 20:00:16,050 INFO L430 AbstractCegarLoop]: === Iteration 147 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 20:00:16,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:00:16,050 INFO L82 PathProgramCache]: Analyzing trace with hash 1934811012, now seen corresponding path program 145 times [2021-05-21 20:00:16,050 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:00:16,050 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [181610769] [2021-05-21 20:00:16,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:00:16,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:00:16,111 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:00:16,111 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:00:16,111 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [181610769] [2021-05-21 20:00:16,111 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [181610769] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:00:16,111 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:00:16,111 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-21 20:00:16,111 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1725027880] [2021-05-21 20:00:16,112 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:00:16,112 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:00:16,112 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:00:16,112 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:00:16,112 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) [2021-05-21 20:00:16,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:00:16,273 INFO L93 Difference]: Finished difference Result 1737 states and 5065 transitions. [2021-05-21 20:00:16,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:00:16,273 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-05-21 20:00:16,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:00:16,276 INFO L225 Difference]: With dead ends: 1737 [2021-05-21 20:00:16,276 INFO L226 Difference]: Without dead ends: 1640 [2021-05-21 20:00:16,276 INFO L777 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 [2021-05-21 20:00:16,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1640 states. [2021-05-21 20:00:16,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1640 to 1487. [2021-05-21 20:00:16,290 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) [2021-05-21 20:00:16,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1487 states to 1487 states and 4396 transitions. [2021-05-21 20:00:16,292 INFO L78 Accepts]: Start accepts. Automaton has 1487 states and 4396 transitions. Word has length 26 [2021-05-21 20:00:16,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:00:16,293 INFO L482 AbstractCegarLoop]: Abstraction has 1487 states and 4396 transitions. [2021-05-21 20:00:16,293 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) [2021-05-21 20:00:16,293 INFO L276 IsEmpty]: Start isEmpty. Operand 1487 states and 4396 transitions. [2021-05-21 20:00:16,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 20:00:16,294 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:00:16,294 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:00:16,294 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable146 [2021-05-21 20:00:16,295 INFO L430 AbstractCegarLoop]: === Iteration 148 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 20:00:16,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:00:16,295 INFO L82 PathProgramCache]: Analyzing trace with hash 1222743170, now seen corresponding path program 146 times [2021-05-21 20:00:16,295 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:00:16,295 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [224629131] [2021-05-21 20:00:16,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:00:16,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:00:16,351 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:00:16,351 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:00:16,351 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [224629131] [2021-05-21 20:00:16,352 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [224629131] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:00:16,352 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:00:16,352 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-21 20:00:16,352 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1217807925] [2021-05-21 20:00:16,352 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:00:16,352 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:00:16,352 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:00:16,352 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:00:16,352 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) [2021-05-21 20:00:16,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:00:16,522 INFO L93 Difference]: Finished difference Result 1672 states and 4884 transitions. [2021-05-21 20:00:16,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:00:16,523 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-05-21 20:00:16,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:00:16,525 INFO L225 Difference]: With dead ends: 1672 [2021-05-21 20:00:16,525 INFO L226 Difference]: Without dead ends: 1584 [2021-05-21 20:00:16,525 INFO L777 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 [2021-05-21 20:00:16,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1584 states. [2021-05-21 20:00:16,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1584 to 1485. [2021-05-21 20:00:16,538 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) [2021-05-21 20:00:16,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1485 states to 1485 states and 4391 transitions. [2021-05-21 20:00:16,540 INFO L78 Accepts]: Start accepts. Automaton has 1485 states and 4391 transitions. Word has length 26 [2021-05-21 20:00:16,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:00:16,540 INFO L482 AbstractCegarLoop]: Abstraction has 1485 states and 4391 transitions. [2021-05-21 20:00:16,540 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:00:16,540 INFO L276 IsEmpty]: Start isEmpty. Operand 1485 states and 4391 transitions. [2021-05-21 20:00:16,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 20:00:16,542 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:00:16,542 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:00:16,542 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable147 [2021-05-21 20:00:16,542 INFO L430 AbstractCegarLoop]: === Iteration 149 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 20:00:16,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:00:16,542 INFO L82 PathProgramCache]: Analyzing trace with hash -1906471334, now seen corresponding path program 147 times [2021-05-21 20:00:16,542 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:00:16,542 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2053722133] [2021-05-21 20:00:16,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:00:16,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:00:16,598 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:00:16,598 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:00:16,598 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2053722133] [2021-05-21 20:00:16,598 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2053722133] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:00:16,598 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:00:16,598 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-21 20:00:16,598 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344200236] [2021-05-21 20:00:16,598 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:00:16,598 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:00:16,598 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:00:16,598 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:00:16,599 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) [2021-05-21 20:00:16,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:00:16,764 INFO L93 Difference]: Finished difference Result 1717 states and 5001 transitions. [2021-05-21 20:00:16,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:00:16,764 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 [2021-05-21 20:00:16,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:00:16,766 INFO L225 Difference]: With dead ends: 1717 [2021-05-21 20:00:16,766 INFO L226 Difference]: Without dead ends: 1584 [2021-05-21 20:00:16,766 INFO L777 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 [2021-05-21 20:00:16,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1584 states. [2021-05-21 20:00:16,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1584 to 1461. [2021-05-21 20:00:16,779 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) [2021-05-21 20:00:16,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1461 states to 1461 states and 4317 transitions. [2021-05-21 20:00:16,781 INFO L78 Accepts]: Start accepts. Automaton has 1461 states and 4317 transitions. Word has length 26 [2021-05-21 20:00:16,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:00:16,781 INFO L482 AbstractCegarLoop]: Abstraction has 1461 states and 4317 transitions. [2021-05-21 20:00:16,781 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) [2021-05-21 20:00:16,781 INFO L276 IsEmpty]: Start isEmpty. Operand 1461 states and 4317 transitions. [2021-05-21 20:00:16,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 20:00:16,783 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:00:16,783 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:00:16,783 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable148 [2021-05-21 20:00:16,783 INFO L430 AbstractCegarLoop]: === Iteration 150 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 20:00:16,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:00:16,783 INFO L82 PathProgramCache]: Analyzing trace with hash 1377180688, now seen corresponding path program 148 times [2021-05-21 20:00:16,783 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:00:16,783 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1458744185] [2021-05-21 20:00:16,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:00:16,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:00:16,848 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:00:16,849 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:00:16,849 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1458744185] [2021-05-21 20:00:16,849 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1458744185] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:00:16,849 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:00:16,849 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-21 20:00:16,849 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1669307906] [2021-05-21 20:00:16,849 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:00:16,849 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:00:16,849 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:00:16,849 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:00:16,849 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) [2021-05-21 20:00:17,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:00:17,012 INFO L93 Difference]: Finished difference Result 1724 states and 4996 transitions. [2021-05-21 20:00:17,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:00:17,012 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 [2021-05-21 20:00:17,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:00:17,014 INFO L225 Difference]: With dead ends: 1724 [2021-05-21 20:00:17,014 INFO L226 Difference]: Without dead ends: 1544 [2021-05-21 20:00:17,014 INFO L777 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 [2021-05-21 20:00:17,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1544 states. [2021-05-21 20:00:17,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1544 to 1422. [2021-05-21 20:00:17,026 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) [2021-05-21 20:00:17,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1422 states to 1422 states and 4176 transitions. [2021-05-21 20:00:17,028 INFO L78 Accepts]: Start accepts. Automaton has 1422 states and 4176 transitions. Word has length 26 [2021-05-21 20:00:17,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:00:17,028 INFO L482 AbstractCegarLoop]: Abstraction has 1422 states and 4176 transitions. [2021-05-21 20:00:17,028 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:00:17,028 INFO L276 IsEmpty]: Start isEmpty. Operand 1422 states and 4176 transitions. [2021-05-21 20:00:17,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 20:00:17,030 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:00:17,030 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:00:17,030 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable149 [2021-05-21 20:00:17,030 INFO L430 AbstractCegarLoop]: === Iteration 151 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 20:00:17,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:00:17,030 INFO L82 PathProgramCache]: Analyzing trace with hash 1039485756, now seen corresponding path program 149 times [2021-05-21 20:00:17,030 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:00:17,030 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1171053667] [2021-05-21 20:00:17,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:00:17,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:00:17,086 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:00:17,087 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:00:17,087 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1171053667] [2021-05-21 20:00:17,087 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1171053667] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:00:17,087 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:00:17,087 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-21 20:00:17,087 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [397467322] [2021-05-21 20:00:17,087 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:00:17,087 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:00:17,087 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:00:17,087 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:00:17,087 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) [2021-05-21 20:00:17,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:00:17,255 INFO L93 Difference]: Finished difference Result 1593 states and 4622 transitions. [2021-05-21 20:00:17,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:00:17,255 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-05-21 20:00:17,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:00:17,257 INFO L225 Difference]: With dead ends: 1593 [2021-05-21 20:00:17,257 INFO L226 Difference]: Without dead ends: 1514 [2021-05-21 20:00:17,257 INFO L777 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 [2021-05-21 20:00:17,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1514 states. [2021-05-21 20:00:17,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1514 to 1421. [2021-05-21 20:00:17,270 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) [2021-05-21 20:00:17,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1421 states to 1421 states and 4172 transitions. [2021-05-21 20:00:17,272 INFO L78 Accepts]: Start accepts. Automaton has 1421 states and 4172 transitions. Word has length 26 [2021-05-21 20:00:17,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:00:17,272 INFO L482 AbstractCegarLoop]: Abstraction has 1421 states and 4172 transitions. [2021-05-21 20:00:17,272 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:00:17,272 INFO L276 IsEmpty]: Start isEmpty. Operand 1421 states and 4172 transitions. [2021-05-21 20:00:17,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 20:00:17,273 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:00:17,273 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:00:17,273 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable150 [2021-05-21 20:00:17,273 INFO L430 AbstractCegarLoop]: === Iteration 152 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 20:00:17,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:00:17,274 INFO L82 PathProgramCache]: Analyzing trace with hash 1908930364, now seen corresponding path program 150 times [2021-05-21 20:00:17,274 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:00:17,274 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1535099723] [2021-05-21 20:00:17,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:00:17,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:00:17,334 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:00:17,334 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:00:17,334 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1535099723] [2021-05-21 20:00:17,334 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1535099723] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:00:17,334 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:00:17,334 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-21 20:00:17,334 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1893470761] [2021-05-21 20:00:17,334 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:00:17,334 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:00:17,335 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:00:17,335 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:00:17,335 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) [2021-05-21 20:00:17,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:00:17,496 INFO L93 Difference]: Finished difference Result 1587 states and 4608 transitions. [2021-05-21 20:00:17,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:00:17,497 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-05-21 20:00:17,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:00:17,498 INFO L225 Difference]: With dead ends: 1587 [2021-05-21 20:00:17,498 INFO L226 Difference]: Without dead ends: 1483 [2021-05-21 20:00:17,498 INFO L777 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 [2021-05-21 20:00:17,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1483 states. [2021-05-21 20:00:17,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1483 to 1422. [2021-05-21 20:00:17,511 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) [2021-05-21 20:00:17,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1422 states to 1422 states and 4173 transitions. [2021-05-21 20:00:17,513 INFO L78 Accepts]: Start accepts. Automaton has 1422 states and 4173 transitions. Word has length 26 [2021-05-21 20:00:17,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:00:17,513 INFO L482 AbstractCegarLoop]: Abstraction has 1422 states and 4173 transitions. [2021-05-21 20:00:17,513 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:00:17,513 INFO L276 IsEmpty]: Start isEmpty. Operand 1422 states and 4173 transitions. [2021-05-21 20:00:17,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 20:00:17,514 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:00:17,514 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:00:17,514 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable151 [2021-05-21 20:00:17,514 INFO L430 AbstractCegarLoop]: === Iteration 153 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 20:00:17,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:00:17,514 INFO L82 PathProgramCache]: Analyzing trace with hash 440219134, now seen corresponding path program 151 times [2021-05-21 20:00:17,514 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:00:17,514 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1196712134] [2021-05-21 20:00:17,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:00:17,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:00:17,573 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:00:17,573 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:00:17,573 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1196712134] [2021-05-21 20:00:17,573 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1196712134] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:00:17,573 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:00:17,573 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-21 20:00:17,574 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [454747863] [2021-05-21 20:00:17,574 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:00:17,574 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:00:17,574 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:00:17,574 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:00:17,574 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) [2021-05-21 20:00:17,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:00:17,739 INFO L93 Difference]: Finished difference Result 1574 states and 4561 transitions. [2021-05-21 20:00:17,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:00:17,740 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-05-21 20:00:17,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:00:17,741 INFO L225 Difference]: With dead ends: 1574 [2021-05-21 20:00:17,741 INFO L226 Difference]: Without dead ends: 1495 [2021-05-21 20:00:17,741 INFO L777 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 [2021-05-21 20:00:17,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1495 states. [2021-05-21 20:00:17,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1495 to 1423. [2021-05-21 20:00:17,754 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) [2021-05-21 20:00:17,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1423 states to 1423 states and 4177 transitions. [2021-05-21 20:00:17,756 INFO L78 Accepts]: Start accepts. Automaton has 1423 states and 4177 transitions. Word has length 26 [2021-05-21 20:00:17,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:00:17,756 INFO L482 AbstractCegarLoop]: Abstraction has 1423 states and 4177 transitions. [2021-05-21 20:00:17,756 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) [2021-05-21 20:00:17,756 INFO L276 IsEmpty]: Start isEmpty. Operand 1423 states and 4177 transitions. [2021-05-21 20:00:17,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 20:00:17,757 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:00:17,757 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:00:17,757 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable152 [2021-05-21 20:00:17,757 INFO L430 AbstractCegarLoop]: === Iteration 154 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 20:00:17,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:00:17,757 INFO L82 PathProgramCache]: Analyzing trace with hash -133178142, now seen corresponding path program 152 times [2021-05-21 20:00:17,758 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:00:17,758 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1252116247] [2021-05-21 20:00:17,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:00:17,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:00:17,823 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:00:17,824 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:00:17,824 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1252116247] [2021-05-21 20:00:17,824 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1252116247] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:00:17,824 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:00:17,824 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-21 20:00:17,824 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2117600903] [2021-05-21 20:00:17,824 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:00:17,824 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:00:17,824 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:00:17,824 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:00:17,824 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) [2021-05-21 20:00:17,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:00:17,996 INFO L93 Difference]: Finished difference Result 1563 states and 4535 transitions. [2021-05-21 20:00:17,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:00:17,996 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-05-21 20:00:17,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:00:17,998 INFO L225 Difference]: With dead ends: 1563 [2021-05-21 20:00:17,998 INFO L226 Difference]: Without dead ends: 1480 [2021-05-21 20:00:17,998 INFO L777 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 [2021-05-21 20:00:18,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1480 states. [2021-05-21 20:00:18,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1480 to 1424. [2021-05-21 20:00:18,011 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) [2021-05-21 20:00:18,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1424 states to 1424 states and 4179 transitions. [2021-05-21 20:00:18,012 INFO L78 Accepts]: Start accepts. Automaton has 1424 states and 4179 transitions. Word has length 26 [2021-05-21 20:00:18,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:00:18,013 INFO L482 AbstractCegarLoop]: Abstraction has 1424 states and 4179 transitions. [2021-05-21 20:00:18,013 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:00:18,013 INFO L276 IsEmpty]: Start isEmpty. Operand 1424 states and 4179 transitions. [2021-05-21 20:00:18,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 20:00:18,014 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:00:18,014 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:00:18,014 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable153 [2021-05-21 20:00:18,014 INFO L430 AbstractCegarLoop]: === Iteration 155 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 20:00:18,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:00:18,014 INFO L82 PathProgramCache]: Analyzing trace with hash 453372706, now seen corresponding path program 153 times [2021-05-21 20:00:18,014 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:00:18,014 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [241342310] [2021-05-21 20:00:18,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:00:18,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:00:18,071 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:00:18,071 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:00:18,071 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [241342310] [2021-05-21 20:00:18,071 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [241342310] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:00:18,071 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:00:18,072 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-21 20:00:18,072 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1932484466] [2021-05-21 20:00:18,072 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:00:18,072 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:00:18,072 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:00:18,072 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:00:18,072 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) [2021-05-21 20:00:18,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:00:18,229 INFO L93 Difference]: Finished difference Result 1627 states and 4733 transitions. [2021-05-21 20:00:18,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:00:18,229 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-05-21 20:00:18,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:00:18,231 INFO L225 Difference]: With dead ends: 1627 [2021-05-21 20:00:18,231 INFO L226 Difference]: Without dead ends: 1530 [2021-05-21 20:00:18,231 INFO L777 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 [2021-05-21 20:00:18,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1530 states. [2021-05-21 20:00:18,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1530 to 1431. [2021-05-21 20:00:18,243 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) [2021-05-21 20:00:18,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1431 states to 1431 states and 4203 transitions. [2021-05-21 20:00:18,245 INFO L78 Accepts]: Start accepts. Automaton has 1431 states and 4203 transitions. Word has length 26 [2021-05-21 20:00:18,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:00:18,245 INFO L482 AbstractCegarLoop]: Abstraction has 1431 states and 4203 transitions. [2021-05-21 20:00:18,245 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:00:18,245 INFO L276 IsEmpty]: Start isEmpty. Operand 1431 states and 4203 transitions. [2021-05-21 20:00:18,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 20:00:18,247 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:00:18,247 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:00:18,247 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable154 [2021-05-21 20:00:18,247 INFO L430 AbstractCegarLoop]: === Iteration 156 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 20:00:18,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:00:18,247 INFO L82 PathProgramCache]: Analyzing trace with hash -258695136, now seen corresponding path program 154 times [2021-05-21 20:00:18,247 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:00:18,247 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [679234326] [2021-05-21 20:00:18,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:00:18,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:00:18,316 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:00:18,317 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:00:18,317 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [679234326] [2021-05-21 20:00:18,317 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [679234326] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:00:18,317 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:00:18,317 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-21 20:00:18,317 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [530573054] [2021-05-21 20:00:18,317 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:00:18,317 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:00:18,317 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:00:18,317 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:00:18,317 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) [2021-05-21 20:00:18,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:00:18,488 INFO L93 Difference]: Finished difference Result 1607 states and 4663 transitions. [2021-05-21 20:00:18,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:00:18,488 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-05-21 20:00:18,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:00:18,490 INFO L225 Difference]: With dead ends: 1607 [2021-05-21 20:00:18,490 INFO L226 Difference]: Without dead ends: 1519 [2021-05-21 20:00:18,490 INFO L777 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 [2021-05-21 20:00:18,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1519 states. [2021-05-21 20:00:18,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1519 to 1430. [2021-05-21 20:00:18,503 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) [2021-05-21 20:00:18,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1430 states to 1430 states and 4203 transitions. [2021-05-21 20:00:18,505 INFO L78 Accepts]: Start accepts. Automaton has 1430 states and 4203 transitions. Word has length 26 [2021-05-21 20:00:18,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:00:18,505 INFO L482 AbstractCegarLoop]: Abstraction has 1430 states and 4203 transitions. [2021-05-21 20:00:18,505 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) [2021-05-21 20:00:18,505 INFO L276 IsEmpty]: Start isEmpty. Operand 1430 states and 4203 transitions. [2021-05-21 20:00:18,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 20:00:18,506 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:00:18,506 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:00:18,506 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable155 [2021-05-21 20:00:18,506 INFO L430 AbstractCegarLoop]: === Iteration 157 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 20:00:18,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:00:18,506 INFO L82 PathProgramCache]: Analyzing trace with hash 1952637280, now seen corresponding path program 155 times [2021-05-21 20:00:18,507 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:00:18,507 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1345518631] [2021-05-21 20:00:18,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:00:18,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:00:18,571 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:00:18,571 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:00:18,571 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1345518631] [2021-05-21 20:00:18,571 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1345518631] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:00:18,571 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:00:18,572 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-21 20:00:18,572 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610013710] [2021-05-21 20:00:18,572 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:00:18,572 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:00:18,572 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:00:18,572 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:00:18,572 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) [2021-05-21 20:00:18,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:00:18,748 INFO L93 Difference]: Finished difference Result 1567 states and 4558 transitions. [2021-05-21 20:00:18,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:00:18,749 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 [2021-05-21 20:00:18,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:00:18,750 INFO L225 Difference]: With dead ends: 1567 [2021-05-21 20:00:18,750 INFO L226 Difference]: Without dead ends: 1488 [2021-05-21 20:00:18,750 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 56.6ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:00:18,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1488 states. [2021-05-21 20:00:18,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1488 to 1429. [2021-05-21 20:00:18,763 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) [2021-05-21 20:00:18,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1429 states to 1429 states and 4199 transitions. [2021-05-21 20:00:18,765 INFO L78 Accepts]: Start accepts. Automaton has 1429 states and 4199 transitions. Word has length 26 [2021-05-21 20:00:18,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:00:18,765 INFO L482 AbstractCegarLoop]: Abstraction has 1429 states and 4199 transitions. [2021-05-21 20:00:18,765 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:00:18,765 INFO L276 IsEmpty]: Start isEmpty. Operand 1429 states and 4199 transitions. [2021-05-21 20:00:18,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 20:00:18,766 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:00:18,766 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:00:18,766 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable156 [2021-05-21 20:00:18,766 INFO L430 AbstractCegarLoop]: === Iteration 158 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 20:00:18,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:00:18,767 INFO L82 PathProgramCache]: Analyzing trace with hash 1379240004, now seen corresponding path program 156 times [2021-05-21 20:00:18,767 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:00:18,767 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1182321127] [2021-05-21 20:00:18,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:00:18,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:00:18,830 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:00:18,830 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:00:18,830 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1182321127] [2021-05-21 20:00:18,830 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1182321127] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:00:18,830 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:00:18,831 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-21 20:00:18,831 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [39157077] [2021-05-21 20:00:18,831 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:00:18,831 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:00:18,831 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:00:18,831 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:00:18,831 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) [2021-05-21 20:00:18,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:00:18,995 INFO L93 Difference]: Finished difference Result 1572 states and 4563 transitions. [2021-05-21 20:00:18,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:00:18,995 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 [2021-05-21 20:00:18,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:00:18,997 INFO L225 Difference]: With dead ends: 1572 [2021-05-21 20:00:18,997 INFO L226 Difference]: Without dead ends: 1489 [2021-05-21 20:00:18,997 INFO L777 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 [2021-05-21 20:00:19,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1489 states. [2021-05-21 20:00:19,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1489 to 1430. [2021-05-21 20:00:19,009 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) [2021-05-21 20:00:19,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1430 states to 1430 states and 4200 transitions. [2021-05-21 20:00:19,011 INFO L78 Accepts]: Start accepts. Automaton has 1430 states and 4200 transitions. Word has length 26 [2021-05-21 20:00:19,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:00:19,011 INFO L482 AbstractCegarLoop]: Abstraction has 1430 states and 4200 transitions. [2021-05-21 20:00:19,011 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) [2021-05-21 20:00:19,011 INFO L276 IsEmpty]: Start isEmpty. Operand 1430 states and 4200 transitions. [2021-05-21 20:00:19,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 20:00:19,012 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:00:19,012 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:00:19,012 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable157 [2021-05-21 20:00:19,012 INFO L430 AbstractCegarLoop]: === Iteration 159 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 20:00:19,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:00:19,013 INFO L82 PathProgramCache]: Analyzing trace with hash 560492734, now seen corresponding path program 157 times [2021-05-21 20:00:19,013 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:00:19,013 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [544503475] [2021-05-21 20:00:19,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:00:19,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:00:19,073 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:00:19,073 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:00:19,073 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [544503475] [2021-05-21 20:00:19,073 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [544503475] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:00:19,073 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:00:19,074 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-21 20:00:19,074 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [238746595] [2021-05-21 20:00:19,074 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:00:19,074 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:00:19,074 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:00:19,074 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:00:19,074 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) [2021-05-21 20:00:19,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:00:19,239 INFO L93 Difference]: Finished difference Result 1645 states and 4769 transitions. [2021-05-21 20:00:19,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:00:19,240 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-05-21 20:00:19,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:00:19,242 INFO L225 Difference]: With dead ends: 1645 [2021-05-21 20:00:19,242 INFO L226 Difference]: Without dead ends: 1554 [2021-05-21 20:00:19,242 INFO L777 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 [2021-05-21 20:00:19,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1554 states. [2021-05-21 20:00:19,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1554 to 1426. [2021-05-21 20:00:19,255 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) [2021-05-21 20:00:19,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1426 states to 1426 states and 4186 transitions. [2021-05-21 20:00:19,257 INFO L78 Accepts]: Start accepts. Automaton has 1426 states and 4186 transitions. Word has length 26 [2021-05-21 20:00:19,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:00:19,257 INFO L482 AbstractCegarLoop]: Abstraction has 1426 states and 4186 transitions. [2021-05-21 20:00:19,257 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:00:19,257 INFO L276 IsEmpty]: Start isEmpty. Operand 1426 states and 4186 transitions. [2021-05-21 20:00:19,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 20:00:19,258 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:00:19,258 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:00:19,258 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable158 [2021-05-21 20:00:19,258 INFO L430 AbstractCegarLoop]: === Iteration 160 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 20:00:19,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:00:19,258 INFO L82 PathProgramCache]: Analyzing trace with hash 130172868, now seen corresponding path program 158 times [2021-05-21 20:00:19,259 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:00:19,259 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [984545570] [2021-05-21 20:00:19,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:00:19,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:00:19,321 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:00:19,321 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:00:19,321 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [984545570] [2021-05-21 20:00:19,321 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [984545570] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:00:19,321 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:00:19,321 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-21 20:00:19,321 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1036788236] [2021-05-21 20:00:19,321 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:00:19,321 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:00:19,321 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:00:19,321 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:00:19,322 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) [2021-05-21 20:00:19,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:00:19,485 INFO L93 Difference]: Finished difference Result 1595 states and 4605 transitions. [2021-05-21 20:00:19,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:00:19,485 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-05-21 20:00:19,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:00:19,487 INFO L225 Difference]: With dead ends: 1595 [2021-05-21 20:00:19,487 INFO L226 Difference]: Without dead ends: 1496 [2021-05-21 20:00:19,487 INFO L777 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 [2021-05-21 20:00:19,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1496 states. [2021-05-21 20:00:19,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1496 to 1431. [2021-05-21 20:00:19,499 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) [2021-05-21 20:00:19,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1431 states to 1431 states and 4196 transitions. [2021-05-21 20:00:19,505 INFO L78 Accepts]: Start accepts. Automaton has 1431 states and 4196 transitions. Word has length 26 [2021-05-21 20:00:19,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:00:19,505 INFO L482 AbstractCegarLoop]: Abstraction has 1431 states and 4196 transitions. [2021-05-21 20:00:19,505 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) [2021-05-21 20:00:19,505 INFO L276 IsEmpty]: Start isEmpty. Operand 1431 states and 4196 transitions. [2021-05-21 20:00:19,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 20:00:19,506 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:00:19,506 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:00:19,506 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable159 [2021-05-21 20:00:19,506 INFO L430 AbstractCegarLoop]: === Iteration 161 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 20:00:19,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:00:19,507 INFO L82 PathProgramCache]: Analyzing trace with hash -609950332, now seen corresponding path program 159 times [2021-05-21 20:00:19,507 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:00:19,507 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1574293554] [2021-05-21 20:00:19,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:00:19,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:00:19,562 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:00:19,562 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:00:19,563 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1574293554] [2021-05-21 20:00:19,563 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1574293554] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:00:19,563 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:00:19,563 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-21 20:00:19,563 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [576909123] [2021-05-21 20:00:19,563 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:00:19,563 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:00:19,563 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:00:19,563 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:00:19,563 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) [2021-05-21 20:00:19,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:00:19,716 INFO L93 Difference]: Finished difference Result 1626 states and 4726 transitions. [2021-05-21 20:00:19,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:00:19,716 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-05-21 20:00:19,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:00:19,718 INFO L225 Difference]: With dead ends: 1626 [2021-05-21 20:00:19,718 INFO L226 Difference]: Without dead ends: 1529 [2021-05-21 20:00:19,718 INFO L777 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 [2021-05-21 20:00:19,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1529 states. [2021-05-21 20:00:19,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1529 to 1429. [2021-05-21 20:00:19,730 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) [2021-05-21 20:00:19,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1429 states to 1429 states and 4188 transitions. [2021-05-21 20:00:19,732 INFO L78 Accepts]: Start accepts. Automaton has 1429 states and 4188 transitions. Word has length 26 [2021-05-21 20:00:19,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:00:19,732 INFO L482 AbstractCegarLoop]: Abstraction has 1429 states and 4188 transitions. [2021-05-21 20:00:19,732 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:00:19,732 INFO L276 IsEmpty]: Start isEmpty. Operand 1429 states and 4188 transitions. [2021-05-21 20:00:19,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 20:00:19,733 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:00:19,733 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:00:19,734 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable160 [2021-05-21 20:00:19,734 INFO L430 AbstractCegarLoop]: === Iteration 162 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 20:00:19,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:00:19,734 INFO L82 PathProgramCache]: Analyzing trace with hash -1322018174, now seen corresponding path program 160 times [2021-05-21 20:00:19,734 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:00:19,734 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2079796939] [2021-05-21 20:00:19,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:00:19,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:00:19,789 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:00:19,789 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:00:19,789 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2079796939] [2021-05-21 20:00:19,789 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2079796939] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:00:19,789 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:00:19,789 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-21 20:00:19,789 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1047396573] [2021-05-21 20:00:19,789 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:00:19,789 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:00:19,790 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:00:19,790 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:00:19,790 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) [2021-05-21 20:00:19,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:00:19,947 INFO L93 Difference]: Finished difference Result 1603 states and 4654 transitions. [2021-05-21 20:00:19,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:00:19,947 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-05-21 20:00:19,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:00:19,948 INFO L225 Difference]: With dead ends: 1603 [2021-05-21 20:00:19,949 INFO L226 Difference]: Without dead ends: 1517 [2021-05-21 20:00:19,949 INFO L777 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 [2021-05-21 20:00:19,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1517 states. [2021-05-21 20:00:19,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1517 to 1437. [2021-05-21 20:00:19,968 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) [2021-05-21 20:00:19,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1437 states to 1437 states and 4211 transitions. [2021-05-21 20:00:19,970 INFO L78 Accepts]: Start accepts. Automaton has 1437 states and 4211 transitions. Word has length 26 [2021-05-21 20:00:19,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:00:19,970 INFO L482 AbstractCegarLoop]: Abstraction has 1437 states and 4211 transitions. [2021-05-21 20:00:19,970 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:00:19,970 INFO L276 IsEmpty]: Start isEmpty. Operand 1437 states and 4211 transitions. [2021-05-21 20:00:19,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 20:00:19,972 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:00:19,972 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:00:19,972 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable161 [2021-05-21 20:00:19,972 INFO L430 AbstractCegarLoop]: === Iteration 163 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 20:00:19,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:00:19,972 INFO L82 PathProgramCache]: Analyzing trace with hash -1411777824, now seen corresponding path program 161 times [2021-05-21 20:00:19,972 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:00:19,972 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [439212797] [2021-05-21 20:00:19,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:00:19,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:00:20,025 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:00:20,026 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:00:20,026 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [439212797] [2021-05-21 20:00:20,026 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [439212797] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:00:20,026 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:00:20,026 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-21 20:00:20,026 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1921984015] [2021-05-21 20:00:20,026 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:00:20,026 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:00:20,026 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:00:20,026 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:00:20,026 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) [2021-05-21 20:00:20,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:00:20,187 INFO L93 Difference]: Finished difference Result 1577 states and 4563 transitions. [2021-05-21 20:00:20,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:00:20,188 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-05-21 20:00:20,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:00:20,189 INFO L225 Difference]: With dead ends: 1577 [2021-05-21 20:00:20,189 INFO L226 Difference]: Without dead ends: 1482 [2021-05-21 20:00:20,189 INFO L777 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 [2021-05-21 20:00:20,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1482 states. [2021-05-21 20:00:20,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1482 to 1420. [2021-05-21 20:00:20,201 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) [2021-05-21 20:00:20,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1420 states to 1420 states and 4166 transitions. [2021-05-21 20:00:20,203 INFO L78 Accepts]: Start accepts. Automaton has 1420 states and 4166 transitions. Word has length 26 [2021-05-21 20:00:20,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:00:20,203 INFO L482 AbstractCegarLoop]: Abstraction has 1420 states and 4166 transitions. [2021-05-21 20:00:20,203 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:00:20,203 INFO L276 IsEmpty]: Start isEmpty. Operand 1420 states and 4166 transitions. [2021-05-21 20:00:20,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 20:00:20,205 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:00:20,205 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:00:20,205 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable162 [2021-05-21 20:00:20,205 INFO L430 AbstractCegarLoop]: === Iteration 164 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 20:00:20,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:00:20,205 INFO L82 PathProgramCache]: Analyzing trace with hash -1692751788, now seen corresponding path program 162 times [2021-05-21 20:00:20,205 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:00:20,205 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1005990279] [2021-05-21 20:00:20,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:00:20,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:00:20,250 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:00:20,250 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:00:20,250 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1005990279] [2021-05-21 20:00:20,250 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1005990279] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:00:20,250 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:00:20,250 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:00:20,250 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [68545999] [2021-05-21 20:00:20,250 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-21 20:00:20,250 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:00:20,250 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-21 20:00:20,250 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-05-21 20:00:20,251 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) [2021-05-21 20:00:20,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:00:20,374 INFO L93 Difference]: Finished difference Result 1724 states and 5023 transitions. [2021-05-21 20:00:20,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-21 20:00:20,374 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 [2021-05-21 20:00:20,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:00:20,376 INFO L225 Difference]: With dead ends: 1724 [2021-05-21 20:00:20,376 INFO L226 Difference]: Without dead ends: 1639 [2021-05-21 20:00:20,376 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 37.8ms TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-05-21 20:00:20,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1639 states. [2021-05-21 20:00:20,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1639 to 1456. [2021-05-21 20:00:20,389 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) [2021-05-21 20:00:20,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1456 states to 1456 states and 4275 transitions. [2021-05-21 20:00:20,391 INFO L78 Accepts]: Start accepts. Automaton has 1456 states and 4275 transitions. Word has length 26 [2021-05-21 20:00:20,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:00:20,391 INFO L482 AbstractCegarLoop]: Abstraction has 1456 states and 4275 transitions. [2021-05-21 20:00:20,391 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) [2021-05-21 20:00:20,391 INFO L276 IsEmpty]: Start isEmpty. Operand 1456 states and 4275 transitions. [2021-05-21 20:00:20,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 20:00:20,393 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:00:20,393 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:00:20,393 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable163 [2021-05-21 20:00:20,393 INFO L430 AbstractCegarLoop]: === Iteration 165 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 20:00:20,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:00:20,393 INFO L82 PathProgramCache]: Analyzing trace with hash 2028818232, now seen corresponding path program 163 times [2021-05-21 20:00:20,393 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:00:20,393 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1538935922] [2021-05-21 20:00:20,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:00:20,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:00:20,449 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:00:20,449 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:00:20,449 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1538935922] [2021-05-21 20:00:20,449 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1538935922] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:00:20,449 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:00:20,449 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-21 20:00:20,449 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [844202731] [2021-05-21 20:00:20,449 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:00:20,449 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:00:20,449 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:00:20,449 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:00:20,450 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) [2021-05-21 20:00:20,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:00:20,604 INFO L93 Difference]: Finished difference Result 1767 states and 5149 transitions. [2021-05-21 20:00:20,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:00:20,605 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-05-21 20:00:20,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:00:20,606 INFO L225 Difference]: With dead ends: 1767 [2021-05-21 20:00:20,606 INFO L226 Difference]: Without dead ends: 1619 [2021-05-21 20:00:20,607 INFO L777 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 [2021-05-21 20:00:20,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1619 states. [2021-05-21 20:00:20,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1619 to 1417. [2021-05-21 20:00:20,619 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) [2021-05-21 20:00:20,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1417 states to 1417 states and 4162 transitions. [2021-05-21 20:00:20,621 INFO L78 Accepts]: Start accepts. Automaton has 1417 states and 4162 transitions. Word has length 26 [2021-05-21 20:00:20,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:00:20,621 INFO L482 AbstractCegarLoop]: Abstraction has 1417 states and 4162 transitions. [2021-05-21 20:00:20,621 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:00:20,621 INFO L276 IsEmpty]: Start isEmpty. Operand 1417 states and 4162 transitions. [2021-05-21 20:00:20,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 20:00:20,622 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:00:20,622 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:00:20,622 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable164 [2021-05-21 20:00:20,622 INFO L430 AbstractCegarLoop]: === Iteration 166 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 20:00:20,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:00:20,623 INFO L82 PathProgramCache]: Analyzing trace with hash 891859190, now seen corresponding path program 164 times [2021-05-21 20:00:20,623 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:00:20,623 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2078924016] [2021-05-21 20:00:20,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:00:20,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:00:20,679 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:00:20,679 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:00:20,679 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2078924016] [2021-05-21 20:00:20,679 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2078924016] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:00:20,679 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:00:20,679 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-21 20:00:20,679 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1272289343] [2021-05-21 20:00:20,679 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:00:20,679 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:00:20,680 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:00:20,680 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:00:20,680 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) [2021-05-21 20:00:20,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:00:20,839 INFO L93 Difference]: Finished difference Result 1698 states and 4940 transitions. [2021-05-21 20:00:20,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:00:20,840 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 [2021-05-21 20:00:20,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:00:20,841 INFO L225 Difference]: With dead ends: 1698 [2021-05-21 20:00:20,842 INFO L226 Difference]: Without dead ends: 1613 [2021-05-21 20:00:20,842 INFO L777 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 [2021-05-21 20:00:20,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1613 states. [2021-05-21 20:00:20,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1613 to 1419. [2021-05-21 20:00:20,854 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) [2021-05-21 20:00:20,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1419 states to 1419 states and 4167 transitions. [2021-05-21 20:00:20,856 INFO L78 Accepts]: Start accepts. Automaton has 1419 states and 4167 transitions. Word has length 26 [2021-05-21 20:00:20,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:00:20,856 INFO L482 AbstractCegarLoop]: Abstraction has 1419 states and 4167 transitions. [2021-05-21 20:00:20,856 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:00:20,856 INFO L276 IsEmpty]: Start isEmpty. Operand 1419 states and 4167 transitions. [2021-05-21 20:00:20,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 20:00:20,858 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:00:20,858 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:00:20,858 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable165 [2021-05-21 20:00:20,858 INFO L430 AbstractCegarLoop]: === Iteration 167 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 20:00:20,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:00:20,858 INFO L82 PathProgramCache]: Analyzing trace with hash 318461914, now seen corresponding path program 165 times [2021-05-21 20:00:20,858 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:00:20,858 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1866145981] [2021-05-21 20:00:20,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:00:20,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:00:20,916 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:00:20,917 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:00:20,917 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1866145981] [2021-05-21 20:00:20,917 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1866145981] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:00:20,917 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:00:20,917 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-21 20:00:20,917 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1121922323] [2021-05-21 20:00:20,917 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:00:20,917 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:00:20,917 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:00:20,917 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:00:20,917 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) [2021-05-21 20:00:21,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:00:21,079 INFO L93 Difference]: Finished difference Result 1732 states and 5057 transitions. [2021-05-21 20:00:21,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:00:21,079 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-05-21 20:00:21,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:00:21,081 INFO L225 Difference]: With dead ends: 1732 [2021-05-21 20:00:21,081 INFO L226 Difference]: Without dead ends: 1649 [2021-05-21 20:00:21,081 INFO L777 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 [2021-05-21 20:00:21,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1649 states. [2021-05-21 20:00:21,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1649 to 1438. [2021-05-21 20:00:21,094 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) [2021-05-21 20:00:21,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1438 states to 1438 states and 4228 transitions. [2021-05-21 20:00:21,096 INFO L78 Accepts]: Start accepts. Automaton has 1438 states and 4228 transitions. Word has length 26 [2021-05-21 20:00:21,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:00:21,096 INFO L482 AbstractCegarLoop]: Abstraction has 1438 states and 4228 transitions. [2021-05-21 20:00:21,096 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:00:21,096 INFO L276 IsEmpty]: Start isEmpty. Operand 1438 states and 4228 transitions. [2021-05-21 20:00:21,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 20:00:21,097 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:00:21,097 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:00:21,097 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable166 [2021-05-21 20:00:21,097 INFO L430 AbstractCegarLoop]: === Iteration 168 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 20:00:21,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:00:21,098 INFO L82 PathProgramCache]: Analyzing trace with hash -930605222, now seen corresponding path program 166 times [2021-05-21 20:00:21,098 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:00:21,098 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1890670893] [2021-05-21 20:00:21,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:00:21,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:00:21,154 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:00:21,154 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:00:21,155 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1890670893] [2021-05-21 20:00:21,155 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1890670893] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:00:21,155 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:00:21,155 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-21 20:00:21,155 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1506015990] [2021-05-21 20:00:21,155 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:00:21,155 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:00:21,155 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:00:21,155 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:00:21,155 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) [2021-05-21 20:00:21,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:00:21,316 INFO L93 Difference]: Finished difference Result 1748 states and 5073 transitions. [2021-05-21 20:00:21,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:00:21,316 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 [2021-05-21 20:00:21,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:00:21,318 INFO L225 Difference]: With dead ends: 1748 [2021-05-21 20:00:21,318 INFO L226 Difference]: Without dead ends: 1639 [2021-05-21 20:00:21,318 INFO L777 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 [2021-05-21 20:00:21,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1639 states. [2021-05-21 20:00:21,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1639 to 1406. [2021-05-21 20:00:21,337 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) [2021-05-21 20:00:21,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1406 states to 1406 states and 4130 transitions. [2021-05-21 20:00:21,338 INFO L78 Accepts]: Start accepts. Automaton has 1406 states and 4130 transitions. Word has length 26 [2021-05-21 20:00:21,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:00:21,338 INFO L482 AbstractCegarLoop]: Abstraction has 1406 states and 4130 transitions. [2021-05-21 20:00:21,339 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:00:21,339 INFO L276 IsEmpty]: Start isEmpty. Operand 1406 states and 4130 transitions. [2021-05-21 20:00:21,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 20:00:21,340 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:00:21,340 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:00:21,340 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable167 [2021-05-21 20:00:21,340 INFO L430 AbstractCegarLoop]: === Iteration 169 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 20:00:21,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:00:21,340 INFO L82 PathProgramCache]: Analyzing trace with hash -781109324, now seen corresponding path program 167 times [2021-05-21 20:00:21,340 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:00:21,340 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2122599503] [2021-05-21 20:00:21,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:00:21,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:00:21,392 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:00:21,392 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:00:21,392 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2122599503] [2021-05-21 20:00:21,392 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2122599503] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:00:21,392 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:00:21,392 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-05-21 20:00:21,392 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2025681028] [2021-05-21 20:00:21,392 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:00:21,392 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:00:21,393 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:00:21,393 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:00:21,393 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) [2021-05-21 20:00:21,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:00:21,490 INFO L93 Difference]: Finished difference Result 1712 states and 4985 transitions. [2021-05-21 20:00:21,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:00:21,491 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 [2021-05-21 20:00:21,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:00:21,492 INFO L225 Difference]: With dead ends: 1712 [2021-05-21 20:00:21,492 INFO L226 Difference]: Without dead ends: 1615 [2021-05-21 20:00:21,492 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 32.0ms TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:00:21,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1615 states. [2021-05-21 20:00:21,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1615 to 1488. [2021-05-21 20:00:21,505 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) [2021-05-21 20:00:21,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1488 states to 1488 states and 4366 transitions. [2021-05-21 20:00:21,507 INFO L78 Accepts]: Start accepts. Automaton has 1488 states and 4366 transitions. Word has length 26 [2021-05-21 20:00:21,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:00:21,507 INFO L482 AbstractCegarLoop]: Abstraction has 1488 states and 4366 transitions. [2021-05-21 20:00:21,507 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) [2021-05-21 20:00:21,507 INFO L276 IsEmpty]: Start isEmpty. Operand 1488 states and 4366 transitions. [2021-05-21 20:00:21,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 20:00:21,509 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:00:21,509 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:00:21,509 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable168 [2021-05-21 20:00:21,509 INFO L430 AbstractCegarLoop]: === Iteration 170 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 20:00:21,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:00:21,509 INFO L82 PathProgramCache]: Analyzing trace with hash 88335284, now seen corresponding path program 168 times [2021-05-21 20:00:21,509 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:00:21,509 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [698775190] [2021-05-21 20:00:21,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:00:21,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:00:21,557 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:00:21,557 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:00:21,557 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [698775190] [2021-05-21 20:00:21,557 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [698775190] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:00:21,557 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:00:21,558 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:00:21,558 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [75956791] [2021-05-21 20:00:21,558 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-21 20:00:21,558 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:00:21,558 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-21 20:00:21,558 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-05-21 20:00:21,558 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) [2021-05-21 20:00:21,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:00:21,682 INFO L93 Difference]: Finished difference Result 1769 states and 5133 transitions. [2021-05-21 20:00:21,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-21 20:00:21,682 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 [2021-05-21 20:00:21,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:00:21,684 INFO L225 Difference]: With dead ends: 1769 [2021-05-21 20:00:21,684 INFO L226 Difference]: Without dead ends: 1570 [2021-05-21 20:00:21,684 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 37.7ms TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-05-21 20:00:21,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1570 states. [2021-05-21 20:00:21,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1570 to 1462. [2021-05-21 20:00:21,697 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) [2021-05-21 20:00:21,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1462 states to 1462 states and 4276 transitions. [2021-05-21 20:00:21,699 INFO L78 Accepts]: Start accepts. Automaton has 1462 states and 4276 transitions. Word has length 26 [2021-05-21 20:00:21,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:00:21,699 INFO L482 AbstractCegarLoop]: Abstraction has 1462 states and 4276 transitions. [2021-05-21 20:00:21,699 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) [2021-05-21 20:00:21,699 INFO L276 IsEmpty]: Start isEmpty. Operand 1462 states and 4276 transitions. [2021-05-21 20:00:21,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 20:00:21,700 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:00:21,700 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:00:21,700 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable169 [2021-05-21 20:00:21,700 INFO L430 AbstractCegarLoop]: === Iteration 171 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 20:00:21,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:00:21,700 INFO L82 PathProgramCache]: Analyzing trace with hash 1796117202, now seen corresponding path program 169 times [2021-05-21 20:00:21,701 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:00:21,701 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1429448365] [2021-05-21 20:00:21,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:00:21,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:00:21,750 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:00:21,750 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:00:21,751 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1429448365] [2021-05-21 20:00:21,751 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1429448365] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:00:21,751 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:00:21,751 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:00:21,751 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1439531898] [2021-05-21 20:00:21,751 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-21 20:00:21,751 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:00:21,751 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-21 20:00:21,751 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-05-21 20:00:21,751 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) [2021-05-21 20:00:21,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:00:21,876 INFO L93 Difference]: Finished difference Result 1668 states and 4808 transitions. [2021-05-21 20:00:21,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-21 20:00:21,877 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 [2021-05-21 20:00:21,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:00:21,878 INFO L225 Difference]: With dead ends: 1668 [2021-05-21 20:00:21,878 INFO L226 Difference]: Without dead ends: 1571 [2021-05-21 20:00:21,879 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 42.7ms TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-05-21 20:00:21,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1571 states. [2021-05-21 20:00:21,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1571 to 1452. [2021-05-21 20:00:21,891 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) [2021-05-21 20:00:21,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1452 states to 1452 states and 4251 transitions. [2021-05-21 20:00:21,893 INFO L78 Accepts]: Start accepts. Automaton has 1452 states and 4251 transitions. Word has length 26 [2021-05-21 20:00:21,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:00:21,893 INFO L482 AbstractCegarLoop]: Abstraction has 1452 states and 4251 transitions. [2021-05-21 20:00:21,893 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) [2021-05-21 20:00:21,893 INFO L276 IsEmpty]: Start isEmpty. Operand 1452 states and 4251 transitions. [2021-05-21 20:00:21,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 20:00:21,894 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:00:21,894 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:00:21,894 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable170 [2021-05-21 20:00:21,894 INFO L430 AbstractCegarLoop]: === Iteration 172 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 20:00:21,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:00:21,894 INFO L82 PathProgramCache]: Analyzing trace with hash -1629405486, now seen corresponding path program 170 times [2021-05-21 20:00:21,895 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:00:21,895 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [877425317] [2021-05-21 20:00:21,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:00:21,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:00:21,953 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:00:21,953 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:00:21,953 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [877425317] [2021-05-21 20:00:21,953 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [877425317] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:00:21,953 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:00:21,953 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-21 20:00:21,953 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1270630650] [2021-05-21 20:00:21,953 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:00:21,953 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:00:21,953 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:00:21,954 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:00:21,954 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) [2021-05-21 20:00:22,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:00:22,103 INFO L93 Difference]: Finished difference Result 1677 states and 4834 transitions. [2021-05-21 20:00:22,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:00:22,104 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-05-21 20:00:22,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:00:22,105 INFO L225 Difference]: With dead ends: 1677 [2021-05-21 20:00:22,105 INFO L226 Difference]: Without dead ends: 1550 [2021-05-21 20:00:22,106 INFO L777 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 [2021-05-21 20:00:22,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1550 states. [2021-05-21 20:00:22,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1550 to 1470. [2021-05-21 20:00:22,119 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) [2021-05-21 20:00:22,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1470 states to 1470 states and 4287 transitions. [2021-05-21 20:00:22,120 INFO L78 Accepts]: Start accepts. Automaton has 1470 states and 4287 transitions. Word has length 26 [2021-05-21 20:00:22,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:00:22,121 INFO L482 AbstractCegarLoop]: Abstraction has 1470 states and 4287 transitions. [2021-05-21 20:00:22,121 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:00:22,121 INFO L276 IsEmpty]: Start isEmpty. Operand 1470 states and 4287 transitions. [2021-05-21 20:00:22,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 20:00:22,122 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:00:22,122 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:00:22,122 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable171 [2021-05-21 20:00:22,122 INFO L430 AbstractCegarLoop]: === Iteration 173 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 20:00:22,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:00:22,122 INFO L82 PathProgramCache]: Analyzing trace with hash 623453304, now seen corresponding path program 171 times [2021-05-21 20:00:22,122 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:00:22,122 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [294799515] [2021-05-21 20:00:22,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:00:22,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:00:22,169 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:00:22,170 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:00:22,170 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [294799515] [2021-05-21 20:00:22,170 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [294799515] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:00:22,170 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:00:22,170 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:00:22,170 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2124287023] [2021-05-21 20:00:22,170 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-21 20:00:22,170 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:00:22,170 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-21 20:00:22,170 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-05-21 20:00:22,170 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) [2021-05-21 20:00:22,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:00:22,291 INFO L93 Difference]: Finished difference Result 1737 states and 5007 transitions. [2021-05-21 20:00:22,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-21 20:00:22,292 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 [2021-05-21 20:00:22,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:00:22,293 INFO L225 Difference]: With dead ends: 1737 [2021-05-21 20:00:22,293 INFO L226 Difference]: Without dead ends: 1622 [2021-05-21 20:00:22,293 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 40.1ms TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-05-21 20:00:22,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1622 states. [2021-05-21 20:00:22,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1622 to 1476. [2021-05-21 20:00:22,306 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) [2021-05-21 20:00:22,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1476 states to 1476 states and 4296 transitions. [2021-05-21 20:00:22,308 INFO L78 Accepts]: Start accepts. Automaton has 1476 states and 4296 transitions. Word has length 26 [2021-05-21 20:00:22,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:00:22,308 INFO L482 AbstractCegarLoop]: Abstraction has 1476 states and 4296 transitions. [2021-05-21 20:00:22,308 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) [2021-05-21 20:00:22,308 INFO L276 IsEmpty]: Start isEmpty. Operand 1476 states and 4296 transitions. [2021-05-21 20:00:22,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 20:00:22,309 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:00:22,310 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:00:22,310 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable172 [2021-05-21 20:00:22,310 INFO L430 AbstractCegarLoop]: === Iteration 174 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 20:00:22,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:00:22,310 INFO L82 PathProgramCache]: Analyzing trace with hash 1210004152, now seen corresponding path program 172 times [2021-05-21 20:00:22,310 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:00:22,310 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [878805445] [2021-05-21 20:00:22,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:00:22,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:00:22,365 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:00:22,365 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:00:22,365 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [878805445] [2021-05-21 20:00:22,365 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [878805445] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:00:22,365 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:00:22,365 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-21 20:00:22,365 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1291453432] [2021-05-21 20:00:22,365 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:00:22,365 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:00:22,366 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:00:22,366 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:00:22,366 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) [2021-05-21 20:00:22,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:00:22,518 INFO L93 Difference]: Finished difference Result 1779 states and 5100 transitions. [2021-05-21 20:00:22,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:00:22,518 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 [2021-05-21 20:00:22,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:00:22,520 INFO L225 Difference]: With dead ends: 1779 [2021-05-21 20:00:22,520 INFO L226 Difference]: Without dead ends: 1623 [2021-05-21 20:00:22,521 INFO L777 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 [2021-05-21 20:00:22,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1623 states. [2021-05-21 20:00:22,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1623 to 1498. [2021-05-21 20:00:22,534 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) [2021-05-21 20:00:22,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1498 states to 1498 states and 4362 transitions. [2021-05-21 20:00:22,536 INFO L78 Accepts]: Start accepts. Automaton has 1498 states and 4362 transitions. Word has length 26 [2021-05-21 20:00:22,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:00:22,536 INFO L482 AbstractCegarLoop]: Abstraction has 1498 states and 4362 transitions. [2021-05-21 20:00:22,536 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:00:22,536 INFO L276 IsEmpty]: Start isEmpty. Operand 1498 states and 4362 transitions. [2021-05-21 20:00:22,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 20:00:22,537 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:00:22,537 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:00:22,537 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable173 [2021-05-21 20:00:22,537 INFO L430 AbstractCegarLoop]: === Iteration 175 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 20:00:22,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:00:22,538 INFO L82 PathProgramCache]: Analyzing trace with hash 497936310, now seen corresponding path program 173 times [2021-05-21 20:00:22,538 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:00:22,538 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1102080783] [2021-05-21 20:00:22,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:00:22,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:00:22,593 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:00:22,594 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:00:22,594 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1102080783] [2021-05-21 20:00:22,594 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1102080783] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:00:22,594 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:00:22,594 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-21 20:00:22,594 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126910222] [2021-05-21 20:00:22,594 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:00:22,594 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:00:22,594 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:00:22,594 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:00:22,594 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) [2021-05-21 20:00:22,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:00:22,751 INFO L93 Difference]: Finished difference Result 1823 states and 5246 transitions. [2021-05-21 20:00:22,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:00:22,751 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-05-21 20:00:22,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:00:22,753 INFO L225 Difference]: With dead ends: 1823 [2021-05-21 20:00:22,753 INFO L226 Difference]: Without dead ends: 1667 [2021-05-21 20:00:22,753 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 45.9ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:00:22,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1667 states. [2021-05-21 20:00:22,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1667 to 1522. [2021-05-21 20:00:22,766 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) [2021-05-21 20:00:22,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1522 states to 1522 states and 4433 transitions. [2021-05-21 20:00:22,768 INFO L78 Accepts]: Start accepts. Automaton has 1522 states and 4433 transitions. Word has length 26 [2021-05-21 20:00:22,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:00:22,768 INFO L482 AbstractCegarLoop]: Abstraction has 1522 states and 4433 transitions. [2021-05-21 20:00:22,768 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) [2021-05-21 20:00:22,768 INFO L276 IsEmpty]: Start isEmpty. Operand 1522 states and 4433 transitions. [2021-05-21 20:00:22,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 20:00:22,770 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:00:22,770 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:00:22,770 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable174 [2021-05-21 20:00:22,770 INFO L430 AbstractCegarLoop]: === Iteration 176 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 20:00:22,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:00:22,770 INFO L82 PathProgramCache]: Analyzing trace with hash -465295700, now seen corresponding path program 174 times [2021-05-21 20:00:22,770 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:00:22,770 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [338884598] [2021-05-21 20:00:22,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:00:22,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:00:22,811 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:00:22,811 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:00:22,811 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [338884598] [2021-05-21 20:00:22,811 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [338884598] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:00:22,811 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:00:22,811 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:00:22,811 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1777252428] [2021-05-21 20:00:22,811 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-21 20:00:22,812 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:00:22,812 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-21 20:00:22,812 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-05-21 20:00:22,812 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) [2021-05-21 20:00:22,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:00:22,927 INFO L93 Difference]: Finished difference Result 1900 states and 5461 transitions. [2021-05-21 20:00:22,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-21 20:00:22,927 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 [2021-05-21 20:00:22,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:00:22,929 INFO L225 Difference]: With dead ends: 1900 [2021-05-21 20:00:22,929 INFO L226 Difference]: Without dead ends: 1636 [2021-05-21 20:00:22,929 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 33.7ms TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-05-21 20:00:22,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1636 states. [2021-05-21 20:00:22,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1636 to 1508. [2021-05-21 20:00:22,941 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) [2021-05-21 20:00:22,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1508 states to 1508 states and 4358 transitions. [2021-05-21 20:00:22,943 INFO L78 Accepts]: Start accepts. Automaton has 1508 states and 4358 transitions. Word has length 26 [2021-05-21 20:00:22,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:00:22,943 INFO L482 AbstractCegarLoop]: Abstraction has 1508 states and 4358 transitions. [2021-05-21 20:00:22,943 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) [2021-05-21 20:00:22,944 INFO L276 IsEmpty]: Start isEmpty. Operand 1508 states and 4358 transitions. [2021-05-21 20:00:22,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 20:00:22,945 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:00:22,945 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:00:22,945 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable175 [2021-05-21 20:00:22,945 INFO L430 AbstractCegarLoop]: === Iteration 177 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 20:00:22,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:00:22,945 INFO L82 PathProgramCache]: Analyzing trace with hash -2044727346, now seen corresponding path program 175 times [2021-05-21 20:00:22,945 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:00:22,945 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1131549491] [2021-05-21 20:00:22,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:00:22,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:00:23,014 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:00:23,014 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:00:23,014 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1131549491] [2021-05-21 20:00:23,014 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1131549491] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:00:23,014 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:00:23,014 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-21 20:00:23,014 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [881668967] [2021-05-21 20:00:23,014 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:00:23,015 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:00:23,015 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:00:23,015 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:00:23,015 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) [2021-05-21 20:00:23,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:00:23,182 INFO L93 Difference]: Finished difference Result 1766 states and 4965 transitions. [2021-05-21 20:00:23,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:00:23,182 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-05-21 20:00:23,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:00:23,183 INFO L225 Difference]: With dead ends: 1766 [2021-05-21 20:00:23,183 INFO L226 Difference]: Without dead ends: 1508 [2021-05-21 20:00:23,184 INFO L777 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 [2021-05-21 20:00:23,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1508 states. [2021-05-21 20:00:23,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1508 to 1438. [2021-05-21 20:00:23,196 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) [2021-05-21 20:00:23,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1438 states to 1438 states and 4077 transitions. [2021-05-21 20:00:23,197 INFO L78 Accepts]: Start accepts. Automaton has 1438 states and 4077 transitions. Word has length 26 [2021-05-21 20:00:23,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:00:23,197 INFO L482 AbstractCegarLoop]: Abstraction has 1438 states and 4077 transitions. [2021-05-21 20:00:23,198 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:00:23,198 INFO L276 IsEmpty]: Start isEmpty. Operand 1438 states and 4077 transitions. [2021-05-21 20:00:23,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 20:00:23,199 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:00:23,199 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:00:23,199 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable176 [2021-05-21 20:00:23,199 INFO L430 AbstractCegarLoop]: === Iteration 178 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 20:00:23,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:00:23,199 INFO L82 PathProgramCache]: Analyzing trace with hash -1066489600, now seen corresponding path program 176 times [2021-05-21 20:00:23,199 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:00:23,199 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2143639526] [2021-05-21 20:00:23,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:00:23,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:00:23,272 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:00:23,273 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:00:23,273 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2143639526] [2021-05-21 20:00:23,273 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2143639526] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:00:23,273 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:00:23,273 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-21 20:00:23,273 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [655797776] [2021-05-21 20:00:23,273 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:00:23,273 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:00:23,273 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:00:23,273 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:00:23,273 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) [2021-05-21 20:00:23,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:00:23,438 INFO L93 Difference]: Finished difference Result 1656 states and 4633 transitions. [2021-05-21 20:00:23,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:00:23,438 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-05-21 20:00:23,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:00:23,440 INFO L225 Difference]: With dead ends: 1656 [2021-05-21 20:00:23,440 INFO L226 Difference]: Without dead ends: 1505 [2021-05-21 20:00:23,440 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 66.1ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:00:23,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1505 states. [2021-05-21 20:00:23,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1505 to 1438. [2021-05-21 20:00:23,452 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) [2021-05-21 20:00:23,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1438 states to 1438 states and 4065 transitions. [2021-05-21 20:00:23,454 INFO L78 Accepts]: Start accepts. Automaton has 1438 states and 4065 transitions. Word has length 26 [2021-05-21 20:00:23,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:00:23,454 INFO L482 AbstractCegarLoop]: Abstraction has 1438 states and 4065 transitions. [2021-05-21 20:00:23,454 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:00:23,454 INFO L276 IsEmpty]: Start isEmpty. Operand 1438 states and 4065 transitions. [2021-05-21 20:00:23,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 20:00:23,455 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:00:23,455 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:00:23,455 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable177 [2021-05-21 20:00:23,455 INFO L430 AbstractCegarLoop]: === Iteration 179 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 20:00:23,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:00:23,455 INFO L82 PathProgramCache]: Analyzing trace with hash -479938752, now seen corresponding path program 177 times [2021-05-21 20:00:23,455 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:00:23,455 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1479772744] [2021-05-21 20:00:23,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:00:23,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:00:23,508 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:00:23,508 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:00:23,508 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1479772744] [2021-05-21 20:00:23,508 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1479772744] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:00:23,508 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:00:23,508 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-21 20:00:23,508 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1743760675] [2021-05-21 20:00:23,509 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:00:23,509 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:00:23,509 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:00:23,509 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:00:23,509 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) [2021-05-21 20:00:23,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:00:23,677 INFO L93 Difference]: Finished difference Result 1661 states and 4643 transitions. [2021-05-21 20:00:23,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:00:23,678 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-05-21 20:00:23,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:00:23,679 INFO L225 Difference]: With dead ends: 1661 [2021-05-21 20:00:23,679 INFO L226 Difference]: Without dead ends: 1541 [2021-05-21 20:00:23,679 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 45.8ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:00:23,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1541 states. [2021-05-21 20:00:23,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1541 to 1464. [2021-05-21 20:00:23,692 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) [2021-05-21 20:00:23,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1464 states to 1464 states and 4141 transitions. [2021-05-21 20:00:23,693 INFO L78 Accepts]: Start accepts. Automaton has 1464 states and 4141 transitions. Word has length 26 [2021-05-21 20:00:23,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:00:23,693 INFO L482 AbstractCegarLoop]: Abstraction has 1464 states and 4141 transitions. [2021-05-21 20:00:23,693 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:00:23,694 INFO L276 IsEmpty]: Start isEmpty. Operand 1464 states and 4141 transitions. [2021-05-21 20:00:23,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 20:00:23,695 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:00:23,695 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:00:23,695 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable178 [2021-05-21 20:00:23,695 INFO L430 AbstractCegarLoop]: === Iteration 180 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 20:00:23,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:00:23,695 INFO L82 PathProgramCache]: Analyzing trace with hash -1192006594, now seen corresponding path program 178 times [2021-05-21 20:00:23,695 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:00:23,695 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1776562534] [2021-05-21 20:00:23,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:00:23,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:00:23,749 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:00:23,749 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:00:23,749 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1776562534] [2021-05-21 20:00:23,749 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1776562534] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:00:23,749 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:00:23,749 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-21 20:00:23,749 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [580741984] [2021-05-21 20:00:23,749 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:00:23,749 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:00:23,750 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:00:23,750 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:00:23,750 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) [2021-05-21 20:00:23,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:00:23,906 INFO L93 Difference]: Finished difference Result 1719 states and 4756 transitions. [2021-05-21 20:00:23,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:00:23,906 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-05-21 20:00:23,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:00:23,908 INFO L225 Difference]: With dead ends: 1719 [2021-05-21 20:00:23,908 INFO L226 Difference]: Without dead ends: 1599 [2021-05-21 20:00:23,908 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 45.5ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:00:23,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1599 states. [2021-05-21 20:00:23,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1599 to 1456. [2021-05-21 20:00:23,920 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) [2021-05-21 20:00:23,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1456 states to 1456 states and 4120 transitions. [2021-05-21 20:00:23,922 INFO L78 Accepts]: Start accepts. Automaton has 1456 states and 4120 transitions. Word has length 26 [2021-05-21 20:00:23,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:00:23,922 INFO L482 AbstractCegarLoop]: Abstraction has 1456 states and 4120 transitions. [2021-05-21 20:00:23,922 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:00:23,922 INFO L276 IsEmpty]: Start isEmpty. Operand 1456 states and 4120 transitions. [2021-05-21 20:00:23,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 20:00:23,923 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:00:23,923 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:00:23,923 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable179 [2021-05-21 20:00:23,923 INFO L430 AbstractCegarLoop]: === Iteration 181 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 20:00:23,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:00:23,924 INFO L82 PathProgramCache]: Analyzing trace with hash -1037569076, now seen corresponding path program 179 times [2021-05-21 20:00:23,924 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:00:23,924 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1827038228] [2021-05-21 20:00:23,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:00:23,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:00:23,976 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:00:23,976 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:00:23,976 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1827038228] [2021-05-21 20:00:23,976 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1827038228] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:00:23,976 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:00:23,976 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-21 20:00:23,977 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [281726733] [2021-05-21 20:00:23,977 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:00:23,977 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:00:23,977 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:00:23,977 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:00:23,977 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) [2021-05-21 20:00:24,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:00:24,131 INFO L93 Difference]: Finished difference Result 1748 states and 4846 transitions. [2021-05-21 20:00:24,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:00:24,131 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-05-21 20:00:24,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:00:24,133 INFO L225 Difference]: With dead ends: 1748 [2021-05-21 20:00:24,133 INFO L226 Difference]: Without dead ends: 1524 [2021-05-21 20:00:24,133 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 45.5ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:00:24,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1524 states. [2021-05-21 20:00:24,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1524 to 1396. [2021-05-21 20:00:24,145 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) [2021-05-21 20:00:24,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1396 states to 1396 states and 3950 transitions. [2021-05-21 20:00:24,147 INFO L78 Accepts]: Start accepts. Automaton has 1396 states and 3950 transitions. Word has length 26 [2021-05-21 20:00:24,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:00:24,147 INFO L482 AbstractCegarLoop]: Abstraction has 1396 states and 3950 transitions. [2021-05-21 20:00:24,147 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:00:24,147 INFO L276 IsEmpty]: Start isEmpty. Operand 1396 states and 3950 transitions. [2021-05-21 20:00:24,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 20:00:24,148 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:00:24,148 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:00:24,148 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable180 [2021-05-21 20:00:24,148 INFO L430 AbstractCegarLoop]: === Iteration 182 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 20:00:24,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:00:24,148 INFO L82 PathProgramCache]: Analyzing trace with hash 538943446, now seen corresponding path program 180 times [2021-05-21 20:00:24,148 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:00:24,149 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2124893543] [2021-05-21 20:00:24,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:00:24,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:00:24,195 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:00:24,195 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:00:24,195 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2124893543] [2021-05-21 20:00:24,195 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2124893543] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:00:24,195 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:00:24,195 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:00:24,195 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [582415321] [2021-05-21 20:00:24,195 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-21 20:00:24,195 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:00:24,196 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-21 20:00:24,196 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-05-21 20:00:24,196 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) [2021-05-21 20:00:24,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:00:24,323 INFO L93 Difference]: Finished difference Result 1674 states and 4682 transitions. [2021-05-21 20:00:24,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-21 20:00:24,323 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 [2021-05-21 20:00:24,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:00:24,325 INFO L225 Difference]: With dead ends: 1674 [2021-05-21 20:00:24,325 INFO L226 Difference]: Without dead ends: 1589 [2021-05-21 20:00:24,325 INFO L777 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 [2021-05-21 20:00:24,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1589 states. [2021-05-21 20:00:24,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1589 to 1426. [2021-05-21 20:00:24,337 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) [2021-05-21 20:00:24,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1426 states to 1426 states and 4032 transitions. [2021-05-21 20:00:24,339 INFO L78 Accepts]: Start accepts. Automaton has 1426 states and 4032 transitions. Word has length 26 [2021-05-21 20:00:24,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:00:24,339 INFO L482 AbstractCegarLoop]: Abstraction has 1426 states and 4032 transitions. [2021-05-21 20:00:24,339 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) [2021-05-21 20:00:24,339 INFO L276 IsEmpty]: Start isEmpty. Operand 1426 states and 4032 transitions. [2021-05-21 20:00:24,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 20:00:24,340 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:00:24,340 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:00:24,340 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable181 [2021-05-21 20:00:24,340 INFO L430 AbstractCegarLoop]: === Iteration 183 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 20:00:24,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:00:24,341 INFO L82 PathProgramCache]: Analyzing trace with hash 1408388054, now seen corresponding path program 181 times [2021-05-21 20:00:24,341 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:00:24,341 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1160254170] [2021-05-21 20:00:24,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:00:24,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:00:24,397 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:00:24,397 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:00:24,397 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1160254170] [2021-05-21 20:00:24,397 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1160254170] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:00:24,397 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:00:24,397 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-21 20:00:24,397 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1299190984] [2021-05-21 20:00:24,397 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:00:24,398 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:00:24,398 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:00:24,398 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:00:24,398 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) [2021-05-21 20:00:24,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:00:24,550 INFO L93 Difference]: Finished difference Result 1703 states and 4751 transitions. [2021-05-21 20:00:24,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:00:24,550 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-05-21 20:00:24,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:00:24,551 INFO L225 Difference]: With dead ends: 1703 [2021-05-21 20:00:24,552 INFO L226 Difference]: Without dead ends: 1516 [2021-05-21 20:00:24,552 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 45.5ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:00:24,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1516 states. [2021-05-21 20:00:24,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1516 to 1388. [2021-05-21 20:00:24,563 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) [2021-05-21 20:00:24,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1388 states to 1388 states and 3911 transitions. [2021-05-21 20:00:24,565 INFO L78 Accepts]: Start accepts. Automaton has 1388 states and 3911 transitions. Word has length 26 [2021-05-21 20:00:24,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:00:24,565 INFO L482 AbstractCegarLoop]: Abstraction has 1388 states and 3911 transitions. [2021-05-21 20:00:24,565 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:00:24,565 INFO L276 IsEmpty]: Start isEmpty. Operand 1388 states and 3911 transitions. [2021-05-21 20:00:24,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 20:00:24,566 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:00:24,567 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:00:24,567 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable182 [2021-05-21 20:00:24,567 INFO L430 AbstractCegarLoop]: === Iteration 184 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 20:00:24,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:00:24,567 INFO L82 PathProgramCache]: Analyzing trace with hash -1178797324, now seen corresponding path program 182 times [2021-05-21 20:00:24,567 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:00:24,567 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1806122614] [2021-05-21 20:00:24,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:00:24,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:00:24,622 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:00:24,622 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:00:24,622 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1806122614] [2021-05-21 20:00:24,622 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1806122614] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:00:24,622 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:00:24,622 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-21 20:00:24,622 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [86508249] [2021-05-21 20:00:24,622 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:00:24,622 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:00:24,622 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:00:24,623 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:00:24,623 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) [2021-05-21 20:00:24,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:00:24,777 INFO L93 Difference]: Finished difference Result 1583 states and 4394 transitions. [2021-05-21 20:00:24,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:00:24,777 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-05-21 20:00:24,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:00:24,779 INFO L225 Difference]: With dead ends: 1583 [2021-05-21 20:00:24,779 INFO L226 Difference]: Without dead ends: 1498 [2021-05-21 20:00:24,779 INFO L777 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 [2021-05-21 20:00:24,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1498 states. [2021-05-21 20:00:24,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1498 to 1378. [2021-05-21 20:00:24,791 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) [2021-05-21 20:00:24,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1378 states to 1378 states and 3890 transitions. [2021-05-21 20:00:24,792 INFO L78 Accepts]: Start accepts. Automaton has 1378 states and 3890 transitions. Word has length 26 [2021-05-21 20:00:24,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:00:24,792 INFO L482 AbstractCegarLoop]: Abstraction has 1378 states and 3890 transitions. [2021-05-21 20:00:24,792 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:00:24,792 INFO L276 IsEmpty]: Start isEmpty. Operand 1378 states and 3890 transitions. [2021-05-21 20:00:24,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 20:00:24,794 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:00:24,794 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:00:24,794 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable183 [2021-05-21 20:00:24,794 INFO L430 AbstractCegarLoop]: === Iteration 185 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 20:00:24,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:00:24,794 INFO L82 PathProgramCache]: Analyzing trace with hash -309352716, now seen corresponding path program 183 times [2021-05-21 20:00:24,794 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:00:24,794 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [742359598] [2021-05-21 20:00:24,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:00:24,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:00:24,851 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:00:24,851 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:00:24,851 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [742359598] [2021-05-21 20:00:24,851 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [742359598] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:00:24,851 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:00:24,851 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-21 20:00:24,851 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [662007196] [2021-05-21 20:00:24,851 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:00:24,851 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:00:24,851 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:00:24,852 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:00:24,852 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) [2021-05-21 20:00:25,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:00:25,008 INFO L93 Difference]: Finished difference Result 1537 states and 4286 transitions. [2021-05-21 20:00:25,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:00:25,009 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-05-21 20:00:25,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:00:25,010 INFO L225 Difference]: With dead ends: 1537 [2021-05-21 20:00:25,010 INFO L226 Difference]: Without dead ends: 1442 [2021-05-21 20:00:25,010 INFO L777 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 [2021-05-21 20:00:25,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1442 states. [2021-05-21 20:00:25,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1442 to 1390. [2021-05-21 20:00:25,022 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) [2021-05-21 20:00:25,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1390 states to 1390 states and 3916 transitions. [2021-05-21 20:00:25,024 INFO L78 Accepts]: Start accepts. Automaton has 1390 states and 3916 transitions. Word has length 26 [2021-05-21 20:00:25,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:00:25,024 INFO L482 AbstractCegarLoop]: Abstraction has 1390 states and 3916 transitions. [2021-05-21 20:00:25,024 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) [2021-05-21 20:00:25,024 INFO L276 IsEmpty]: Start isEmpty. Operand 1390 states and 3916 transitions. [2021-05-21 20:00:25,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 20:00:25,025 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:00:25,025 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:00:25,025 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable184 [2021-05-21 20:00:25,025 INFO L430 AbstractCegarLoop]: === Iteration 186 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 20:00:25,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:00:25,026 INFO L82 PathProgramCache]: Analyzing trace with hash 1943506074, now seen corresponding path program 184 times [2021-05-21 20:00:25,026 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:00:25,026 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [599024825] [2021-05-21 20:00:25,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:00:25,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:00:25,073 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:00:25,073 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:00:25,073 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [599024825] [2021-05-21 20:00:25,073 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [599024825] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:00:25,073 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:00:25,073 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:00:25,073 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506479963] [2021-05-21 20:00:25,073 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-21 20:00:25,073 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:00:25,074 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-21 20:00:25,074 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-05-21 20:00:25,074 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) [2021-05-21 20:00:25,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:00:25,201 INFO L93 Difference]: Finished difference Result 1645 states and 4600 transitions. [2021-05-21 20:00:25,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-21 20:00:25,202 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 [2021-05-21 20:00:25,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:00:25,203 INFO L225 Difference]: With dead ends: 1645 [2021-05-21 20:00:25,203 INFO L226 Difference]: Without dead ends: 1562 [2021-05-21 20:00:25,204 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 37.4ms TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-05-21 20:00:25,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1562 states. [2021-05-21 20:00:25,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1562 to 1396. [2021-05-21 20:00:25,216 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) [2021-05-21 20:00:25,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1396 states to 1396 states and 3925 transitions. [2021-05-21 20:00:25,217 INFO L78 Accepts]: Start accepts. Automaton has 1396 states and 3925 transitions. Word has length 26 [2021-05-21 20:00:25,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:00:25,218 INFO L482 AbstractCegarLoop]: Abstraction has 1396 states and 3925 transitions. [2021-05-21 20:00:25,218 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) [2021-05-21 20:00:25,218 INFO L276 IsEmpty]: Start isEmpty. Operand 1396 states and 3925 transitions. [2021-05-21 20:00:25,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 20:00:25,219 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:00:25,219 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:00:25,219 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable185 [2021-05-21 20:00:25,219 INFO L430 AbstractCegarLoop]: === Iteration 187 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 20:00:25,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:00:25,220 INFO L82 PathProgramCache]: Analyzing trace with hash -1764910374, now seen corresponding path program 185 times [2021-05-21 20:00:25,220 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:00:25,220 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2101629402] [2021-05-21 20:00:25,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:00:25,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:00:25,273 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:00:25,273 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:00:25,273 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2101629402] [2021-05-21 20:00:25,273 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2101629402] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:00:25,273 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:00:25,273 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-21 20:00:25,273 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [118820456] [2021-05-21 20:00:25,273 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:00:25,273 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:00:25,274 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:00:25,274 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:00:25,274 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) [2021-05-21 20:00:25,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:00:25,436 INFO L93 Difference]: Finished difference Result 1543 states and 4300 transitions. [2021-05-21 20:00:25,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:00:25,436 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-05-21 20:00:25,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:00:25,438 INFO L225 Difference]: With dead ends: 1543 [2021-05-21 20:00:25,438 INFO L226 Difference]: Without dead ends: 1455 [2021-05-21 20:00:25,438 INFO L777 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 [2021-05-21 20:00:25,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1455 states. [2021-05-21 20:00:25,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1455 to 1392. [2021-05-21 20:00:25,450 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) [2021-05-21 20:00:25,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1392 states to 1392 states and 3919 transitions. [2021-05-21 20:00:25,451 INFO L78 Accepts]: Start accepts. Automaton has 1392 states and 3919 transitions. Word has length 26 [2021-05-21 20:00:25,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:00:25,451 INFO L482 AbstractCegarLoop]: Abstraction has 1392 states and 3919 transitions. [2021-05-21 20:00:25,451 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:00:25,452 INFO L276 IsEmpty]: Start isEmpty. Operand 1392 states and 3919 transitions. [2021-05-21 20:00:25,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 20:00:25,453 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:00:25,453 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:00:25,453 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable186 [2021-05-21 20:00:25,453 INFO L430 AbstractCegarLoop]: === Iteration 188 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 20:00:25,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:00:25,453 INFO L82 PathProgramCache]: Analyzing trace with hash 1817989080, now seen corresponding path program 186 times [2021-05-21 20:00:25,453 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:00:25,453 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1631492762] [2021-05-21 20:00:25,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:00:25,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:00:25,509 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:00:25,509 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:00:25,510 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1631492762] [2021-05-21 20:00:25,510 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1631492762] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:00:25,510 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:00:25,510 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-21 20:00:25,510 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1988517196] [2021-05-21 20:00:25,510 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:00:25,510 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:00:25,510 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:00:25,510 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:00:25,510 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) [2021-05-21 20:00:25,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:00:25,668 INFO L93 Difference]: Finished difference Result 1684 states and 4690 transitions. [2021-05-21 20:00:25,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:00:25,668 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-05-21 20:00:25,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:00:25,670 INFO L225 Difference]: With dead ends: 1684 [2021-05-21 20:00:25,670 INFO L226 Difference]: Without dead ends: 1596 [2021-05-21 20:00:25,670 INFO L777 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 [2021-05-21 20:00:25,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1596 states. [2021-05-21 20:00:25,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1596 to 1416. [2021-05-21 20:00:25,682 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) [2021-05-21 20:00:25,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1416 states to 1416 states and 3990 transitions. [2021-05-21 20:00:25,684 INFO L78 Accepts]: Start accepts. Automaton has 1416 states and 3990 transitions. Word has length 26 [2021-05-21 20:00:25,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:00:25,684 INFO L482 AbstractCegarLoop]: Abstraction has 1416 states and 3990 transitions. [2021-05-21 20:00:25,684 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:00:25,684 INFO L276 IsEmpty]: Start isEmpty. Operand 1416 states and 3990 transitions. [2021-05-21 20:00:25,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 20:00:25,686 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:00:25,686 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:00:25,686 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable187 [2021-05-21 20:00:25,686 INFO L430 AbstractCegarLoop]: === Iteration 189 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 20:00:25,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:00:25,686 INFO L82 PathProgramCache]: Analyzing trace with hash 854757070, now seen corresponding path program 187 times [2021-05-21 20:00:25,686 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:00:25,686 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2112996493] [2021-05-21 20:00:25,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:00:25,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:00:25,733 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:00:25,733 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:00:25,733 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2112996493] [2021-05-21 20:00:25,733 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2112996493] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:00:25,733 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:00:25,733 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:00:25,733 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [840407021] [2021-05-21 20:00:25,733 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-21 20:00:25,733 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:00:25,733 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-21 20:00:25,733 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-05-21 20:00:25,734 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) [2021-05-21 20:00:25,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:00:25,857 INFO L93 Difference]: Finished difference Result 1704 states and 4749 transitions. [2021-05-21 20:00:25,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-21 20:00:25,858 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 [2021-05-21 20:00:25,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:00:25,859 INFO L225 Difference]: With dead ends: 1704 [2021-05-21 20:00:25,859 INFO L226 Difference]: Without dead ends: 1544 [2021-05-21 20:00:25,860 INFO L777 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 [2021-05-21 20:00:25,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1544 states. [2021-05-21 20:00:25,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1544 to 1404. [2021-05-21 20:00:25,872 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) [2021-05-21 20:00:25,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1404 states to 1404 states and 3956 transitions. [2021-05-21 20:00:25,873 INFO L78 Accepts]: Start accepts. Automaton has 1404 states and 3956 transitions. Word has length 26 [2021-05-21 20:00:25,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:00:25,873 INFO L482 AbstractCegarLoop]: Abstraction has 1404 states and 3956 transitions. [2021-05-21 20:00:25,873 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) [2021-05-21 20:00:25,873 INFO L276 IsEmpty]: Start isEmpty. Operand 1404 states and 3956 transitions. [2021-05-21 20:00:25,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 20:00:25,875 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:00:25,875 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:00:25,875 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable188 [2021-05-21 20:00:25,875 INFO L430 AbstractCegarLoop]: === Iteration 190 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 20:00:25,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:00:25,875 INFO L82 PathProgramCache]: Analyzing trace with hash -724674576, now seen corresponding path program 188 times [2021-05-21 20:00:25,875 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:00:25,875 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [364633247] [2021-05-21 20:00:25,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:00:25,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:00:25,929 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:00:25,929 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:00:25,929 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [364633247] [2021-05-21 20:00:25,929 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [364633247] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:00:25,929 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:00:25,929 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-21 20:00:25,929 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [313479335] [2021-05-21 20:00:25,930 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:00:25,930 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:00:25,930 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:00:25,930 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:00:25,930 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) [2021-05-21 20:00:26,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:00:26,085 INFO L93 Difference]: Finished difference Result 1611 states and 4453 transitions. [2021-05-21 20:00:26,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:00:26,086 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 [2021-05-21 20:00:26,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:00:26,087 INFO L225 Difference]: With dead ends: 1611 [2021-05-21 20:00:26,087 INFO L226 Difference]: Without dead ends: 1492 [2021-05-21 20:00:26,087 INFO L777 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 [2021-05-21 20:00:26,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1492 states. [2021-05-21 20:00:26,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1492 to 1394. [2021-05-21 20:00:26,099 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) [2021-05-21 20:00:26,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1394 states to 1394 states and 3934 transitions. [2021-05-21 20:00:26,101 INFO L78 Accepts]: Start accepts. Automaton has 1394 states and 3934 transitions. Word has length 26 [2021-05-21 20:00:26,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:00:26,101 INFO L482 AbstractCegarLoop]: Abstraction has 1394 states and 3934 transitions. [2021-05-21 20:00:26,101 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:00:26,101 INFO L276 IsEmpty]: Start isEmpty. Operand 1394 states and 3934 transitions. [2021-05-21 20:00:26,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 20:00:26,103 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:00:26,103 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:00:26,103 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable189 [2021-05-21 20:00:26,103 INFO L430 AbstractCegarLoop]: === Iteration 191 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 20:00:26,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:00:26,103 INFO L82 PathProgramCache]: Analyzing trace with hash -903833710, now seen corresponding path program 189 times [2021-05-21 20:00:26,103 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:00:26,103 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1167209680] [2021-05-21 20:00:26,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:00:26,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:00:26,163 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:00:26,163 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:00:26,163 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1167209680] [2021-05-21 20:00:26,163 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1167209680] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:00:26,163 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:00:26,163 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-21 20:00:26,163 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1232139113] [2021-05-21 20:00:26,163 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:00:26,163 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:00:26,164 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:00:26,164 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:00:26,164 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) [2021-05-21 20:00:26,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:00:26,323 INFO L93 Difference]: Finished difference Result 1557 states and 4341 transitions. [2021-05-21 20:00:26,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:00:26,323 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 [2021-05-21 20:00:26,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:00:26,325 INFO L225 Difference]: With dead ends: 1557 [2021-05-21 20:00:26,325 INFO L226 Difference]: Without dead ends: 1472 [2021-05-21 20:00:26,325 INFO L777 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 [2021-05-21 20:00:26,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1472 states. [2021-05-21 20:00:26,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1472 to 1396. [2021-05-21 20:00:26,337 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) [2021-05-21 20:00:26,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1396 states to 1396 states and 3942 transitions. [2021-05-21 20:00:26,339 INFO L78 Accepts]: Start accepts. Automaton has 1396 states and 3942 transitions. Word has length 26 [2021-05-21 20:00:26,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:00:26,339 INFO L482 AbstractCegarLoop]: Abstraction has 1396 states and 3942 transitions. [2021-05-21 20:00:26,339 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:00:26,339 INFO L276 IsEmpty]: Start isEmpty. Operand 1396 states and 3942 transitions. [2021-05-21 20:00:26,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 20:00:26,340 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:00:26,340 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:00:26,340 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable190 [2021-05-21 20:00:26,340 INFO L430 AbstractCegarLoop]: === Iteration 192 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 20:00:26,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:00:26,340 INFO L82 PathProgramCache]: Analyzing trace with hash -34389102, now seen corresponding path program 190 times [2021-05-21 20:00:26,341 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:00:26,341 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2012945651] [2021-05-21 20:00:26,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:00:26,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:00:26,394 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:00:26,395 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:00:26,395 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2012945651] [2021-05-21 20:00:26,395 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2012945651] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:00:26,395 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:00:26,395 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-21 20:00:26,395 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120400674] [2021-05-21 20:00:26,395 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:00:26,395 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:00:26,395 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:00:26,395 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:00:26,395 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) [2021-05-21 20:00:26,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:00:26,556 INFO L93 Difference]: Finished difference Result 1544 states and 4317 transitions. [2021-05-21 20:00:26,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:00:26,556 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-05-21 20:00:26,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:00:26,558 INFO L225 Difference]: With dead ends: 1544 [2021-05-21 20:00:26,558 INFO L226 Difference]: Without dead ends: 1449 [2021-05-21 20:00:26,558 INFO L777 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 [2021-05-21 20:00:26,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1449 states. [2021-05-21 20:00:26,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1449 to 1400. [2021-05-21 20:00:26,569 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) [2021-05-21 20:00:26,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1400 states to 1400 states and 3955 transitions. [2021-05-21 20:00:26,571 INFO L78 Accepts]: Start accepts. Automaton has 1400 states and 3955 transitions. Word has length 26 [2021-05-21 20:00:26,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:00:26,571 INFO L482 AbstractCegarLoop]: Abstraction has 1400 states and 3955 transitions. [2021-05-21 20:00:26,571 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:00:26,571 INFO L276 IsEmpty]: Start isEmpty. Operand 1400 states and 3955 transitions. [2021-05-21 20:00:26,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 20:00:26,572 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:00:26,572 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:00:26,573 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable191 [2021-05-21 20:00:26,573 INFO L430 AbstractCegarLoop]: === Iteration 193 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 20:00:26,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:00:26,573 INFO L82 PathProgramCache]: Analyzing trace with hash -1503100332, now seen corresponding path program 191 times [2021-05-21 20:00:26,573 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:00:26,573 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [39887618] [2021-05-21 20:00:26,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:00:26,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:00:26,632 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:00:26,633 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:00:26,633 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [39887618] [2021-05-21 20:00:26,633 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [39887618] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:00:26,633 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:00:26,633 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-21 20:00:26,633 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [396447613] [2021-05-21 20:00:26,633 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:00:26,633 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:00:26,633 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:00:26,633 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:00:26,633 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) [2021-05-21 20:00:26,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:00:26,794 INFO L93 Difference]: Finished difference Result 1551 states and 4333 transitions. [2021-05-21 20:00:26,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:00:26,794 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-05-21 20:00:26,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:00:26,796 INFO L225 Difference]: With dead ends: 1551 [2021-05-21 20:00:26,796 INFO L226 Difference]: Without dead ends: 1466 [2021-05-21 20:00:26,796 INFO L777 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 [2021-05-21 20:00:26,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1466 states. [2021-05-21 20:00:26,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1466 to 1398. [2021-05-21 20:00:26,807 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) [2021-05-21 20:00:26,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1398 states to 1398 states and 3948 transitions. [2021-05-21 20:00:26,809 INFO L78 Accepts]: Start accepts. Automaton has 1398 states and 3948 transitions. Word has length 26 [2021-05-21 20:00:26,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:00:26,809 INFO L482 AbstractCegarLoop]: Abstraction has 1398 states and 3948 transitions. [2021-05-21 20:00:26,809 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:00:26,809 INFO L276 IsEmpty]: Start isEmpty. Operand 1398 states and 3948 transitions. [2021-05-21 20:00:26,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 20:00:26,811 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:00:26,811 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:00:26,811 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable192 [2021-05-21 20:00:26,811 INFO L430 AbstractCegarLoop]: === Iteration 194 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 20:00:26,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:00:26,811 INFO L82 PathProgramCache]: Analyzing trace with hash -2076497608, now seen corresponding path program 192 times [2021-05-21 20:00:26,811 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:00:26,811 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1936435852] [2021-05-21 20:00:26,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:00:26,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:00:26,866 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:00:26,866 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:00:26,866 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1936435852] [2021-05-21 20:00:26,866 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1936435852] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:00:26,866 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:00:26,867 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-21 20:00:26,867 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1219424408] [2021-05-21 20:00:26,867 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:00:26,867 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:00:26,867 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:00:26,867 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:00:26,867 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) [2021-05-21 20:00:27,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:00:27,030 INFO L93 Difference]: Finished difference Result 1561 states and 4348 transitions. [2021-05-21 20:00:27,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:00:27,031 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-05-21 20:00:27,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:00:27,032 INFO L225 Difference]: With dead ends: 1561 [2021-05-21 20:00:27,032 INFO L226 Difference]: Without dead ends: 1478 [2021-05-21 20:00:27,032 INFO L777 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 [2021-05-21 20:00:27,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1478 states. [2021-05-21 20:00:27,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1478 to 1398. [2021-05-21 20:00:27,044 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) [2021-05-21 20:00:27,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1398 states to 1398 states and 3946 transitions. [2021-05-21 20:00:27,046 INFO L78 Accepts]: Start accepts. Automaton has 1398 states and 3946 transitions. Word has length 26 [2021-05-21 20:00:27,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:00:27,046 INFO L482 AbstractCegarLoop]: Abstraction has 1398 states and 3946 transitions. [2021-05-21 20:00:27,046 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:00:27,046 INFO L276 IsEmpty]: Start isEmpty. Operand 1398 states and 3946 transitions. [2021-05-21 20:00:27,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 20:00:27,047 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:00:27,047 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:00:27,047 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable193 [2021-05-21 20:00:27,047 INFO L430 AbstractCegarLoop]: === Iteration 195 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 20:00:27,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:00:27,047 INFO L82 PathProgramCache]: Analyzing trace with hash -1489946760, now seen corresponding path program 193 times [2021-05-21 20:00:27,048 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:00:27,048 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [191027170] [2021-05-21 20:00:27,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:00:27,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:00:27,103 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:00:27,103 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:00:27,103 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [191027170] [2021-05-21 20:00:27,103 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [191027170] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:00:27,103 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:00:27,103 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-21 20:00:27,103 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [336528852] [2021-05-21 20:00:27,103 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:00:27,103 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:00:27,103 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:00:27,103 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:00:27,103 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) [2021-05-21 20:00:27,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:00:27,266 INFO L93 Difference]: Finished difference Result 1541 states and 4312 transitions. [2021-05-21 20:00:27,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:00:27,266 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-05-21 20:00:27,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:00:27,268 INFO L225 Difference]: With dead ends: 1541 [2021-05-21 20:00:27,268 INFO L226 Difference]: Without dead ends: 1453 [2021-05-21 20:00:27,268 INFO L777 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 [2021-05-21 20:00:27,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1453 states. [2021-05-21 20:00:27,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1453 to 1399. [2021-05-21 20:00:27,280 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) [2021-05-21 20:00:27,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1399 states to 1399 states and 3950 transitions. [2021-05-21 20:00:27,281 INFO L78 Accepts]: Start accepts. Automaton has 1399 states and 3950 transitions. Word has length 26 [2021-05-21 20:00:27,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:00:27,282 INFO L482 AbstractCegarLoop]: Abstraction has 1399 states and 3950 transitions. [2021-05-21 20:00:27,282 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) [2021-05-21 20:00:27,282 INFO L276 IsEmpty]: Start isEmpty. Operand 1399 states and 3950 transitions. [2021-05-21 20:00:27,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 20:00:27,283 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:00:27,283 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:00:27,283 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable194 [2021-05-21 20:00:27,283 INFO L430 AbstractCegarLoop]: === Iteration 196 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 20:00:27,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:00:27,283 INFO L82 PathProgramCache]: Analyzing trace with hash 2092952694, now seen corresponding path program 194 times [2021-05-21 20:00:27,283 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:00:27,283 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1743334993] [2021-05-21 20:00:27,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:00:27,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:00:27,339 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:00:27,339 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:00:27,339 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1743334993] [2021-05-21 20:00:27,339 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1743334993] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:00:27,339 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:00:27,339 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-21 20:00:27,339 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [330288966] [2021-05-21 20:00:27,339 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:00:27,339 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:00:27,339 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:00:27,339 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:00:27,340 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) [2021-05-21 20:00:27,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:00:27,504 INFO L93 Difference]: Finished difference Result 1549 states and 4315 transitions. [2021-05-21 20:00:27,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:00:27,504 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 [2021-05-21 20:00:27,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:00:27,505 INFO L225 Difference]: With dead ends: 1549 [2021-05-21 20:00:27,506 INFO L226 Difference]: Without dead ends: 1461 [2021-05-21 20:00:27,506 INFO L777 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 [2021-05-21 20:00:27,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1461 states. [2021-05-21 20:00:27,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1461 to 1400. [2021-05-21 20:00:27,517 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) [2021-05-21 20:00:27,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1400 states to 1400 states and 3955 transitions. [2021-05-21 20:00:27,519 INFO L78 Accepts]: Start accepts. Automaton has 1400 states and 3955 transitions. Word has length 26 [2021-05-21 20:00:27,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:00:27,519 INFO L482 AbstractCegarLoop]: Abstraction has 1400 states and 3955 transitions. [2021-05-21 20:00:27,519 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:00:27,519 INFO L276 IsEmpty]: Start isEmpty. Operand 1400 states and 3955 transitions. [2021-05-21 20:00:27,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 20:00:27,520 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:00:27,520 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:00:27,520 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable195 [2021-05-21 20:00:27,520 INFO L430 AbstractCegarLoop]: === Iteration 197 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 20:00:27,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:00:27,521 INFO L82 PathProgramCache]: Analyzing trace with hash -1110641676, now seen corresponding path program 195 times [2021-05-21 20:00:27,521 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:00:27,521 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1616850981] [2021-05-21 20:00:27,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:00:27,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:00:27,577 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:00:27,577 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:00:27,577 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1616850981] [2021-05-21 20:00:27,577 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1616850981] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:00:27,577 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:00:27,577 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-21 20:00:27,577 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1516624123] [2021-05-21 20:00:27,578 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:00:27,578 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:00:27,578 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:00:27,578 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:00:27,578 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) [2021-05-21 20:00:27,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:00:27,740 INFO L93 Difference]: Finished difference Result 1607 states and 4488 transitions. [2021-05-21 20:00:27,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:00:27,741 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-05-21 20:00:27,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:00:27,742 INFO L225 Difference]: With dead ends: 1607 [2021-05-21 20:00:27,742 INFO L226 Difference]: Without dead ends: 1522 [2021-05-21 20:00:27,742 INFO L777 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 [2021-05-21 20:00:27,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1522 states. [2021-05-21 20:00:27,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1522 to 1400. [2021-05-21 20:00:27,754 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) [2021-05-21 20:00:27,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1400 states to 1400 states and 3955 transitions. [2021-05-21 20:00:27,756 INFO L78 Accepts]: Start accepts. Automaton has 1400 states and 3955 transitions. Word has length 26 [2021-05-21 20:00:27,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:00:27,756 INFO L482 AbstractCegarLoop]: Abstraction has 1400 states and 3955 transitions. [2021-05-21 20:00:27,756 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) [2021-05-21 20:00:27,756 INFO L276 IsEmpty]: Start isEmpty. Operand 1400 states and 3955 transitions. [2021-05-21 20:00:27,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 20:00:27,757 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:00:27,757 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:00:27,757 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable196 [2021-05-21 20:00:27,757 INFO L430 AbstractCegarLoop]: === Iteration 198 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 20:00:27,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:00:27,758 INFO L82 PathProgramCache]: Analyzing trace with hash -241197068, now seen corresponding path program 196 times [2021-05-21 20:00:27,758 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:00:27,758 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [165852301] [2021-05-21 20:00:27,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:00:27,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:00:27,813 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:00:27,813 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:00:27,813 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [165852301] [2021-05-21 20:00:27,813 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [165852301] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:00:27,814 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:00:27,814 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-21 20:00:27,814 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1278314166] [2021-05-21 20:00:27,814 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:00:27,814 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:00:27,814 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:00:27,814 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:00:27,814 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) [2021-05-21 20:00:27,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:00:27,973 INFO L93 Difference]: Finished difference Result 1617 states and 4532 transitions. [2021-05-21 20:00:27,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:00:27,974 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-05-21 20:00:27,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:00:27,975 INFO L225 Difference]: With dead ends: 1617 [2021-05-21 20:00:27,975 INFO L226 Difference]: Without dead ends: 1522 [2021-05-21 20:00:27,976 INFO L777 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 [2021-05-21 20:00:27,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1522 states. [2021-05-21 20:00:27,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1522 to 1407. [2021-05-21 20:00:27,988 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) [2021-05-21 20:00:27,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1407 states to 1407 states and 3972 transitions. [2021-05-21 20:00:27,989 INFO L78 Accepts]: Start accepts. Automaton has 1407 states and 3972 transitions. Word has length 26 [2021-05-21 20:00:27,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:00:27,989 INFO L482 AbstractCegarLoop]: Abstraction has 1407 states and 3972 transitions. [2021-05-21 20:00:27,990 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:00:27,990 INFO L276 IsEmpty]: Start isEmpty. Operand 1407 states and 3972 transitions. [2021-05-21 20:00:27,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 20:00:27,991 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:00:27,991 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:00:27,991 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable197 [2021-05-21 20:00:27,991 INFO L430 AbstractCegarLoop]: === Iteration 199 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 20:00:27,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:00:27,991 INFO L82 PathProgramCache]: Analyzing trace with hash -495542802, now seen corresponding path program 197 times [2021-05-21 20:00:27,991 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:00:27,991 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [291742793] [2021-05-21 20:00:27,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:00:27,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:00:28,045 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:00:28,046 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:00:28,046 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [291742793] [2021-05-21 20:00:28,046 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [291742793] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:00:28,046 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:00:28,046 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-21 20:00:28,046 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [592070272] [2021-05-21 20:00:28,046 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:00:28,046 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:00:28,046 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:00:28,046 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:00:28,046 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) [2021-05-21 20:00:28,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:00:28,212 INFO L93 Difference]: Finished difference Result 1602 states and 4492 transitions. [2021-05-21 20:00:28,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:00:28,212 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-05-21 20:00:28,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:00:28,214 INFO L225 Difference]: With dead ends: 1602 [2021-05-21 20:00:28,214 INFO L226 Difference]: Without dead ends: 1502 [2021-05-21 20:00:28,214 INFO L777 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 [2021-05-21 20:00:28,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1502 states. [2021-05-21 20:00:28,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1502 to 1405. [2021-05-21 20:00:28,226 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) [2021-05-21 20:00:28,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1405 states to 1405 states and 3969 transitions. [2021-05-21 20:00:28,228 INFO L78 Accepts]: Start accepts. Automaton has 1405 states and 3969 transitions. Word has length 26 [2021-05-21 20:00:28,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:00:28,228 INFO L482 AbstractCegarLoop]: Abstraction has 1405 states and 3969 transitions. [2021-05-21 20:00:28,228 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:00:28,228 INFO L276 IsEmpty]: Start isEmpty. Operand 1405 states and 3969 transitions. [2021-05-21 20:00:28,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 20:00:28,229 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:00:28,229 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:00:28,229 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable198 [2021-05-21 20:00:28,229 INFO L430 AbstractCegarLoop]: === Iteration 200 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 20:00:28,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:00:28,229 INFO L82 PathProgramCache]: Analyzing trace with hash -1813146598, now seen corresponding path program 198 times [2021-05-21 20:00:28,229 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:00:28,229 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1972365800] [2021-05-21 20:00:28,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:00:28,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:00:28,274 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:00:28,274 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:00:28,274 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1972365800] [2021-05-21 20:00:28,275 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1972365800] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:00:28,275 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:00:28,275 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:00:28,275 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197464874] [2021-05-21 20:00:28,275 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-21 20:00:28,275 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:00:28,275 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-21 20:00:28,275 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-05-21 20:00:28,275 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) [2021-05-21 20:00:28,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:00:28,404 INFO L93 Difference]: Finished difference Result 1611 states and 4507 transitions. [2021-05-21 20:00:28,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-21 20:00:28,405 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 [2021-05-21 20:00:28,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:00:28,406 INFO L225 Difference]: With dead ends: 1611 [2021-05-21 20:00:28,406 INFO L226 Difference]: Without dead ends: 1524 [2021-05-21 20:00:28,407 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 38.0ms TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-05-21 20:00:28,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1524 states. [2021-05-21 20:00:28,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1524 to 1406. [2021-05-21 20:00:28,420 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) [2021-05-21 20:00:28,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1406 states to 1406 states and 3972 transitions. [2021-05-21 20:00:28,422 INFO L78 Accepts]: Start accepts. Automaton has 1406 states and 3972 transitions. Word has length 26 [2021-05-21 20:00:28,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:00:28,422 INFO L482 AbstractCegarLoop]: Abstraction has 1406 states and 3972 transitions. [2021-05-21 20:00:28,422 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) [2021-05-21 20:00:28,422 INFO L276 IsEmpty]: Start isEmpty. Operand 1406 states and 3972 transitions. [2021-05-21 20:00:28,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 20:00:28,424 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:00:28,424 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:00:28,424 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable199 [2021-05-21 20:00:28,424 INFO L430 AbstractCegarLoop]: === Iteration 201 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 20:00:28,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:00:28,424 INFO L82 PathProgramCache]: Analyzing trace with hash 1741697498, now seen corresponding path program 199 times [2021-05-21 20:00:28,424 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:00:28,424 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [405614463] [2021-05-21 20:00:28,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:00:28,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:00:28,478 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:00:28,478 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:00:28,478 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [405614463] [2021-05-21 20:00:28,478 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [405614463] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:00:28,478 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:00:28,479 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-21 20:00:28,479 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1720165867] [2021-05-21 20:00:28,479 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:00:28,479 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:00:28,479 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:00:28,479 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:00:28,479 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) [2021-05-21 20:00:28,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:00:28,642 INFO L93 Difference]: Finished difference Result 1550 states and 4346 transitions. [2021-05-21 20:00:28,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:00:28,643 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-05-21 20:00:28,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:00:28,644 INFO L225 Difference]: With dead ends: 1550 [2021-05-21 20:00:28,644 INFO L226 Difference]: Without dead ends: 1462 [2021-05-21 20:00:28,644 INFO L777 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 [2021-05-21 20:00:28,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1462 states. [2021-05-21 20:00:28,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1462 to 1408. [2021-05-21 20:00:28,656 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) [2021-05-21 20:00:28,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1408 states to 1408 states and 3979 transitions. [2021-05-21 20:00:28,658 INFO L78 Accepts]: Start accepts. Automaton has 1408 states and 3979 transitions. Word has length 26 [2021-05-21 20:00:28,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:00:28,658 INFO L482 AbstractCegarLoop]: Abstraction has 1408 states and 3979 transitions. [2021-05-21 20:00:28,658 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:00:28,658 INFO L276 IsEmpty]: Start isEmpty. Operand 1408 states and 3979 transitions. [2021-05-21 20:00:28,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 20:00:28,659 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:00:28,659 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:00:28,659 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable200 [2021-05-21 20:00:28,659 INFO L430 AbstractCegarLoop]: === Iteration 202 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 20:00:28,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:00:28,660 INFO L82 PathProgramCache]: Analyzing trace with hash 1029629656, now seen corresponding path program 200 times [2021-05-21 20:00:28,660 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:00:28,660 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1943882597] [2021-05-21 20:00:28,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:00:28,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:00:28,711 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:00:28,711 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:00:28,711 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1943882597] [2021-05-21 20:00:28,711 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1943882597] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:00:28,711 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:00:28,711 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-21 20:00:28,711 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [56780113] [2021-05-21 20:00:28,711 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:00:28,711 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:00:28,711 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:00:28,711 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:00:28,711 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) [2021-05-21 20:00:28,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:00:28,883 INFO L93 Difference]: Finished difference Result 1554 states and 4338 transitions. [2021-05-21 20:00:28,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:00:28,883 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-05-21 20:00:28,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:00:28,885 INFO L225 Difference]: With dead ends: 1554 [2021-05-21 20:00:28,885 INFO L226 Difference]: Without dead ends: 1468 [2021-05-21 20:00:28,885 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 43.4ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:00:28,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1468 states. [2021-05-21 20:00:28,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1468 to 1407. [2021-05-21 20:00:28,897 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) [2021-05-21 20:00:28,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1407 states to 1407 states and 3972 transitions. [2021-05-21 20:00:28,898 INFO L78 Accepts]: Start accepts. Automaton has 1407 states and 3972 transitions. Word has length 26 [2021-05-21 20:00:28,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:00:28,898 INFO L482 AbstractCegarLoop]: Abstraction has 1407 states and 3972 transitions. [2021-05-21 20:00:28,899 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) [2021-05-21 20:00:28,899 INFO L276 IsEmpty]: Start isEmpty. Operand 1407 states and 3972 transitions. [2021-05-21 20:00:28,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 20:00:28,900 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:00:28,900 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:00:28,900 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable201 [2021-05-21 20:00:28,900 INFO L430 AbstractCegarLoop]: === Iteration 203 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 20:00:28,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:00:28,901 INFO L82 PathProgramCache]: Analyzing trace with hash 349552952, now seen corresponding path program 201 times [2021-05-21 20:00:28,901 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:00:28,901 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1332997609] [2021-05-21 20:00:28,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:00:28,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:00:28,960 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:00:28,961 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:00:28,961 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1332997609] [2021-05-21 20:00:28,961 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1332997609] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:00:28,961 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:00:28,961 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-21 20:00:28,961 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2102030317] [2021-05-21 20:00:28,961 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:00:28,961 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:00:28,961 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:00:28,961 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:00:28,961 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) [2021-05-21 20:00:29,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:00:29,120 INFO L93 Difference]: Finished difference Result 1620 states and 4536 transitions. [2021-05-21 20:00:29,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:00:29,120 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-05-21 20:00:29,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:00:29,122 INFO L225 Difference]: With dead ends: 1620 [2021-05-21 20:00:29,122 INFO L226 Difference]: Without dead ends: 1523 [2021-05-21 20:00:29,122 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 52.9ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:00:29,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1523 states. [2021-05-21 20:00:29,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1523 to 1419. [2021-05-21 20:00:29,134 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) [2021-05-21 20:00:29,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1419 states to 1419 states and 4001 transitions. [2021-05-21 20:00:29,136 INFO L78 Accepts]: Start accepts. Automaton has 1419 states and 4001 transitions. Word has length 26 [2021-05-21 20:00:29,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:00:29,136 INFO L482 AbstractCegarLoop]: Abstraction has 1419 states and 4001 transitions. [2021-05-21 20:00:29,136 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) [2021-05-21 20:00:29,136 INFO L276 IsEmpty]: Start isEmpty. Operand 1419 states and 4001 transitions. [2021-05-21 20:00:29,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 20:00:29,137 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:00:29,137 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:00:29,137 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable202 [2021-05-21 20:00:29,137 INFO L430 AbstractCegarLoop]: === Iteration 204 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 20:00:29,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:00:29,137 INFO L82 PathProgramCache]: Analyzing trace with hash 939870006, now seen corresponding path program 202 times [2021-05-21 20:00:29,137 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:00:29,138 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1841276892] [2021-05-21 20:00:29,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:00:29,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:00:29,193 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:00:29,193 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:00:29,193 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1841276892] [2021-05-21 20:00:29,193 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1841276892] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:00:29,194 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:00:29,194 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-21 20:00:29,194 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1126829847] [2021-05-21 20:00:29,194 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:00:29,194 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:00:29,194 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:00:29,194 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:00:29,194 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) [2021-05-21 20:00:29,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:00:29,352 INFO L93 Difference]: Finished difference Result 1652 states and 4605 transitions. [2021-05-21 20:00:29,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:00:29,352 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-05-21 20:00:29,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:00:29,354 INFO L225 Difference]: With dead ends: 1652 [2021-05-21 20:00:29,354 INFO L226 Difference]: Without dead ends: 1563 [2021-05-21 20:00:29,354 INFO L777 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 [2021-05-21 20:00:29,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1563 states. [2021-05-21 20:00:29,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1563 to 1418. [2021-05-21 20:00:29,366 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) [2021-05-21 20:00:29,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1418 states to 1418 states and 4000 transitions. [2021-05-21 20:00:29,368 INFO L78 Accepts]: Start accepts. Automaton has 1418 states and 4000 transitions. Word has length 26 [2021-05-21 20:00:29,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:00:29,368 INFO L482 AbstractCegarLoop]: Abstraction has 1418 states and 4000 transitions. [2021-05-21 20:00:29,368 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:00:29,368 INFO L276 IsEmpty]: Start isEmpty. Operand 1418 states and 4000 transitions. [2021-05-21 20:00:29,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 20:00:29,369 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:00:29,369 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:00:29,369 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable203 [2021-05-21 20:00:29,369 INFO L430 AbstractCegarLoop]: === Iteration 205 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 20:00:29,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:00:29,370 INFO L82 PathProgramCache]: Analyzing trace with hash -2043486036, now seen corresponding path program 203 times [2021-05-21 20:00:29,370 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:00:29,370 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [392806311] [2021-05-21 20:00:29,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:00:29,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:00:29,415 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:00:29,415 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:00:29,415 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [392806311] [2021-05-21 20:00:29,415 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [392806311] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:00:29,415 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:00:29,415 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:00:29,415 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1619083658] [2021-05-21 20:00:29,415 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-21 20:00:29,415 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:00:29,416 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-21 20:00:29,416 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-05-21 20:00:29,416 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) [2021-05-21 20:00:29,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:00:29,546 INFO L93 Difference]: Finished difference Result 1692 states and 4710 transitions. [2021-05-21 20:00:29,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-21 20:00:29,546 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 [2021-05-21 20:00:29,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:00:29,548 INFO L225 Difference]: With dead ends: 1692 [2021-05-21 20:00:29,548 INFO L226 Difference]: Without dead ends: 1504 [2021-05-21 20:00:29,548 INFO L777 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 [2021-05-21 20:00:29,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1504 states. [2021-05-21 20:00:29,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1504 to 1400. [2021-05-21 20:00:29,560 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) [2021-05-21 20:00:29,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1400 states to 1400 states and 3920 transitions. [2021-05-21 20:00:29,561 INFO L78 Accepts]: Start accepts. Automaton has 1400 states and 3920 transitions. Word has length 26 [2021-05-21 20:00:29,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:00:29,562 INFO L482 AbstractCegarLoop]: Abstraction has 1400 states and 3920 transitions. [2021-05-21 20:00:29,562 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) [2021-05-21 20:00:29,562 INFO L276 IsEmpty]: Start isEmpty. Operand 1400 states and 3920 transitions. [2021-05-21 20:00:29,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 20:00:29,563 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:00:29,563 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:00:29,563 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable204 [2021-05-21 20:00:29,563 INFO L430 AbstractCegarLoop]: === Iteration 206 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 20:00:29,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:00:29,563 INFO L82 PathProgramCache]: Analyzing trace with hash 672049614, now seen corresponding path program 204 times [2021-05-21 20:00:29,563 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:00:29,563 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [995099184] [2021-05-21 20:00:29,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:00:29,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:00:29,618 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:00:29,618 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:00:29,618 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [995099184] [2021-05-21 20:00:29,618 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [995099184] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:00:29,618 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:00:29,618 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-21 20:00:29,619 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1693348683] [2021-05-21 20:00:29,619 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:00:29,619 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:00:29,619 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:00:29,619 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:00:29,619 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) [2021-05-21 20:00:29,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:00:29,779 INFO L93 Difference]: Finished difference Result 1597 states and 4423 transitions. [2021-05-21 20:00:29,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:00:29,779 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 [2021-05-21 20:00:29,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:00:29,781 INFO L225 Difference]: With dead ends: 1597 [2021-05-21 20:00:29,781 INFO L226 Difference]: Without dead ends: 1470 [2021-05-21 20:00:29,781 INFO L777 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 [2021-05-21 20:00:29,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1470 states. [2021-05-21 20:00:29,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1470 to 1368. [2021-05-21 20:00:29,793 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) [2021-05-21 20:00:29,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1368 states to 1368 states and 3839 transitions. [2021-05-21 20:00:29,795 INFO L78 Accepts]: Start accepts. Automaton has 1368 states and 3839 transitions. Word has length 26 [2021-05-21 20:00:29,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:00:29,795 INFO L482 AbstractCegarLoop]: Abstraction has 1368 states and 3839 transitions. [2021-05-21 20:00:29,795 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:00:29,795 INFO L276 IsEmpty]: Start isEmpty. Operand 1368 states and 3839 transitions. [2021-05-21 20:00:29,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 20:00:29,797 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:00:29,797 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:00:29,797 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable205 [2021-05-21 20:00:29,797 INFO L430 AbstractCegarLoop]: === Iteration 207 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 20:00:29,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:00:29,797 INFO L82 PathProgramCache]: Analyzing trace with hash 680919408, now seen corresponding path program 205 times [2021-05-21 20:00:29,797 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:00:29,797 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1935921720] [2021-05-21 20:00:29,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:00:29,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:00:29,853 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:00:29,854 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:00:29,854 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1935921720] [2021-05-21 20:00:29,854 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1935921720] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:00:29,854 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:00:29,854 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-21 20:00:29,854 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638075382] [2021-05-21 20:00:29,854 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:00:29,854 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:00:29,854 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:00:29,854 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:00:29,854 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) [2021-05-21 20:00:30,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:00:30,016 INFO L93 Difference]: Finished difference Result 1512 states and 4214 transitions. [2021-05-21 20:00:30,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:00:30,016 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 [2021-05-21 20:00:30,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:00:30,018 INFO L225 Difference]: With dead ends: 1512 [2021-05-21 20:00:30,018 INFO L226 Difference]: Without dead ends: 1424 [2021-05-21 20:00:30,018 INFO L777 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 [2021-05-21 20:00:30,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1424 states. [2021-05-21 20:00:30,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1424 to 1371. [2021-05-21 20:00:30,030 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) [2021-05-21 20:00:30,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1371 states to 1371 states and 3847 transitions. [2021-05-21 20:00:30,031 INFO L78 Accepts]: Start accepts. Automaton has 1371 states and 3847 transitions. Word has length 26 [2021-05-21 20:00:30,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:00:30,031 INFO L482 AbstractCegarLoop]: Abstraction has 1371 states and 3847 transitions. [2021-05-21 20:00:30,031 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:00:30,031 INFO L276 IsEmpty]: Start isEmpty. Operand 1371 states and 3847 transitions. [2021-05-21 20:00:30,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 20:00:30,033 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:00:30,033 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:00:30,033 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable206 [2021-05-21 20:00:30,033 INFO L430 AbstractCegarLoop]: === Iteration 208 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 20:00:30,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:00:30,033 INFO L82 PathProgramCache]: Analyzing trace with hash -31148434, now seen corresponding path program 206 times [2021-05-21 20:00:30,033 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:00:30,033 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [237332563] [2021-05-21 20:00:30,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:00:30,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:00:30,091 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:00:30,091 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:00:30,091 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [237332563] [2021-05-21 20:00:30,091 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [237332563] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:00:30,091 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:00:30,091 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-21 20:00:30,091 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [792469991] [2021-05-21 20:00:30,091 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:00:30,091 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:00:30,091 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:00:30,091 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:00:30,092 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) [2021-05-21 20:00:30,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:00:30,247 INFO L93 Difference]: Finished difference Result 1563 states and 4321 transitions. [2021-05-21 20:00:30,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:00:30,247 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-05-21 20:00:30,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:00:30,248 INFO L225 Difference]: With dead ends: 1563 [2021-05-21 20:00:30,248 INFO L226 Difference]: Without dead ends: 1477 [2021-05-21 20:00:30,249 INFO L777 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 [2021-05-21 20:00:30,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1477 states. [2021-05-21 20:00:30,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1477 to 1369. [2021-05-21 20:00:30,260 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) [2021-05-21 20:00:30,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1369 states to 1369 states and 3839 transitions. [2021-05-21 20:00:30,262 INFO L78 Accepts]: Start accepts. Automaton has 1369 states and 3839 transitions. Word has length 26 [2021-05-21 20:00:30,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:00:30,262 INFO L482 AbstractCegarLoop]: Abstraction has 1369 states and 3839 transitions. [2021-05-21 20:00:30,262 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) [2021-05-21 20:00:30,262 INFO L276 IsEmpty]: Start isEmpty. Operand 1369 states and 3839 transitions. [2021-05-21 20:00:30,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 20:00:30,263 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:00:30,263 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:00:30,263 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable207 [2021-05-21 20:00:30,264 INFO L430 AbstractCegarLoop]: === Iteration 209 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 20:00:30,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:00:30,264 INFO L82 PathProgramCache]: Analyzing trace with hash -711225138, now seen corresponding path program 207 times [2021-05-21 20:00:30,264 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:00:30,264 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [559248838] [2021-05-21 20:00:30,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:00:30,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:00:30,317 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:00:30,317 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:00:30,317 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [559248838] [2021-05-21 20:00:30,317 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [559248838] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:00:30,317 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:00:30,317 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-21 20:00:30,317 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1343252640] [2021-05-21 20:00:30,318 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:00:30,318 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:00:30,318 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:00:30,318 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:00:30,318 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) [2021-05-21 20:00:30,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:00:30,471 INFO L93 Difference]: Finished difference Result 1575 states and 4380 transitions. [2021-05-21 20:00:30,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:00:30,471 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-05-21 20:00:30,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:00:30,472 INFO L225 Difference]: With dead ends: 1575 [2021-05-21 20:00:30,473 INFO L226 Difference]: Without dead ends: 1464 [2021-05-21 20:00:30,473 INFO L777 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 [2021-05-21 20:00:30,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1464 states. [2021-05-21 20:00:30,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1464 to 1349. [2021-05-21 20:00:30,484 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) [2021-05-21 20:00:30,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1349 states to 1349 states and 3784 transitions. [2021-05-21 20:00:30,486 INFO L78 Accepts]: Start accepts. Automaton has 1349 states and 3784 transitions. Word has length 26 [2021-05-21 20:00:30,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:00:30,486 INFO L482 AbstractCegarLoop]: Abstraction has 1349 states and 3784 transitions. [2021-05-21 20:00:30,486 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) [2021-05-21 20:00:30,486 INFO L276 IsEmpty]: Start isEmpty. Operand 1349 states and 3784 transitions. [2021-05-21 20:00:30,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 20:00:30,487 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:00:30,487 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:00:30,487 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable208 [2021-05-21 20:00:30,487 INFO L430 AbstractCegarLoop]: === Iteration 210 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 20:00:30,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:00:30,487 INFO L82 PathProgramCache]: Analyzing trace with hash 40111740, now seen corresponding path program 208 times [2021-05-21 20:00:30,487 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:00:30,487 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1137634836] [2021-05-21 20:00:30,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:00:30,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:00:30,533 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:00:30,533 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:00:30,533 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1137634836] [2021-05-21 20:00:30,533 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1137634836] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:00:30,533 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:00:30,533 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:00:30,533 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [374803178] [2021-05-21 20:00:30,533 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-21 20:00:30,533 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:00:30,533 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-21 20:00:30,533 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-05-21 20:00:30,533 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) [2021-05-21 20:00:30,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:00:30,669 INFO L93 Difference]: Finished difference Result 1533 states and 4263 transitions. [2021-05-21 20:00:30,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-21 20:00:30,670 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 [2021-05-21 20:00:30,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:00:30,671 INFO L225 Difference]: With dead ends: 1533 [2021-05-21 20:00:30,671 INFO L226 Difference]: Without dead ends: 1448 [2021-05-21 20:00:30,671 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 38.4ms TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-05-21 20:00:30,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1448 states. [2021-05-21 20:00:30,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1448 to 1355. [2021-05-21 20:00:30,684 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) [2021-05-21 20:00:30,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1355 states to 1355 states and 3794 transitions. [2021-05-21 20:00:30,686 INFO L78 Accepts]: Start accepts. Automaton has 1355 states and 3794 transitions. Word has length 26 [2021-05-21 20:00:30,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:00:30,686 INFO L482 AbstractCegarLoop]: Abstraction has 1355 states and 3794 transitions. [2021-05-21 20:00:30,686 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) [2021-05-21 20:00:30,686 INFO L276 IsEmpty]: Start isEmpty. Operand 1355 states and 3794 transitions. [2021-05-21 20:00:30,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 20:00:30,687 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:00:30,687 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:00:30,687 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable209 [2021-05-21 20:00:30,687 INFO L430 AbstractCegarLoop]: === Iteration 211 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 20:00:30,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:00:30,688 INFO L82 PathProgramCache]: Analyzing trace with hash 909556348, now seen corresponding path program 209 times [2021-05-21 20:00:30,688 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:00:30,688 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [260132629] [2021-05-21 20:00:30,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:00:30,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:00:30,734 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:00:30,734 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:00:30,734 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [260132629] [2021-05-21 20:00:30,734 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [260132629] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:00:30,734 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:00:30,734 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:00:30,734 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [435123569] [2021-05-21 20:00:30,734 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-21 20:00:30,734 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:00:30,735 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-21 20:00:30,735 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-05-21 20:00:30,735 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) [2021-05-21 20:00:30,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:00:30,862 INFO L93 Difference]: Finished difference Result 1554 states and 4325 transitions. [2021-05-21 20:00:30,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-21 20:00:30,862 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 [2021-05-21 20:00:30,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:00:30,863 INFO L225 Difference]: With dead ends: 1554 [2021-05-21 20:00:30,863 INFO L226 Difference]: Without dead ends: 1459 [2021-05-21 20:00:30,864 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 38.6ms TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-05-21 20:00:30,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1459 states. [2021-05-21 20:00:30,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1459 to 1367. [2021-05-21 20:00:30,875 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) [2021-05-21 20:00:30,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1367 states to 1367 states and 3823 transitions. [2021-05-21 20:00:30,877 INFO L78 Accepts]: Start accepts. Automaton has 1367 states and 3823 transitions. Word has length 26 [2021-05-21 20:00:30,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:00:30,877 INFO L482 AbstractCegarLoop]: Abstraction has 1367 states and 3823 transitions. [2021-05-21 20:00:30,877 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) [2021-05-21 20:00:30,877 INFO L276 IsEmpty]: Start isEmpty. Operand 1367 states and 3823 transitions. [2021-05-21 20:00:30,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 20:00:30,878 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:00:30,878 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:00:30,878 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable210 [2021-05-21 20:00:30,878 INFO L430 AbstractCegarLoop]: === Iteration 212 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 20:00:30,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:00:30,879 INFO L82 PathProgramCache]: Analyzing trace with hash -559154882, now seen corresponding path program 210 times [2021-05-21 20:00:30,879 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:00:30,879 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1645697011] [2021-05-21 20:00:30,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:00:30,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:00:30,950 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:00:30,950 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:00:30,950 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1645697011] [2021-05-21 20:00:30,950 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1645697011] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:00:30,950 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:00:30,950 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-21 20:00:30,950 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [228753272] [2021-05-21 20:00:30,950 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:00:30,950 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:00:30,950 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:00:30,950 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:00:30,950 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) [2021-05-21 20:00:31,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:00:31,147 INFO L93 Difference]: Finished difference Result 1615 states and 4457 transitions. [2021-05-21 20:00:31,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:00:31,148 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 [2021-05-21 20:00:31,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:00:31,149 INFO L225 Difference]: With dead ends: 1615 [2021-05-21 20:00:31,149 INFO L226 Difference]: Without dead ends: 1530 [2021-05-21 20:00:31,149 INFO L777 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 [2021-05-21 20:00:31,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1530 states. [2021-05-21 20:00:31,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1530 to 1391. [2021-05-21 20:00:31,161 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) [2021-05-21 20:00:31,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1391 states to 1391 states and 3889 transitions. [2021-05-21 20:00:31,163 INFO L78 Accepts]: Start accepts. Automaton has 1391 states and 3889 transitions. Word has length 26 [2021-05-21 20:00:31,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:00:31,163 INFO L482 AbstractCegarLoop]: Abstraction has 1391 states and 3889 transitions. [2021-05-21 20:00:31,163 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:00:31,163 INFO L276 IsEmpty]: Start isEmpty. Operand 1391 states and 3889 transitions. [2021-05-21 20:00:31,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 20:00:31,165 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:00:31,165 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:00:31,165 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable211 [2021-05-21 20:00:31,165 INFO L430 AbstractCegarLoop]: === Iteration 213 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 20:00:31,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:00:31,165 INFO L82 PathProgramCache]: Analyzing trace with hash -1132552158, now seen corresponding path program 211 times [2021-05-21 20:00:31,165 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:00:31,165 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2001469627] [2021-05-21 20:00:31,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:00:31,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:00:31,221 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:00:31,222 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:00:31,222 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2001469627] [2021-05-21 20:00:31,222 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2001469627] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:00:31,222 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:00:31,222 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-21 20:00:31,222 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [186680142] [2021-05-21 20:00:31,222 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:00:31,222 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:00:31,222 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:00:31,222 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:00:31,222 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) [2021-05-21 20:00:31,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:00:31,380 INFO L93 Difference]: Finished difference Result 1549 states and 4282 transitions. [2021-05-21 20:00:31,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:00:31,380 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-05-21 20:00:31,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:00:31,381 INFO L225 Difference]: With dead ends: 1549 [2021-05-21 20:00:31,381 INFO L226 Difference]: Without dead ends: 1466 [2021-05-21 20:00:31,382 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 45.9ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:00:31,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1466 states. [2021-05-21 20:00:31,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1466 to 1397. [2021-05-21 20:00:31,393 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) [2021-05-21 20:00:31,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1397 states to 1397 states and 3897 transitions. [2021-05-21 20:00:31,395 INFO L78 Accepts]: Start accepts. Automaton has 1397 states and 3897 transitions. Word has length 26 [2021-05-21 20:00:31,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:00:31,395 INFO L482 AbstractCegarLoop]: Abstraction has 1397 states and 3897 transitions. [2021-05-21 20:00:31,395 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:00:31,395 INFO L276 IsEmpty]: Start isEmpty. Operand 1397 states and 3897 transitions. [2021-05-21 20:00:31,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 20:00:31,396 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:00:31,396 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:00:31,396 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable212 [2021-05-21 20:00:31,396 INFO L430 AbstractCegarLoop]: === Iteration 214 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 20:00:31,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:00:31,396 INFO L82 PathProgramCache]: Analyzing trace with hash -546001310, now seen corresponding path program 212 times [2021-05-21 20:00:31,396 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:00:31,396 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1820942801] [2021-05-21 20:00:31,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:00:31,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:00:31,449 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:00:31,450 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:00:31,450 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1820942801] [2021-05-21 20:00:31,450 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1820942801] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:00:31,450 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:00:31,450 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-21 20:00:31,450 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [992808083] [2021-05-21 20:00:31,450 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:00:31,450 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:00:31,450 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:00:31,450 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:00:31,450 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) [2021-05-21 20:00:31,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:00:31,610 INFO L93 Difference]: Finished difference Result 1624 states and 4492 transitions. [2021-05-21 20:00:31,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:00:31,610 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-05-21 20:00:31,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:00:31,611 INFO L225 Difference]: With dead ends: 1624 [2021-05-21 20:00:31,611 INFO L226 Difference]: Without dead ends: 1536 [2021-05-21 20:00:31,612 INFO L777 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 [2021-05-21 20:00:31,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1536 states. [2021-05-21 20:00:31,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1536 to 1423. [2021-05-21 20:00:31,623 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) [2021-05-21 20:00:31,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1423 states to 1423 states and 3973 transitions. [2021-05-21 20:00:31,625 INFO L78 Accepts]: Start accepts. Automaton has 1423 states and 3973 transitions. Word has length 26 [2021-05-21 20:00:31,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:00:31,625 INFO L482 AbstractCegarLoop]: Abstraction has 1423 states and 3973 transitions. [2021-05-21 20:00:31,625 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:00:31,625 INFO L276 IsEmpty]: Start isEmpty. Operand 1423 states and 3973 transitions. [2021-05-21 20:00:31,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 20:00:31,626 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:00:31,627 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:00:31,627 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable213 [2021-05-21 20:00:31,627 INFO L430 AbstractCegarLoop]: === Iteration 215 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 20:00:31,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:00:31,627 INFO L82 PathProgramCache]: Analyzing trace with hash -1258069152, now seen corresponding path program 213 times [2021-05-21 20:00:31,627 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:00:31,627 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [156826198] [2021-05-21 20:00:31,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:00:31,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:00:31,681 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:00:31,681 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:00:31,681 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [156826198] [2021-05-21 20:00:31,681 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [156826198] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:00:31,681 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:00:31,681 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-21 20:00:31,681 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1073354384] [2021-05-21 20:00:31,682 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:00:31,682 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:00:31,682 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:00:31,682 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:00:31,682 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) [2021-05-21 20:00:31,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:00:31,844 INFO L93 Difference]: Finished difference Result 1572 states and 4345 transitions. [2021-05-21 20:00:31,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:00:31,844 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-05-21 20:00:31,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:00:31,845 INFO L225 Difference]: With dead ends: 1572 [2021-05-21 20:00:31,845 INFO L226 Difference]: Without dead ends: 1484 [2021-05-21 20:00:31,846 INFO L777 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 [2021-05-21 20:00:31,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1484 states. [2021-05-21 20:00:31,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1484 to 1415. [2021-05-21 20:00:31,857 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) [2021-05-21 20:00:31,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1415 states to 1415 states and 3958 transitions. [2021-05-21 20:00:31,859 INFO L78 Accepts]: Start accepts. Automaton has 1415 states and 3958 transitions. Word has length 26 [2021-05-21 20:00:31,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:00:31,859 INFO L482 AbstractCegarLoop]: Abstraction has 1415 states and 3958 transitions. [2021-05-21 20:00:31,859 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:00:31,859 INFO L276 IsEmpty]: Start isEmpty. Operand 1415 states and 3958 transitions. [2021-05-21 20:00:31,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 20:00:31,860 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:00:31,860 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:00:31,861 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable214 [2021-05-21 20:00:31,861 INFO L430 AbstractCegarLoop]: === Iteration 216 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 20:00:31,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:00:31,861 INFO L82 PathProgramCache]: Analyzing trace with hash -92316360, now seen corresponding path program 214 times [2021-05-21 20:00:31,861 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:00:31,861 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [108825141] [2021-05-21 20:00:31,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:00:31,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:00:31,914 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:00:31,914 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:00:31,914 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [108825141] [2021-05-21 20:00:31,914 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [108825141] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:00:31,914 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:00:31,914 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-21 20:00:31,914 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [499343873] [2021-05-21 20:00:31,914 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:00:31,914 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:00:31,914 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:00:31,915 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:00:31,915 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) [2021-05-21 20:00:32,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:00:32,074 INFO L93 Difference]: Finished difference Result 1653 states and 4558 transitions. [2021-05-21 20:00:32,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:00:32,074 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-05-21 20:00:32,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:00:32,075 INFO L225 Difference]: With dead ends: 1653 [2021-05-21 20:00:32,075 INFO L226 Difference]: Without dead ends: 1514 [2021-05-21 20:00:32,076 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 45.8ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:00:32,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1514 states. [2021-05-21 20:00:32,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1514 to 1381. [2021-05-21 20:00:32,087 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) [2021-05-21 20:00:32,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1381 states to 1381 states and 3860 transitions. [2021-05-21 20:00:32,089 INFO L78 Accepts]: Start accepts. Automaton has 1381 states and 3860 transitions. Word has length 26 [2021-05-21 20:00:32,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:00:32,089 INFO L482 AbstractCegarLoop]: Abstraction has 1381 states and 3860 transitions. [2021-05-21 20:00:32,089 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:00:32,089 INFO L276 IsEmpty]: Start isEmpty. Operand 1381 states and 3860 transitions. [2021-05-21 20:00:32,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 20:00:32,090 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:00:32,090 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:00:32,090 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable215 [2021-05-21 20:00:32,090 INFO L430 AbstractCegarLoop]: === Iteration 217 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 20:00:32,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:00:32,090 INFO L82 PathProgramCache]: Analyzing trace with hash -1103631634, now seen corresponding path program 215 times [2021-05-21 20:00:32,091 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:00:32,091 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [181475740] [2021-05-21 20:00:32,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:00:32,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:00:32,144 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:00:32,145 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:00:32,145 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [181475740] [2021-05-21 20:00:32,145 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [181475740] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:00:32,145 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:00:32,145 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-21 20:00:32,145 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1506083340] [2021-05-21 20:00:32,145 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:00:32,145 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:00:32,145 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:00:32,145 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:00:32,145 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) [2021-05-21 20:00:32,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:00:32,305 INFO L93 Difference]: Finished difference Result 1627 states and 4481 transitions. [2021-05-21 20:00:32,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:00:32,305 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-05-21 20:00:32,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:00:32,307 INFO L225 Difference]: With dead ends: 1627 [2021-05-21 20:00:32,307 INFO L226 Difference]: Without dead ends: 1465 [2021-05-21 20:00:32,307 INFO L777 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 [2021-05-21 20:00:32,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1465 states. [2021-05-21 20:00:32,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1465 to 1360. [2021-05-21 20:00:32,319 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) [2021-05-21 20:00:32,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1360 states to 1360 states and 3804 transitions. [2021-05-21 20:00:32,320 INFO L78 Accepts]: Start accepts. Automaton has 1360 states and 3804 transitions. Word has length 26 [2021-05-21 20:00:32,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:00:32,321 INFO L482 AbstractCegarLoop]: Abstraction has 1360 states and 3804 transitions. [2021-05-21 20:00:32,321 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:00:32,321 INFO L276 IsEmpty]: Start isEmpty. Operand 1360 states and 3804 transitions. [2021-05-21 20:00:32,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 20:00:32,322 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:00:32,322 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:00:32,322 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable216 [2021-05-21 20:00:32,322 INFO L430 AbstractCegarLoop]: === Iteration 218 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 20:00:32,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:00:32,322 INFO L82 PathProgramCache]: Analyzing trace with hash -1441326566, now seen corresponding path program 216 times [2021-05-21 20:00:32,322 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:00:32,322 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1171938763] [2021-05-21 20:00:32,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:00:32,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:00:32,386 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:00:32,386 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:00:32,386 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1171938763] [2021-05-21 20:00:32,387 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1171938763] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:00:32,387 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:00:32,387 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-21 20:00:32,387 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1070250373] [2021-05-21 20:00:32,387 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:00:32,387 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:00:32,387 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:00:32,387 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:00:32,387 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) [2021-05-21 20:00:32,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:00:32,553 INFO L93 Difference]: Finished difference Result 1494 states and 4137 transitions. [2021-05-21 20:00:32,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:00:32,554 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-05-21 20:00:32,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:00:32,555 INFO L225 Difference]: With dead ends: 1494 [2021-05-21 20:00:32,555 INFO L226 Difference]: Without dead ends: 1409 [2021-05-21 20:00:32,555 INFO L777 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 [2021-05-21 20:00:32,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1409 states. [2021-05-21 20:00:32,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1409 to 1353. [2021-05-21 20:00:32,567 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) [2021-05-21 20:00:32,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1353 states to 1353 states and 3778 transitions. [2021-05-21 20:00:32,568 INFO L78 Accepts]: Start accepts. Automaton has 1353 states and 3778 transitions. Word has length 26 [2021-05-21 20:00:32,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:00:32,568 INFO L482 AbstractCegarLoop]: Abstraction has 1353 states and 3778 transitions. [2021-05-21 20:00:32,568 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) [2021-05-21 20:00:32,568 INFO L276 IsEmpty]: Start isEmpty. Operand 1353 states and 3778 transitions. [2021-05-21 20:00:32,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 20:00:32,569 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:00:32,569 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:00:32,570 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable217 [2021-05-21 20:00:32,570 INFO L430 AbstractCegarLoop]: === Iteration 219 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 20:00:32,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:00:32,570 INFO L82 PathProgramCache]: Analyzing trace with hash -571881958, now seen corresponding path program 217 times [2021-05-21 20:00:32,570 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:00:32,570 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1425996699] [2021-05-21 20:00:32,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:00:32,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:00:32,623 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:00:32,623 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:00:32,623 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1425996699] [2021-05-21 20:00:32,623 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1425996699] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:00:32,623 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:00:32,623 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-21 20:00:32,623 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [687991487] [2021-05-21 20:00:32,623 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:00:32,623 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:00:32,624 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:00:32,624 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:00:32,624 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) [2021-05-21 20:00:32,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:00:32,781 INFO L93 Difference]: Finished difference Result 1511 states and 4172 transitions. [2021-05-21 20:00:32,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:00:32,781 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-05-21 20:00:32,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:00:32,783 INFO L225 Difference]: With dead ends: 1511 [2021-05-21 20:00:32,783 INFO L226 Difference]: Without dead ends: 1416 [2021-05-21 20:00:32,783 INFO L777 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 [2021-05-21 20:00:32,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1416 states. [2021-05-21 20:00:32,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1416 to 1354. [2021-05-21 20:00:32,794 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) [2021-05-21 20:00:32,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1354 states to 1354 states and 3779 transitions. [2021-05-21 20:00:32,796 INFO L78 Accepts]: Start accepts. Automaton has 1354 states and 3779 transitions. Word has length 26 [2021-05-21 20:00:32,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:00:32,796 INFO L482 AbstractCegarLoop]: Abstraction has 1354 states and 3779 transitions. [2021-05-21 20:00:32,796 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:00:32,796 INFO L276 IsEmpty]: Start isEmpty. Operand 1354 states and 3779 transitions. [2021-05-21 20:00:32,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 20:00:32,797 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:00:32,797 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:00:32,797 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable218 [2021-05-21 20:00:32,797 INFO L430 AbstractCegarLoop]: === Iteration 220 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 20:00:32,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:00:32,798 INFO L82 PathProgramCache]: Analyzing trace with hash -2040593188, now seen corresponding path program 218 times [2021-05-21 20:00:32,798 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:00:32,798 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [164769513] [2021-05-21 20:00:32,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:00:32,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:00:32,855 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:00:32,855 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:00:32,855 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [164769513] [2021-05-21 20:00:32,855 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [164769513] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:00:32,855 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:00:32,855 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-21 20:00:32,855 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1842803904] [2021-05-21 20:00:32,855 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:00:32,855 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:00:32,855 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:00:32,855 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:00:32,855 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) [2021-05-21 20:00:33,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:00:33,015 INFO L93 Difference]: Finished difference Result 1525 states and 4210 transitions. [2021-05-21 20:00:33,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:00:33,015 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-05-21 20:00:33,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:00:33,017 INFO L225 Difference]: With dead ends: 1525 [2021-05-21 20:00:33,017 INFO L226 Difference]: Without dead ends: 1440 [2021-05-21 20:00:33,017 INFO L777 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 [2021-05-21 20:00:33,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1440 states. [2021-05-21 20:00:33,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1440 to 1356. [2021-05-21 20:00:33,028 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) [2021-05-21 20:00:33,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1356 states to 1356 states and 3787 transitions. [2021-05-21 20:00:33,030 INFO L78 Accepts]: Start accepts. Automaton has 1356 states and 3787 transitions. Word has length 26 [2021-05-21 20:00:33,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:00:33,030 INFO L482 AbstractCegarLoop]: Abstraction has 1356 states and 3787 transitions. [2021-05-21 20:00:33,030 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:00:33,030 INFO L276 IsEmpty]: Start isEmpty. Operand 1356 states and 3787 transitions. [2021-05-21 20:00:33,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 20:00:33,031 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:00:33,031 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:00:33,031 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable219 [2021-05-21 20:00:33,031 INFO L430 AbstractCegarLoop]: === Iteration 221 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 20:00:33,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:00:33,031 INFO L82 PathProgramCache]: Analyzing trace with hash 1680976832, now seen corresponding path program 219 times [2021-05-21 20:00:33,031 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:00:33,031 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1649509819] [2021-05-21 20:00:33,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:00:33,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:00:33,086 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:00:33,086 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:00:33,086 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1649509819] [2021-05-21 20:00:33,086 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1649509819] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:00:33,086 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:00:33,086 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-21 20:00:33,086 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [308709937] [2021-05-21 20:00:33,086 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:00:33,086 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:00:33,086 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:00:33,086 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:00:33,087 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) [2021-05-21 20:00:33,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:00:33,244 INFO L93 Difference]: Finished difference Result 1497 states and 4138 transitions. [2021-05-21 20:00:33,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:00:33,245 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-05-21 20:00:33,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:00:33,246 INFO L225 Difference]: With dead ends: 1497 [2021-05-21 20:00:33,246 INFO L226 Difference]: Without dead ends: 1414 [2021-05-21 20:00:33,246 INFO L777 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 [2021-05-21 20:00:33,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1414 states. [2021-05-21 20:00:33,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1414 to 1357. [2021-05-21 20:00:33,258 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) [2021-05-21 20:00:33,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1357 states to 1357 states and 3789 transitions. [2021-05-21 20:00:33,260 INFO L78 Accepts]: Start accepts. Automaton has 1357 states and 3789 transitions. Word has length 26 [2021-05-21 20:00:33,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:00:33,260 INFO L482 AbstractCegarLoop]: Abstraction has 1357 states and 3789 transitions. [2021-05-21 20:00:33,260 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:00:33,260 INFO L276 IsEmpty]: Start isEmpty. Operand 1357 states and 3789 transitions. [2021-05-21 20:00:33,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 20:00:33,261 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:00:33,261 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:00:33,261 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable220 [2021-05-21 20:00:33,261 INFO L430 AbstractCegarLoop]: === Iteration 222 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 20:00:33,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:00:33,262 INFO L82 PathProgramCache]: Analyzing trace with hash -2027439616, now seen corresponding path program 220 times [2021-05-21 20:00:33,262 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:00:33,262 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [934943261] [2021-05-21 20:00:33,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:00:33,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:00:33,318 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:00:33,318 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:00:33,318 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [934943261] [2021-05-21 20:00:33,318 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [934943261] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:00:33,318 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:00:33,318 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-21 20:00:33,318 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1578186689] [2021-05-21 20:00:33,318 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:00:33,318 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:00:33,319 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:00:33,319 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:00:33,319 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) [2021-05-21 20:00:33,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:00:33,473 INFO L93 Difference]: Finished difference Result 1489 states and 4130 transitions. [2021-05-21 20:00:33,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:00:33,473 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 [2021-05-21 20:00:33,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:00:33,475 INFO L225 Difference]: With dead ends: 1489 [2021-05-21 20:00:33,475 INFO L226 Difference]: Without dead ends: 1401 [2021-05-21 20:00:33,475 INFO L777 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 [2021-05-21 20:00:33,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1401 states. [2021-05-21 20:00:33,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1401 to 1361. [2021-05-21 20:00:33,487 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) [2021-05-21 20:00:33,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1361 states to 1361 states and 3801 transitions. [2021-05-21 20:00:33,488 INFO L78 Accepts]: Start accepts. Automaton has 1361 states and 3801 transitions. Word has length 26 [2021-05-21 20:00:33,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:00:33,488 INFO L482 AbstractCegarLoop]: Abstraction has 1361 states and 3801 transitions. [2021-05-21 20:00:33,488 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:00:33,489 INFO L276 IsEmpty]: Start isEmpty. Operand 1361 states and 3801 transitions. [2021-05-21 20:00:33,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 20:00:33,490 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:00:33,490 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:00:33,490 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable221 [2021-05-21 20:00:33,490 INFO L430 AbstractCegarLoop]: === Iteration 223 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 20:00:33,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:00:33,490 INFO L82 PathProgramCache]: Analyzing trace with hash 1555459838, now seen corresponding path program 221 times [2021-05-21 20:00:33,490 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:00:33,490 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [695633100] [2021-05-21 20:00:33,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:00:33,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:00:33,544 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:00:33,544 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:00:33,544 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [695633100] [2021-05-21 20:00:33,544 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [695633100] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:00:33,544 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:00:33,545 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-21 20:00:33,545 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1134912640] [2021-05-21 20:00:33,545 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:00:33,545 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:00:33,545 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:00:33,545 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:00:33,545 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) [2021-05-21 20:00:33,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:00:33,702 INFO L93 Difference]: Finished difference Result 1502 states and 4148 transitions. [2021-05-21 20:00:33,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:00:33,702 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 [2021-05-21 20:00:33,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:00:33,704 INFO L225 Difference]: With dead ends: 1502 [2021-05-21 20:00:33,704 INFO L226 Difference]: Without dead ends: 1414 [2021-05-21 20:00:33,704 INFO L777 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 [2021-05-21 20:00:33,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1414 states. [2021-05-21 20:00:33,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1414 to 1360. [2021-05-21 20:00:33,716 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) [2021-05-21 20:00:33,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1360 states to 1360 states and 3801 transitions. [2021-05-21 20:00:33,717 INFO L78 Accepts]: Start accepts. Automaton has 1360 states and 3801 transitions. Word has length 26 [2021-05-21 20:00:33,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:00:33,717 INFO L482 AbstractCegarLoop]: Abstraction has 1360 states and 3801 transitions. [2021-05-21 20:00:33,718 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:00:33,718 INFO L276 IsEmpty]: Start isEmpty. Operand 1360 states and 3801 transitions. [2021-05-21 20:00:33,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 20:00:33,719 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:00:33,719 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:00:33,719 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable222 [2021-05-21 20:00:33,719 INFO L430 AbstractCegarLoop]: === Iteration 224 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 20:00:33,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:00:33,719 INFO L82 PathProgramCache]: Analyzing trace with hash -528175042, now seen corresponding path program 222 times [2021-05-21 20:00:33,726 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:00:33,727 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [61666794] [2021-05-21 20:00:33,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:00:33,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:00:33,798 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:00:33,798 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:00:33,798 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [61666794] [2021-05-21 20:00:33,799 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [61666794] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:00:33,799 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:00:33,799 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-21 20:00:33,799 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1169230322] [2021-05-21 20:00:33,799 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:00:33,799 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:00:33,799 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:00:33,799 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:00:33,799 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) [2021-05-21 20:00:33,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:00:33,985 INFO L93 Difference]: Finished difference Result 1528 states and 4222 transitions. [2021-05-21 20:00:33,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:00:33,986 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-05-21 20:00:33,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:00:33,987 INFO L225 Difference]: With dead ends: 1528 [2021-05-21 20:00:33,987 INFO L226 Difference]: Without dead ends: 1443 [2021-05-21 20:00:33,988 INFO L777 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 [2021-05-21 20:00:33,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1443 states. [2021-05-21 20:00:33,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1443 to 1358. [2021-05-21 20:00:34,000 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) [2021-05-21 20:00:34,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1358 states to 1358 states and 3793 transitions. [2021-05-21 20:00:34,002 INFO L78 Accepts]: Start accepts. Automaton has 1358 states and 3793 transitions. Word has length 26 [2021-05-21 20:00:34,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:00:34,002 INFO L482 AbstractCegarLoop]: Abstraction has 1358 states and 3793 transitions. [2021-05-21 20:00:34,002 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) [2021-05-21 20:00:34,002 INFO L276 IsEmpty]: Start isEmpty. Operand 1358 states and 3793 transitions. [2021-05-21 20:00:34,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 20:00:34,003 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:00:34,003 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:00:34,003 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable223 [2021-05-21 20:00:34,003 INFO L430 AbstractCegarLoop]: === Iteration 225 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 20:00:34,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:00:34,003 INFO L82 PathProgramCache]: Analyzing trace with hash -1101572318, now seen corresponding path program 223 times [2021-05-21 20:00:34,004 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:00:34,004 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [210750606] [2021-05-21 20:00:34,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:00:34,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:00:34,057 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:00:34,057 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:00:34,057 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [210750606] [2021-05-21 20:00:34,057 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [210750606] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:00:34,057 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:00:34,058 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-21 20:00:34,058 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1467071302] [2021-05-21 20:00:34,058 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:00:34,058 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:00:34,058 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:00:34,058 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:00:34,058 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) [2021-05-21 20:00:34,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:00:34,220 INFO L93 Difference]: Finished difference Result 1519 states and 4205 transitions. [2021-05-21 20:00:34,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:00:34,220 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 [2021-05-21 20:00:34,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:00:34,221 INFO L225 Difference]: With dead ends: 1519 [2021-05-21 20:00:34,221 INFO L226 Difference]: Without dead ends: 1436 [2021-05-21 20:00:34,222 INFO L777 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 [2021-05-21 20:00:34,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1436 states. [2021-05-21 20:00:34,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1436 to 1359. [2021-05-21 20:00:34,233 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) [2021-05-21 20:00:34,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1359 states to 1359 states and 3792 transitions. [2021-05-21 20:00:34,235 INFO L78 Accepts]: Start accepts. Automaton has 1359 states and 3792 transitions. Word has length 26 [2021-05-21 20:00:34,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:00:34,235 INFO L482 AbstractCegarLoop]: Abstraction has 1359 states and 3792 transitions. [2021-05-21 20:00:34,235 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:00:34,235 INFO L276 IsEmpty]: Start isEmpty. Operand 1359 states and 3792 transitions. [2021-05-21 20:00:34,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 20:00:34,236 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:00:34,236 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:00:34,236 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable224 [2021-05-21 20:00:34,236 INFO L430 AbstractCegarLoop]: === Iteration 226 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 20:00:34,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:00:34,236 INFO L82 PathProgramCache]: Analyzing trace with hash 1944327842, now seen corresponding path program 224 times [2021-05-21 20:00:34,236 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:00:34,237 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [345892264] [2021-05-21 20:00:34,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:00:34,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:00:34,290 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:00:34,290 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:00:34,290 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [345892264] [2021-05-21 20:00:34,290 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [345892264] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:00:34,290 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:00:34,290 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-21 20:00:34,290 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1376436068] [2021-05-21 20:00:34,290 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:00:34,290 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:00:34,291 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:00:34,291 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:00:34,291 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) [2021-05-21 20:00:34,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:00:34,445 INFO L93 Difference]: Finished difference Result 1503 states and 4164 transitions. [2021-05-21 20:00:34,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:00:34,446 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-05-21 20:00:34,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:00:34,447 INFO L225 Difference]: With dead ends: 1503 [2021-05-21 20:00:34,447 INFO L226 Difference]: Without dead ends: 1416 [2021-05-21 20:00:34,447 INFO L777 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 [2021-05-21 20:00:34,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1416 states. [2021-05-21 20:00:34,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1416 to 1358. [2021-05-21 20:00:34,459 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) [2021-05-21 20:00:34,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1358 states to 1358 states and 3792 transitions. [2021-05-21 20:00:34,460 INFO L78 Accepts]: Start accepts. Automaton has 1358 states and 3792 transitions. Word has length 26 [2021-05-21 20:00:34,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:00:34,460 INFO L482 AbstractCegarLoop]: Abstraction has 1358 states and 3792 transitions. [2021-05-21 20:00:34,460 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:00:34,460 INFO L276 IsEmpty]: Start isEmpty. Operand 1358 states and 3792 transitions. [2021-05-21 20:00:34,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 20:00:34,462 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:00:34,462 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:00:34,462 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable225 [2021-05-21 20:00:34,462 INFO L430 AbstractCegarLoop]: === Iteration 227 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 20:00:34,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:00:34,462 INFO L82 PathProgramCache]: Analyzing trace with hash 1204204642, now seen corresponding path program 225 times [2021-05-21 20:00:34,462 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:00:34,462 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [32119845] [2021-05-21 20:00:34,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:00:34,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:00:34,517 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:00:34,517 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:00:34,517 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [32119845] [2021-05-21 20:00:34,517 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [32119845] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:00:34,517 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:00:34,517 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-21 20:00:34,517 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [923255888] [2021-05-21 20:00:34,517 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:00:34,517 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:00:34,518 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:00:34,518 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:00:34,518 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) [2021-05-21 20:00:34,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:00:34,686 INFO L93 Difference]: Finished difference Result 1491 states and 4141 transitions. [2021-05-21 20:00:34,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:00:34,686 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-05-21 20:00:34,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:00:34,688 INFO L225 Difference]: With dead ends: 1491 [2021-05-21 20:00:34,688 INFO L226 Difference]: Without dead ends: 1403 [2021-05-21 20:00:34,688 INFO L777 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 [2021-05-21 20:00:34,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1403 states. [2021-05-21 20:00:34,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1403 to 1360. [2021-05-21 20:00:34,700 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) [2021-05-21 20:00:34,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1360 states to 1360 states and 3799 transitions. [2021-05-21 20:00:34,701 INFO L78 Accepts]: Start accepts. Automaton has 1360 states and 3799 transitions. Word has length 26 [2021-05-21 20:00:34,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:00:34,702 INFO L482 AbstractCegarLoop]: Abstraction has 1360 states and 3799 transitions. [2021-05-21 20:00:34,702 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) [2021-05-21 20:00:34,702 INFO L276 IsEmpty]: Start isEmpty. Operand 1360 states and 3799 transitions. [2021-05-21 20:00:34,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 20:00:34,703 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:00:34,703 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:00:34,703 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable226 [2021-05-21 20:00:34,703 INFO L430 AbstractCegarLoop]: === Iteration 228 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 20:00:34,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:00:34,703 INFO L82 PathProgramCache]: Analyzing trace with hash 492136800, now seen corresponding path program 226 times [2021-05-21 20:00:34,703 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:00:34,703 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [669611425] [2021-05-21 20:00:34,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:00:34,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:00:34,761 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:00:34,761 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:00:34,761 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [669611425] [2021-05-21 20:00:34,761 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [669611425] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:00:34,761 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:00:34,761 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-21 20:00:34,762 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [739628206] [2021-05-21 20:00:34,762 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:00:34,762 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:00:34,762 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:00:34,762 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:00:34,762 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) [2021-05-21 20:00:34,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:00:34,921 INFO L93 Difference]: Finished difference Result 1499 states and 4143 transitions. [2021-05-21 20:00:34,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:00:34,921 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-05-21 20:00:34,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:00:34,923 INFO L225 Difference]: With dead ends: 1499 [2021-05-21 20:00:34,923 INFO L226 Difference]: Without dead ends: 1413 [2021-05-21 20:00:34,923 INFO L777 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 [2021-05-21 20:00:34,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1413 states. [2021-05-21 20:00:34,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1413 to 1359. [2021-05-21 20:00:34,934 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) [2021-05-21 20:00:34,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1359 states to 1359 states and 3792 transitions. [2021-05-21 20:00:34,936 INFO L78 Accepts]: Start accepts. Automaton has 1359 states and 3792 transitions. Word has length 26 [2021-05-21 20:00:34,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:00:34,936 INFO L482 AbstractCegarLoop]: Abstraction has 1359 states and 3792 transitions. [2021-05-21 20:00:34,936 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) [2021-05-21 20:00:34,936 INFO L276 IsEmpty]: Start isEmpty. Operand 1359 states and 3792 transitions. [2021-05-21 20:00:34,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 20:00:34,937 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:00:34,937 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:00:34,937 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable227 [2021-05-21 20:00:34,937 INFO L430 AbstractCegarLoop]: === Iteration 229 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 20:00:34,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:00:34,938 INFO L82 PathProgramCache]: Analyzing trace with hash -187939904, now seen corresponding path program 227 times [2021-05-21 20:00:34,938 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:00:34,938 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1927487524] [2021-05-21 20:00:34,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:00:34,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:00:34,996 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:00:34,996 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:00:34,996 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1927487524] [2021-05-21 20:00:34,996 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1927487524] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:00:34,996 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:00:34,996 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-21 20:00:34,996 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [297626675] [2021-05-21 20:00:34,996 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:00:34,996 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:00:34,997 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:00:34,997 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:00:34,997 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) [2021-05-21 20:00:35,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:00:35,154 INFO L93 Difference]: Finished difference Result 1555 states and 4298 transitions. [2021-05-21 20:00:35,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:00:35,154 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-05-21 20:00:35,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:00:35,156 INFO L225 Difference]: With dead ends: 1555 [2021-05-21 20:00:35,156 INFO L226 Difference]: Without dead ends: 1458 [2021-05-21 20:00:35,156 INFO L777 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 [2021-05-21 20:00:35,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1458 states. [2021-05-21 20:00:35,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1458 to 1352. [2021-05-21 20:00:35,168 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) [2021-05-21 20:00:35,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1352 states to 1352 states and 3769 transitions. [2021-05-21 20:00:35,170 INFO L78 Accepts]: Start accepts. Automaton has 1352 states and 3769 transitions. Word has length 26 [2021-05-21 20:00:35,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:00:35,170 INFO L482 AbstractCegarLoop]: Abstraction has 1352 states and 3769 transitions. [2021-05-21 20:00:35,170 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:00:35,170 INFO L276 IsEmpty]: Start isEmpty. Operand 1352 states and 3769 transitions. [2021-05-21 20:00:35,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 20:00:35,171 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:00:35,171 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:00:35,171 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable228 [2021-05-21 20:00:35,171 INFO L430 AbstractCegarLoop]: === Iteration 230 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 20:00:35,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:00:35,171 INFO L82 PathProgramCache]: Analyzing trace with hash 402377150, now seen corresponding path program 228 times [2021-05-21 20:00:35,172 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:00:35,172 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1655553984] [2021-05-21 20:00:35,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:00:35,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:00:35,237 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:00:35,237 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:00:35,237 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1655553984] [2021-05-21 20:00:35,237 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1655553984] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:00:35,237 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:00:35,237 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-21 20:00:35,237 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [856538023] [2021-05-21 20:00:35,237 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:00:35,238 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:00:35,238 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:00:35,238 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:00:35,238 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) [2021-05-21 20:00:35,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:00:35,407 INFO L93 Difference]: Finished difference Result 1504 states and 4155 transitions. [2021-05-21 20:00:35,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:00:35,407 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 [2021-05-21 20:00:35,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:00:35,408 INFO L225 Difference]: With dead ends: 1504 [2021-05-21 20:00:35,408 INFO L226 Difference]: Without dead ends: 1415 [2021-05-21 20:00:35,408 INFO L777 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 [2021-05-21 20:00:35,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1415 states. [2021-05-21 20:00:35,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1415 to 1347. [2021-05-21 20:00:35,420 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) [2021-05-21 20:00:35,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1347 states to 1347 states and 3758 transitions. [2021-05-21 20:00:35,421 INFO L78 Accepts]: Start accepts. Automaton has 1347 states and 3758 transitions. Word has length 26 [2021-05-21 20:00:35,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:00:35,422 INFO L482 AbstractCegarLoop]: Abstraction has 1347 states and 3758 transitions. [2021-05-21 20:00:35,422 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:00:35,422 INFO L276 IsEmpty]: Start isEmpty. Operand 1347 states and 3758 transitions. [2021-05-21 20:00:35,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 20:00:35,423 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:00:35,423 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:00:35,423 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable229 [2021-05-21 20:00:35,423 INFO L430 AbstractCegarLoop]: === Iteration 231 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 20:00:35,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:00:35,423 INFO L82 PathProgramCache]: Analyzing trace with hash 1005160398, now seen corresponding path program 229 times [2021-05-21 20:00:35,423 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:00:35,423 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [675726001] [2021-05-21 20:00:35,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:00:35,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:00:35,468 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:00:35,469 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:00:35,469 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [675726001] [2021-05-21 20:00:35,469 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [675726001] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:00:35,469 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:00:35,469 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:00:35,469 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [978664886] [2021-05-21 20:00:35,469 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-21 20:00:35,469 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:00:35,469 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-21 20:00:35,469 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-05-21 20:00:35,469 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) [2021-05-21 20:00:35,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:00:35,596 INFO L93 Difference]: Finished difference Result 1541 states and 4265 transitions. [2021-05-21 20:00:35,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-21 20:00:35,596 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 [2021-05-21 20:00:35,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:00:35,597 INFO L225 Difference]: With dead ends: 1541 [2021-05-21 20:00:35,597 INFO L226 Difference]: Without dead ends: 1453 [2021-05-21 20:00:35,598 INFO L777 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 [2021-05-21 20:00:35,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1453 states. [2021-05-21 20:00:35,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1453 to 1373. [2021-05-21 20:00:35,609 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) [2021-05-21 20:00:35,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1373 states to 1373 states and 3834 transitions. [2021-05-21 20:00:35,611 INFO L78 Accepts]: Start accepts. Automaton has 1373 states and 3834 transitions. Word has length 26 [2021-05-21 20:00:35,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:00:35,611 INFO L482 AbstractCegarLoop]: Abstraction has 1373 states and 3834 transitions. [2021-05-21 20:00:35,611 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) [2021-05-21 20:00:35,611 INFO L276 IsEmpty]: Start isEmpty. Operand 1373 states and 3834 transitions. [2021-05-21 20:00:35,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 20:00:35,612 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:00:35,612 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:00:35,612 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable230 [2021-05-21 20:00:35,612 INFO L430 AbstractCegarLoop]: === Iteration 232 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 20:00:35,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:00:35,612 INFO L82 PathProgramCache]: Analyzing trace with hash 293092556, now seen corresponding path program 230 times [2021-05-21 20:00:35,612 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:00:35,612 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [715529390] [2021-05-21 20:00:35,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:00:35,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:00:35,673 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:00:35,674 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:00:35,674 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [715529390] [2021-05-21 20:00:35,674 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [715529390] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:00:35,674 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:00:35,674 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-21 20:00:35,674 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [373613559] [2021-05-21 20:00:35,674 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:00:35,674 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:00:35,674 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:00:35,674 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:00:35,674 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) [2021-05-21 20:00:35,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:00:35,830 INFO L93 Difference]: Finished difference Result 1604 states and 4405 transitions. [2021-05-21 20:00:35,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:00:35,830 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-05-21 20:00:35,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:00:35,832 INFO L225 Difference]: With dead ends: 1604 [2021-05-21 20:00:35,832 INFO L226 Difference]: Without dead ends: 1393 [2021-05-21 20:00:35,832 INFO L777 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 [2021-05-21 20:00:35,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1393 states. [2021-05-21 20:00:35,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1393 to 1293. [2021-05-21 20:00:35,843 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) [2021-05-21 20:00:35,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1293 states to 1293 states and 3593 transitions. [2021-05-21 20:00:35,844 INFO L78 Accepts]: Start accepts. Automaton has 1293 states and 3593 transitions. Word has length 26 [2021-05-21 20:00:35,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:00:35,844 INFO L482 AbstractCegarLoop]: Abstraction has 1293 states and 3593 transitions. [2021-05-21 20:00:35,844 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:00:35,845 INFO L276 IsEmpty]: Start isEmpty. Operand 1293 states and 3593 transitions. [2021-05-21 20:00:35,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 20:00:35,846 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:00:35,846 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:00:35,846 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable231 [2021-05-21 20:00:35,846 INFO L430 AbstractCegarLoop]: === Iteration 233 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 20:00:35,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:00:35,846 INFO L82 PathProgramCache]: Analyzing trace with hash -705195920, now seen corresponding path program 231 times [2021-05-21 20:00:35,846 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:00:35,846 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [466311183] [2021-05-21 20:00:35,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:00:35,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:00:35,904 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:00:35,904 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:00:35,905 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [466311183] [2021-05-21 20:00:35,905 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [466311183] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:00:35,905 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:00:35,905 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-21 20:00:35,905 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1420886065] [2021-05-21 20:00:35,905 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:00:35,905 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:00:35,905 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:00:35,905 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:00:35,905 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) [2021-05-21 20:00:36,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:00:36,058 INFO L93 Difference]: Finished difference Result 1480 states and 4066 transitions. [2021-05-21 20:00:36,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:00:36,059 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-05-21 20:00:36,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:00:36,060 INFO L225 Difference]: With dead ends: 1480 [2021-05-21 20:00:36,060 INFO L226 Difference]: Without dead ends: 1392 [2021-05-21 20:00:36,060 INFO L777 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 [2021-05-21 20:00:36,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1392 states. [2021-05-21 20:00:36,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1392 to 1290. [2021-05-21 20:00:36,071 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) [2021-05-21 20:00:36,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1290 states to 1290 states and 3585 transitions. [2021-05-21 20:00:36,073 INFO L78 Accepts]: Start accepts. Automaton has 1290 states and 3585 transitions. Word has length 26 [2021-05-21 20:00:36,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:00:36,073 INFO L482 AbstractCegarLoop]: Abstraction has 1290 states and 3585 transitions. [2021-05-21 20:00:36,073 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:00:36,073 INFO L276 IsEmpty]: Start isEmpty. Operand 1290 states and 3585 transitions. [2021-05-21 20:00:36,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 20:00:36,074 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:00:36,074 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:00:36,074 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable232 [2021-05-21 20:00:36,075 INFO L430 AbstractCegarLoop]: === Iteration 234 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 20:00:36,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:00:36,075 INFO L82 PathProgramCache]: Analyzing trace with hash -1417263762, now seen corresponding path program 232 times [2021-05-21 20:00:36,075 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:00:36,075 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [596406402] [2021-05-21 20:00:36,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:00:36,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:00:36,137 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:00:36,137 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:00:36,137 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [596406402] [2021-05-21 20:00:36,137 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [596406402] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:00:36,137 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:00:36,137 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-21 20:00:36,137 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [881171345] [2021-05-21 20:00:36,138 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:00:36,138 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:00:36,138 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:00:36,138 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:00:36,138 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) [2021-05-21 20:00:36,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:00:36,290 INFO L93 Difference]: Finished difference Result 1427 states and 3933 transitions. [2021-05-21 20:00:36,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:00:36,290 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-05-21 20:00:36,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:00:36,292 INFO L225 Difference]: With dead ends: 1427 [2021-05-21 20:00:36,292 INFO L226 Difference]: Without dead ends: 1341 [2021-05-21 20:00:36,292 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 55.1ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:00:36,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1341 states. [2021-05-21 20:00:36,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1341 to 1293. [2021-05-21 20:00:36,303 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) [2021-05-21 20:00:36,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1293 states to 1293 states and 3590 transitions. [2021-05-21 20:00:36,304 INFO L78 Accepts]: Start accepts. Automaton has 1293 states and 3590 transitions. Word has length 26 [2021-05-21 20:00:36,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:00:36,304 INFO L482 AbstractCegarLoop]: Abstraction has 1293 states and 3590 transitions. [2021-05-21 20:00:36,304 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:00:36,304 INFO L276 IsEmpty]: Start isEmpty. Operand 1293 states and 3590 transitions. [2021-05-21 20:00:36,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 20:00:36,305 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:00:36,305 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:00:36,305 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable233 [2021-05-21 20:00:36,305 INFO L430 AbstractCegarLoop]: === Iteration 235 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 20:00:36,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:00:36,306 INFO L82 PathProgramCache]: Analyzing trace with hash -1507023412, now seen corresponding path program 233 times [2021-05-21 20:00:36,306 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:00:36,306 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1494054072] [2021-05-21 20:00:36,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:00:36,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:00:36,359 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:00:36,359 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:00:36,359 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1494054072] [2021-05-21 20:00:36,359 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1494054072] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:00:36,359 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:00:36,359 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-21 20:00:36,359 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1043021193] [2021-05-21 20:00:36,359 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:00:36,359 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:00:36,359 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:00:36,359 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:00:36,359 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) [2021-05-21 20:00:36,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:00:36,509 INFO L93 Difference]: Finished difference Result 1430 states and 3930 transitions. [2021-05-21 20:00:36,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:00:36,509 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-05-21 20:00:36,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:00:36,510 INFO L225 Difference]: With dead ends: 1430 [2021-05-21 20:00:36,510 INFO L226 Difference]: Without dead ends: 1298 [2021-05-21 20:00:36,510 INFO L777 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 [2021-05-21 20:00:36,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1298 states. [2021-05-21 20:00:36,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1298 to 1201. [2021-05-21 20:00:36,520 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) [2021-05-21 20:00:36,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1201 states to 1201 states and 3351 transitions. [2021-05-21 20:00:36,522 INFO L78 Accepts]: Start accepts. Automaton has 1201 states and 3351 transitions. Word has length 26 [2021-05-21 20:00:36,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:00:36,522 INFO L482 AbstractCegarLoop]: Abstraction has 1201 states and 3351 transitions. [2021-05-21 20:00:36,522 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:00:36,522 INFO L276 IsEmpty]: Start isEmpty. Operand 1201 states and 3351 transitions. [2021-05-21 20:00:36,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 20:00:36,523 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:00:36,523 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:00:36,523 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable234 [2021-05-21 20:00:36,523 INFO L430 AbstractCegarLoop]: === Iteration 236 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 20:00:36,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:00:36,523 INFO L82 PathProgramCache]: Analyzing trace with hash -1300378374, now seen corresponding path program 234 times [2021-05-21 20:00:36,523 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:00:36,524 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1184490137] [2021-05-21 20:00:36,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:00:36,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:00:36,567 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:00:36,567 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:00:36,567 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1184490137] [2021-05-21 20:00:36,567 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1184490137] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:00:36,567 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:00:36,567 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:00:36,567 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1734150860] [2021-05-21 20:00:36,567 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-21 20:00:36,567 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:00:36,567 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-21 20:00:36,567 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-05-21 20:00:36,568 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) [2021-05-21 20:00:36,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:00:36,689 INFO L93 Difference]: Finished difference Result 1516 states and 4163 transitions. [2021-05-21 20:00:36,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-21 20:00:36,690 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 [2021-05-21 20:00:36,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:00:36,691 INFO L225 Difference]: With dead ends: 1516 [2021-05-21 20:00:36,691 INFO L226 Difference]: Without dead ends: 1341 [2021-05-21 20:00:36,691 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 36.8ms TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-05-21 20:00:36,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1341 states. [2021-05-21 20:00:36,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1341 to 1275. [2021-05-21 20:00:36,701 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) [2021-05-21 20:00:36,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1275 states to 1275 states and 3530 transitions. [2021-05-21 20:00:36,703 INFO L78 Accepts]: Start accepts. Automaton has 1275 states and 3530 transitions. Word has length 26 [2021-05-21 20:00:36,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:00:36,703 INFO L482 AbstractCegarLoop]: Abstraction has 1275 states and 3530 transitions. [2021-05-21 20:00:36,703 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) [2021-05-21 20:00:36,703 INFO L276 IsEmpty]: Start isEmpty. Operand 1275 states and 3530 transitions. [2021-05-21 20:00:36,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 20:00:36,704 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:00:36,704 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:00:36,704 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable235 [2021-05-21 20:00:36,704 INFO L430 AbstractCegarLoop]: === Iteration 237 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 20:00:36,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:00:36,704 INFO L82 PathProgramCache]: Analyzing trace with hash 2135003928, now seen corresponding path program 235 times [2021-05-21 20:00:36,705 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:00:36,705 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1825294195] [2021-05-21 20:00:36,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:00:36,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:00:36,761 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:00:36,761 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:00:36,761 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1825294195] [2021-05-21 20:00:36,761 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1825294195] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:00:36,761 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:00:36,761 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-21 20:00:36,761 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1558280454] [2021-05-21 20:00:36,761 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:00:36,761 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:00:36,761 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:00:36,761 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:00:36,761 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) [2021-05-21 20:00:36,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:00:36,909 INFO L93 Difference]: Finished difference Result 1474 states and 4020 transitions. [2021-05-21 20:00:36,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:00:36,909 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-05-21 20:00:36,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:00:36,910 INFO L225 Difference]: With dead ends: 1474 [2021-05-21 20:00:36,910 INFO L226 Difference]: Without dead ends: 1337 [2021-05-21 20:00:36,911 INFO L777 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 [2021-05-21 20:00:36,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1337 states. [2021-05-21 20:00:36,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1337 to 1249. [2021-05-21 20:00:36,921 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) [2021-05-21 20:00:36,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1249 states to 1249 states and 3456 transitions. [2021-05-21 20:00:36,923 INFO L78 Accepts]: Start accepts. Automaton has 1249 states and 3456 transitions. Word has length 26 [2021-05-21 20:00:36,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:00:36,923 INFO L482 AbstractCegarLoop]: Abstraction has 1249 states and 3456 transitions. [2021-05-21 20:00:36,923 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:00:36,923 INFO L276 IsEmpty]: Start isEmpty. Operand 1249 states and 3456 transitions. [2021-05-21 20:00:36,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 20:00:36,924 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:00:36,924 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:00:36,924 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable236 [2021-05-21 20:00:36,924 INFO L430 AbstractCegarLoop]: === Iteration 238 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 20:00:36,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:00:36,924 INFO L82 PathProgramCache]: Analyzing trace with hash 1232534076, now seen corresponding path program 236 times [2021-05-21 20:00:36,924 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:00:36,924 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1491561340] [2021-05-21 20:00:36,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:00:36,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:00:36,970 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:00:36,970 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:00:36,971 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1491561340] [2021-05-21 20:00:36,971 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1491561340] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:00:36,971 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:00:36,971 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:00:36,971 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1141621468] [2021-05-21 20:00:36,971 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-21 20:00:36,971 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:00:36,971 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-21 20:00:36,971 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-05-21 20:00:36,971 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) [2021-05-21 20:00:37,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:00:37,088 INFO L93 Difference]: Finished difference Result 1527 states and 4192 transitions. [2021-05-21 20:00:37,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-21 20:00:37,088 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 [2021-05-21 20:00:37,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:00:37,089 INFO L225 Difference]: With dead ends: 1527 [2021-05-21 20:00:37,089 INFO L226 Difference]: Without dead ends: 1416 [2021-05-21 20:00:37,090 INFO L777 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 [2021-05-21 20:00:37,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1416 states. [2021-05-21 20:00:37,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1416 to 1255. [2021-05-21 20:00:37,100 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) [2021-05-21 20:00:37,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1255 states to 1255 states and 3466 transitions. [2021-05-21 20:00:37,102 INFO L78 Accepts]: Start accepts. Automaton has 1255 states and 3466 transitions. Word has length 26 [2021-05-21 20:00:37,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:00:37,102 INFO L482 AbstractCegarLoop]: Abstraction has 1255 states and 3466 transitions. [2021-05-21 20:00:37,102 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) [2021-05-21 20:00:37,102 INFO L276 IsEmpty]: Start isEmpty. Operand 1255 states and 3466 transitions. [2021-05-21 20:00:37,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 20:00:37,103 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:00:37,103 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:00:37,103 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable237 [2021-05-21 20:00:37,103 INFO L430 AbstractCegarLoop]: === Iteration 239 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 20:00:37,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:00:37,103 INFO L82 PathProgramCache]: Analyzing trace with hash 324282940, now seen corresponding path program 237 times [2021-05-21 20:00:37,103 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:00:37,103 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [452527320] [2021-05-21 20:00:37,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:00:37,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:00:37,162 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:00:37,163 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:00:37,163 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [452527320] [2021-05-21 20:00:37,163 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [452527320] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:00:37,163 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:00:37,163 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-21 20:00:37,163 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [581654240] [2021-05-21 20:00:37,163 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:00:37,163 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:00:37,163 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:00:37,163 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:00:37,164 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) [2021-05-21 20:00:37,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:00:37,320 INFO L93 Difference]: Finished difference Result 1417 states and 3868 transitions. [2021-05-21 20:00:37,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:00:37,320 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-05-21 20:00:37,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:00:37,321 INFO L225 Difference]: With dead ends: 1417 [2021-05-21 20:00:37,321 INFO L226 Difference]: Without dead ends: 1324 [2021-05-21 20:00:37,322 INFO L777 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 [2021-05-21 20:00:37,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1324 states. [2021-05-21 20:00:37,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1324 to 1258. [2021-05-21 20:00:37,332 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) [2021-05-21 20:00:37,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1258 states to 1258 states and 3477 transitions. [2021-05-21 20:00:37,334 INFO L78 Accepts]: Start accepts. Automaton has 1258 states and 3477 transitions. Word has length 26 [2021-05-21 20:00:37,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:00:37,334 INFO L482 AbstractCegarLoop]: Abstraction has 1258 states and 3477 transitions. [2021-05-21 20:00:37,334 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:00:37,334 INFO L276 IsEmpty]: Start isEmpty. Operand 1258 states and 3477 transitions. [2021-05-21 20:00:37,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 20:00:37,335 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:00:37,335 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:00:37,335 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable238 [2021-05-21 20:00:37,335 INFO L430 AbstractCegarLoop]: === Iteration 240 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 20:00:37,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:00:37,335 INFO L82 PathProgramCache]: Analyzing trace with hash 1193727548, now seen corresponding path program 238 times [2021-05-21 20:00:37,336 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:00:37,336 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [246709603] [2021-05-21 20:00:37,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:00:37,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:00:37,389 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:00:37,389 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:00:37,389 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [246709603] [2021-05-21 20:00:37,389 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [246709603] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:00:37,389 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:00:37,389 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-21 20:00:37,390 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [608622562] [2021-05-21 20:00:37,390 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:00:37,390 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:00:37,390 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:00:37,390 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:00:37,390 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) [2021-05-21 20:00:37,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:00:37,543 INFO L93 Difference]: Finished difference Result 1452 states and 3941 transitions. [2021-05-21 20:00:37,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:00:37,544 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 [2021-05-21 20:00:37,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:00:37,545 INFO L225 Difference]: With dead ends: 1452 [2021-05-21 20:00:37,545 INFO L226 Difference]: Without dead ends: 1334 [2021-05-21 20:00:37,545 INFO L777 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 [2021-05-21 20:00:37,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1334 states. [2021-05-21 20:00:37,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1334 to 1252. [2021-05-21 20:00:37,556 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) [2021-05-21 20:00:37,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1252 states to 1252 states and 3449 transitions. [2021-05-21 20:00:37,557 INFO L78 Accepts]: Start accepts. Automaton has 1252 states and 3449 transitions. Word has length 26 [2021-05-21 20:00:37,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:00:37,557 INFO L482 AbstractCegarLoop]: Abstraction has 1252 states and 3449 transitions. [2021-05-21 20:00:37,558 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) [2021-05-21 20:00:37,558 INFO L276 IsEmpty]: Start isEmpty. Operand 1252 states and 3449 transitions. [2021-05-21 20:00:37,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 20:00:37,559 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:00:37,559 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:00:37,559 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable239 [2021-05-21 20:00:37,559 INFO L430 AbstractCegarLoop]: === Iteration 241 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 20:00:37,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:00:37,559 INFO L82 PathProgramCache]: Analyzing trace with hash 1244858906, now seen corresponding path program 239 times [2021-05-21 20:00:37,559 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:00:37,559 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [569976863] [2021-05-21 20:00:37,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:00:37,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:00:37,626 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:00:37,626 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:00:37,626 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [569976863] [2021-05-21 20:00:37,626 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [569976863] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:00:37,626 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:00:37,626 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-21 20:00:37,626 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1093852387] [2021-05-21 20:00:37,626 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:00:37,626 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:00:37,627 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:00:37,627 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:00:37,627 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) [2021-05-21 20:00:37,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:00:37,777 INFO L93 Difference]: Finished difference Result 1528 states and 4182 transitions. [2021-05-21 20:00:37,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:00:37,777 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-05-21 20:00:37,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:00:37,779 INFO L225 Difference]: With dead ends: 1528 [2021-05-21 20:00:37,779 INFO L226 Difference]: Without dead ends: 1420 [2021-05-21 20:00:37,779 INFO L777 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 [2021-05-21 20:00:37,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1420 states. [2021-05-21 20:00:37,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1420 to 1249. [2021-05-21 20:00:37,790 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) [2021-05-21 20:00:37,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1249 states to 1249 states and 3441 transitions. [2021-05-21 20:00:37,791 INFO L78 Accepts]: Start accepts. Automaton has 1249 states and 3441 transitions. Word has length 26 [2021-05-21 20:00:37,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:00:37,791 INFO L482 AbstractCegarLoop]: Abstraction has 1249 states and 3441 transitions. [2021-05-21 20:00:37,791 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:00:37,791 INFO L276 IsEmpty]: Start isEmpty. Operand 1249 states and 3441 transitions. [2021-05-21 20:00:37,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 20:00:37,792 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:00:37,792 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:00:37,792 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable240 [2021-05-21 20:00:37,792 INFO L430 AbstractCegarLoop]: === Iteration 242 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 20:00:37,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:00:37,793 INFO L82 PathProgramCache]: Analyzing trace with hash 396768502, now seen corresponding path program 240 times [2021-05-21 20:00:37,793 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:00:37,793 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [833438317] [2021-05-21 20:00:37,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:00:37,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:00:37,841 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:00:37,841 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:00:37,841 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [833438317] [2021-05-21 20:00:37,841 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [833438317] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:00:37,841 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:00:37,841 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:00:37,841 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1912150793] [2021-05-21 20:00:37,841 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-21 20:00:37,841 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:00:37,841 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-21 20:00:37,841 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-05-21 20:00:37,842 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) [2021-05-21 20:00:37,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:00:37,962 INFO L93 Difference]: Finished difference Result 1511 states and 4128 transitions. [2021-05-21 20:00:37,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-21 20:00:37,962 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 [2021-05-21 20:00:37,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:00:37,963 INFO L225 Difference]: With dead ends: 1511 [2021-05-21 20:00:37,963 INFO L226 Difference]: Without dead ends: 1418 [2021-05-21 20:00:37,964 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 37.4ms TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-05-21 20:00:37,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1418 states. [2021-05-21 20:00:37,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1418 to 1275. [2021-05-21 20:00:37,974 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) [2021-05-21 20:00:37,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1275 states to 1275 states and 3517 transitions. [2021-05-21 20:00:37,976 INFO L78 Accepts]: Start accepts. Automaton has 1275 states and 3517 transitions. Word has length 26 [2021-05-21 20:00:37,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:00:37,976 INFO L482 AbstractCegarLoop]: Abstraction has 1275 states and 3517 transitions. [2021-05-21 20:00:37,976 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) [2021-05-21 20:00:37,976 INFO L276 IsEmpty]: Start isEmpty. Operand 1275 states and 3517 transitions. [2021-05-21 20:00:37,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 20:00:37,977 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:00:37,977 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:00:37,977 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable241 [2021-05-21 20:00:37,977 INFO L430 AbstractCegarLoop]: === Iteration 243 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 20:00:37,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:00:37,978 INFO L82 PathProgramCache]: Analyzing trace with hash 1266213110, now seen corresponding path program 241 times [2021-05-21 20:00:37,978 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:00:37,978 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1345620134] [2021-05-21 20:00:37,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:00:37,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:00:38,036 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:00:38,036 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:00:38,036 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1345620134] [2021-05-21 20:00:38,036 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1345620134] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:00:38,036 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:00:38,036 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-21 20:00:38,036 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [588824857] [2021-05-21 20:00:38,037 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:00:38,037 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:00:38,037 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:00:38,037 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:00:38,037 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) [2021-05-21 20:00:38,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:00:38,184 INFO L93 Difference]: Finished difference Result 1582 states and 4293 transitions. [2021-05-21 20:00:38,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:00:38,185 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-05-21 20:00:38,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:00:38,186 INFO L225 Difference]: With dead ends: 1582 [2021-05-21 20:00:38,186 INFO L226 Difference]: Without dead ends: 1369 [2021-05-21 20:00:38,186 INFO L777 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 [2021-05-21 20:00:38,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1369 states. [2021-05-21 20:00:38,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1369 to 1275. [2021-05-21 20:00:38,197 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) [2021-05-21 20:00:38,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1275 states to 1275 states and 3491 transitions. [2021-05-21 20:00:38,198 INFO L78 Accepts]: Start accepts. Automaton has 1275 states and 3491 transitions. Word has length 26 [2021-05-21 20:00:38,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:00:38,198 INFO L482 AbstractCegarLoop]: Abstraction has 1275 states and 3491 transitions. [2021-05-21 20:00:38,198 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:00:38,198 INFO L276 IsEmpty]: Start isEmpty. Operand 1275 states and 3491 transitions. [2021-05-21 20:00:38,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 20:00:38,199 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:00:38,199 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:00:38,200 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable242 [2021-05-21 20:00:38,200 INFO L430 AbstractCegarLoop]: === Iteration 244 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 20:00:38,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:00:38,200 INFO L82 PathProgramCache]: Analyzing trace with hash -1140650728, now seen corresponding path program 242 times [2021-05-21 20:00:38,200 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:00:38,200 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2094482732] [2021-05-21 20:00:38,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:00:38,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:00:38,267 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:00:38,267 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:00:38,267 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2094482732] [2021-05-21 20:00:38,267 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2094482732] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:00:38,268 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:00:38,268 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-21 20:00:38,268 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1755413325] [2021-05-21 20:00:38,268 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:00:38,268 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:00:38,268 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:00:38,268 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:00:38,268 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) [2021-05-21 20:00:38,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:00:38,420 INFO L93 Difference]: Finished difference Result 1460 states and 3935 transitions. [2021-05-21 20:00:38,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:00:38,420 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-05-21 20:00:38,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:00:38,421 INFO L225 Difference]: With dead ends: 1460 [2021-05-21 20:00:38,421 INFO L226 Difference]: Without dead ends: 1367 [2021-05-21 20:00:38,421 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 60.6ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:00:38,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1367 states. [2021-05-21 20:00:38,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1367 to 1275. [2021-05-21 20:00:38,432 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) [2021-05-21 20:00:38,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1275 states to 1275 states and 3487 transitions. [2021-05-21 20:00:38,433 INFO L78 Accepts]: Start accepts. Automaton has 1275 states and 3487 transitions. Word has length 26 [2021-05-21 20:00:38,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:00:38,434 INFO L482 AbstractCegarLoop]: Abstraction has 1275 states and 3487 transitions. [2021-05-21 20:00:38,434 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:00:38,434 INFO L276 IsEmpty]: Start isEmpty. Operand 1275 states and 3487 transitions. [2021-05-21 20:00:38,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 20:00:38,435 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:00:38,435 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:00:38,435 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable243 [2021-05-21 20:00:38,435 INFO L430 AbstractCegarLoop]: === Iteration 245 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 20:00:38,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:00:38,435 INFO L82 PathProgramCache]: Analyzing trace with hash -271206120, now seen corresponding path program 243 times [2021-05-21 20:00:38,435 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:00:38,435 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1838629320] [2021-05-21 20:00:38,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:00:38,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:00:38,487 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:00:38,487 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:00:38,487 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1838629320] [2021-05-21 20:00:38,488 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1838629320] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:00:38,488 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:00:38,488 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-21 20:00:38,488 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1186313148] [2021-05-21 20:00:38,488 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:00:38,488 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:00:38,488 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:00:38,488 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:00:38,488 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) [2021-05-21 20:00:38,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:00:38,642 INFO L93 Difference]: Finished difference Result 1471 states and 3964 transitions. [2021-05-21 20:00:38,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:00:38,643 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-05-21 20:00:38,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:00:38,644 INFO L225 Difference]: With dead ends: 1471 [2021-05-21 20:00:38,644 INFO L226 Difference]: Without dead ends: 1362 [2021-05-21 20:00:38,644 INFO L777 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 [2021-05-21 20:00:38,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1362 states. [2021-05-21 20:00:38,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1362 to 1290. [2021-05-21 20:00:38,655 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) [2021-05-21 20:00:38,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1290 states to 1290 states and 3523 transitions. [2021-05-21 20:00:38,656 INFO L78 Accepts]: Start accepts. Automaton has 1290 states and 3523 transitions. Word has length 26 [2021-05-21 20:00:38,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:00:38,656 INFO L482 AbstractCegarLoop]: Abstraction has 1290 states and 3523 transitions. [2021-05-21 20:00:38,656 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:00:38,657 INFO L276 IsEmpty]: Start isEmpty. Operand 1290 states and 3523 transitions. [2021-05-21 20:00:38,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 20:00:38,658 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:00:38,658 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:00:38,658 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable244 [2021-05-21 20:00:38,658 INFO L430 AbstractCegarLoop]: === Iteration 246 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 20:00:38,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:00:38,658 INFO L82 PathProgramCache]: Analyzing trace with hash 1899862930, now seen corresponding path program 244 times [2021-05-21 20:00:38,658 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:00:38,658 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2028331961] [2021-05-21 20:00:38,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:00:38,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:00:38,711 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:00:38,711 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:00:38,711 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2028331961] [2021-05-21 20:00:38,711 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2028331961] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:00:38,711 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:00:38,711 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-21 20:00:38,711 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1589576893] [2021-05-21 20:00:38,711 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:00:38,712 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:00:38,712 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:00:38,712 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:00:38,712 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) [2021-05-21 20:00:38,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:00:38,865 INFO L93 Difference]: Finished difference Result 1456 states and 3922 transitions. [2021-05-21 20:00:38,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:00:38,865 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-05-21 20:00:38,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:00:38,866 INFO L225 Difference]: With dead ends: 1456 [2021-05-21 20:00:38,866 INFO L226 Difference]: Without dead ends: 1294 [2021-05-21 20:00:38,866 INFO L777 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 [2021-05-21 20:00:38,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1294 states. [2021-05-21 20:00:38,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1294 to 1245. [2021-05-21 20:00:38,877 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) [2021-05-21 20:00:38,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1245 states to 1245 states and 3411 transitions. [2021-05-21 20:00:38,878 INFO L78 Accepts]: Start accepts. Automaton has 1245 states and 3411 transitions. Word has length 26 [2021-05-21 20:00:38,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:00:38,878 INFO L482 AbstractCegarLoop]: Abstraction has 1245 states and 3411 transitions. [2021-05-21 20:00:38,878 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:00:38,878 INFO L276 IsEmpty]: Start isEmpty. Operand 1245 states and 3411 transitions. [2021-05-21 20:00:38,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 20:00:38,879 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:00:38,879 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:00:38,880 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable245 [2021-05-21 20:00:38,880 INFO L430 AbstractCegarLoop]: === Iteration 247 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 20:00:38,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:00:38,880 INFO L82 PathProgramCache]: Analyzing trace with hash 760808728, now seen corresponding path program 245 times [2021-05-21 20:00:38,880 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:00:38,880 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1091798048] [2021-05-21 20:00:38,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:00:38,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:00:38,926 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:00:38,927 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:00:38,927 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1091798048] [2021-05-21 20:00:38,927 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1091798048] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:00:38,927 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:00:38,927 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:00:38,927 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [350310540] [2021-05-21 20:00:38,927 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-21 20:00:38,927 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:00:38,927 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-21 20:00:38,927 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-05-21 20:00:38,927 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) [2021-05-21 20:00:39,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:00:39,060 INFO L93 Difference]: Finished difference Result 1475 states and 3997 transitions. [2021-05-21 20:00:39,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-21 20:00:39,060 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 [2021-05-21 20:00:39,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:00:39,062 INFO L225 Difference]: With dead ends: 1475 [2021-05-21 20:00:39,062 INFO L226 Difference]: Without dead ends: 1320 [2021-05-21 20:00:39,062 INFO L777 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 [2021-05-21 20:00:39,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1320 states. [2021-05-21 20:00:39,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1320 to 1284. [2021-05-21 20:00:39,072 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) [2021-05-21 20:00:39,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1284 states to 1284 states and 3492 transitions. [2021-05-21 20:00:39,074 INFO L78 Accepts]: Start accepts. Automaton has 1284 states and 3492 transitions. Word has length 26 [2021-05-21 20:00:39,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:00:39,074 INFO L482 AbstractCegarLoop]: Abstraction has 1284 states and 3492 transitions. [2021-05-21 20:00:39,074 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) [2021-05-21 20:00:39,074 INFO L276 IsEmpty]: Start isEmpty. Operand 1284 states and 3492 transitions. [2021-05-21 20:00:39,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 20:00:39,075 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:00:39,075 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:00:39,075 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable246 [2021-05-21 20:00:39,075 INFO L430 AbstractCegarLoop]: === Iteration 248 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 20:00:39,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:00:39,075 INFO L82 PathProgramCache]: Analyzing trace with hash -98776266, now seen corresponding path program 246 times [2021-05-21 20:00:39,075 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:00:39,076 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1600451821] [2021-05-21 20:00:39,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:00:39,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:00:39,135 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:00:39,135 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:00:39,135 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1600451821] [2021-05-21 20:00:39,135 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1600451821] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:00:39,135 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:00:39,135 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-21 20:00:39,135 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [254470710] [2021-05-21 20:00:39,135 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:00:39,135 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:00:39,135 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:00:39,135 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:00:39,136 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) [2021-05-21 20:00:39,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:00:39,288 INFO L93 Difference]: Finished difference Result 1451 states and 3899 transitions. [2021-05-21 20:00:39,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:00:39,288 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 [2021-05-21 20:00:39,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:00:39,290 INFO L225 Difference]: With dead ends: 1451 [2021-05-21 20:00:39,290 INFO L226 Difference]: Without dead ends: 1310 [2021-05-21 20:00:39,290 INFO L777 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 [2021-05-21 20:00:39,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1310 states. [2021-05-21 20:00:39,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1310 to 1258. [2021-05-21 20:00:39,300 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) [2021-05-21 20:00:39,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1258 states to 1258 states and 3420 transitions. [2021-05-21 20:00:39,301 INFO L78 Accepts]: Start accepts. Automaton has 1258 states and 3420 transitions. Word has length 26 [2021-05-21 20:00:39,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:00:39,302 INFO L482 AbstractCegarLoop]: Abstraction has 1258 states and 3420 transitions. [2021-05-21 20:00:39,302 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:00:39,302 INFO L276 IsEmpty]: Start isEmpty. Operand 1258 states and 3420 transitions. [2021-05-21 20:00:39,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 20:00:39,303 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:00:39,303 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:00:39,303 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable247 [2021-05-21 20:00:39,303 INFO L430 AbstractCegarLoop]: === Iteration 249 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 20:00:39,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:00:39,303 INFO L82 PathProgramCache]: Analyzing trace with hash -1221048170, now seen corresponding path program 247 times [2021-05-21 20:00:39,303 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:00:39,303 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [959325391] [2021-05-21 20:00:39,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:00:39,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:00:39,356 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:00:39,356 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:00:39,356 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [959325391] [2021-05-21 20:00:39,356 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [959325391] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:00:39,356 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:00:39,356 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-21 20:00:39,356 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1846517924] [2021-05-21 20:00:39,356 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:00:39,356 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:00:39,357 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:00:39,357 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:00:39,357 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) [2021-05-21 20:00:39,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:00:39,520 INFO L93 Difference]: Finished difference Result 1416 states and 3802 transitions. [2021-05-21 20:00:39,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:00:39,520 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 [2021-05-21 20:00:39,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:00:39,521 INFO L225 Difference]: With dead ends: 1416 [2021-05-21 20:00:39,522 INFO L226 Difference]: Without dead ends: 1335 [2021-05-21 20:00:39,522 INFO L777 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 [2021-05-21 20:00:39,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1335 states. [2021-05-21 20:00:39,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1335 to 1260. [2021-05-21 20:00:39,532 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) [2021-05-21 20:00:39,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1260 states to 1260 states and 3427 transitions. [2021-05-21 20:00:39,533 INFO L78 Accepts]: Start accepts. Automaton has 1260 states and 3427 transitions. Word has length 26 [2021-05-21 20:00:39,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:00:39,533 INFO L482 AbstractCegarLoop]: Abstraction has 1260 states and 3427 transitions. [2021-05-21 20:00:39,533 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:00:39,533 INFO L276 IsEmpty]: Start isEmpty. Operand 1260 states and 3427 transitions. [2021-05-21 20:00:39,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 20:00:39,534 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:00:39,534 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:00:39,534 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable248 [2021-05-21 20:00:39,535 INFO L430 AbstractCegarLoop]: === Iteration 250 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 20:00:39,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:00:39,535 INFO L82 PathProgramCache]: Analyzing trace with hash -351603562, now seen corresponding path program 248 times [2021-05-21 20:00:39,535 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:00:39,535 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1990528794] [2021-05-21 20:00:39,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:00:39,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:00:39,588 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:00:39,588 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:00:39,588 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1990528794] [2021-05-21 20:00:39,588 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1990528794] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:00:39,588 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:00:39,588 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-21 20:00:39,588 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [409722968] [2021-05-21 20:00:39,588 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:00:39,588 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:00:39,588 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:00:39,588 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:00:39,588 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) [2021-05-21 20:00:39,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:00:39,750 INFO L93 Difference]: Finished difference Result 1422 states and 3809 transitions. [2021-05-21 20:00:39,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:00:39,750 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-05-21 20:00:39,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:00:39,752 INFO L225 Difference]: With dead ends: 1422 [2021-05-21 20:00:39,752 INFO L226 Difference]: Without dead ends: 1302 [2021-05-21 20:00:39,752 INFO L777 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 [2021-05-21 20:00:39,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1302 states. [2021-05-21 20:00:39,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1302 to 1256. [2021-05-21 20:00:39,762 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) [2021-05-21 20:00:39,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1256 states to 1256 states and 3414 transitions. [2021-05-21 20:00:39,764 INFO L78 Accepts]: Start accepts. Automaton has 1256 states and 3414 transitions. Word has length 26 [2021-05-21 20:00:39,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:00:39,764 INFO L482 AbstractCegarLoop]: Abstraction has 1256 states and 3414 transitions. [2021-05-21 20:00:39,764 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) [2021-05-21 20:00:39,764 INFO L276 IsEmpty]: Start isEmpty. Operand 1256 states and 3414 transitions. [2021-05-21 20:00:39,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 20:00:39,765 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:00:39,765 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:00:39,765 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable249 [2021-05-21 20:00:39,765 INFO L430 AbstractCegarLoop]: === Iteration 251 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 20:00:39,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:00:39,766 INFO L82 PathProgramCache]: Analyzing trace with hash -1820314792, now seen corresponding path program 249 times [2021-05-21 20:00:39,766 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:00:39,766 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1406713035] [2021-05-21 20:00:39,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:00:39,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:00:39,826 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:00:39,826 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:00:39,826 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1406713035] [2021-05-21 20:00:39,826 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1406713035] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:00:39,826 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:00:39,826 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-21 20:00:39,826 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1543258799] [2021-05-21 20:00:39,827 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:00:39,827 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:00:39,827 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:00:39,827 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:00:39,827 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) [2021-05-21 20:00:39,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:00:39,986 INFO L93 Difference]: Finished difference Result 1383 states and 3716 transitions. [2021-05-21 20:00:39,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:00:39,986 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-05-21 20:00:39,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:00:39,988 INFO L225 Difference]: With dead ends: 1383 [2021-05-21 20:00:39,988 INFO L226 Difference]: Without dead ends: 1292 [2021-05-21 20:00:39,988 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 52.9ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:00:39,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1292 states. [2021-05-21 20:00:39,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1292 to 1244. [2021-05-21 20:00:39,998 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) [2021-05-21 20:00:39,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1244 states to 1244 states and 3391 transitions. [2021-05-21 20:00:39,999 INFO L78 Accepts]: Start accepts. Automaton has 1244 states and 3391 transitions. Word has length 26 [2021-05-21 20:00:39,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:00:39,999 INFO L482 AbstractCegarLoop]: Abstraction has 1244 states and 3391 transitions. [2021-05-21 20:00:39,999 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:00:39,999 INFO L276 IsEmpty]: Start isEmpty. Operand 1244 states and 3391 transitions. [2021-05-21 20:00:40,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 20:00:40,000 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:00:40,000 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:00:40,001 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable250 [2021-05-21 20:00:40,001 INFO L430 AbstractCegarLoop]: === Iteration 252 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 20:00:40,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:00:40,001 INFO L82 PathProgramCache]: Analyzing trace with hash -413150982, now seen corresponding path program 250 times [2021-05-21 20:00:40,001 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:00:40,001 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1650758165] [2021-05-21 20:00:40,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:00:40,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:00:40,046 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:00:40,046 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:00:40,046 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1650758165] [2021-05-21 20:00:40,046 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1650758165] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:00:40,046 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:00:40,046 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:00:40,046 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1530838934] [2021-05-21 20:00:40,046 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-21 20:00:40,046 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:00:40,046 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-21 20:00:40,046 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-05-21 20:00:40,047 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) [2021-05-21 20:00:40,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:00:40,169 INFO L93 Difference]: Finished difference Result 1483 states and 4005 transitions. [2021-05-21 20:00:40,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-21 20:00:40,170 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 [2021-05-21 20:00:40,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:00:40,171 INFO L225 Difference]: With dead ends: 1483 [2021-05-21 20:00:40,171 INFO L226 Difference]: Without dead ends: 1331 [2021-05-21 20:00:40,171 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 37.8ms TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-05-21 20:00:40,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1331 states. [2021-05-21 20:00:40,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1331 to 1273. [2021-05-21 20:00:40,181 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) [2021-05-21 20:00:40,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1273 states to 1273 states and 3449 transitions. [2021-05-21 20:00:40,183 INFO L78 Accepts]: Start accepts. Automaton has 1273 states and 3449 transitions. Word has length 26 [2021-05-21 20:00:40,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:00:40,183 INFO L482 AbstractCegarLoop]: Abstraction has 1273 states and 3449 transitions. [2021-05-21 20:00:40,183 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) [2021-05-21 20:00:40,183 INFO L276 IsEmpty]: Start isEmpty. Operand 1273 states and 3449 transitions. [2021-05-21 20:00:40,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 20:00:40,184 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:00:40,184 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:00:40,184 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable251 [2021-05-21 20:00:40,184 INFO L430 AbstractCegarLoop]: === Iteration 253 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 20:00:40,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:00:40,184 INFO L82 PathProgramCache]: Analyzing trace with hash -1272735976, now seen corresponding path program 251 times [2021-05-21 20:00:40,185 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:00:40,185 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2139864200] [2021-05-21 20:00:40,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:00:40,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:00:40,237 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:00:40,237 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:00:40,238 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2139864200] [2021-05-21 20:00:40,238 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2139864200] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:00:40,238 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:00:40,238 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-21 20:00:40,238 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574394477] [2021-05-21 20:00:40,238 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:00:40,238 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:00:40,238 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:00:40,238 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:00:40,238 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) [2021-05-21 20:00:40,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:00:40,390 INFO L93 Difference]: Finished difference Result 1455 states and 3899 transitions. [2021-05-21 20:00:40,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:00:40,390 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-05-21 20:00:40,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:00:40,391 INFO L225 Difference]: With dead ends: 1455 [2021-05-21 20:00:40,391 INFO L226 Difference]: Without dead ends: 1330 [2021-05-21 20:00:40,391 INFO L777 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 [2021-05-21 20:00:40,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1330 states. [2021-05-21 20:00:40,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1330 to 1247. [2021-05-21 20:00:40,402 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) [2021-05-21 20:00:40,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1247 states to 1247 states and 3387 transitions. [2021-05-21 20:00:40,403 INFO L78 Accepts]: Start accepts. Automaton has 1247 states and 3387 transitions. Word has length 26 [2021-05-21 20:00:40,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:00:40,403 INFO L482 AbstractCegarLoop]: Abstraction has 1247 states and 3387 transitions. [2021-05-21 20:00:40,403 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:00:40,403 INFO L276 IsEmpty]: Start isEmpty. Operand 1247 states and 3387 transitions. [2021-05-21 20:00:40,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 20:00:40,404 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:00:40,404 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:00:40,404 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable252 [2021-05-21 20:00:40,405 INFO L430 AbstractCegarLoop]: === Iteration 254 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 20:00:40,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:00:40,405 INFO L82 PathProgramCache]: Analyzing trace with hash -630959526, now seen corresponding path program 252 times [2021-05-21 20:00:40,405 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:00:40,405 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1377542715] [2021-05-21 20:00:40,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:00:40,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:00:40,458 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:00:40,458 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:00:40,458 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1377542715] [2021-05-21 20:00:40,458 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1377542715] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:00:40,458 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:00:40,458 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-21 20:00:40,458 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [264135468] [2021-05-21 20:00:40,458 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:00:40,458 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:00:40,458 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:00:40,458 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:00:40,459 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) [2021-05-21 20:00:40,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:00:40,617 INFO L93 Difference]: Finished difference Result 1414 states and 3792 transitions. [2021-05-21 20:00:40,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:00:40,618 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-05-21 20:00:40,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:00:40,619 INFO L225 Difference]: With dead ends: 1414 [2021-05-21 20:00:40,619 INFO L226 Difference]: Without dead ends: 1315 [2021-05-21 20:00:40,619 INFO L777 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 [2021-05-21 20:00:40,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1315 states. [2021-05-21 20:00:40,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1315 to 1253. [2021-05-21 20:00:40,629 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) [2021-05-21 20:00:40,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1253 states to 1253 states and 3397 transitions. [2021-05-21 20:00:40,631 INFO L78 Accepts]: Start accepts. Automaton has 1253 states and 3397 transitions. Word has length 26 [2021-05-21 20:00:40,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:00:40,631 INFO L482 AbstractCegarLoop]: Abstraction has 1253 states and 3397 transitions. [2021-05-21 20:00:40,631 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) [2021-05-21 20:00:40,631 INFO L276 IsEmpty]: Start isEmpty. Operand 1253 states and 3397 transitions. [2021-05-21 20:00:40,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 20:00:40,632 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:00:40,632 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:00:40,632 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable253 [2021-05-21 20:00:40,632 INFO L430 AbstractCegarLoop]: === Iteration 255 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 20:00:40,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:00:40,633 INFO L82 PathProgramCache]: Analyzing trace with hash -1539210662, now seen corresponding path program 253 times [2021-05-21 20:00:40,633 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:00:40,633 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1535882564] [2021-05-21 20:00:40,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:00:40,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:00:40,686 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:00:40,687 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:00:40,687 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1535882564] [2021-05-21 20:00:40,687 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1535882564] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:00:40,687 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:00:40,687 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-21 20:00:40,687 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1425287668] [2021-05-21 20:00:40,687 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:00:40,687 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:00:40,687 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:00:40,687 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:00:40,687 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) [2021-05-21 20:00:40,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:00:40,839 INFO L93 Difference]: Finished difference Result 1410 states and 3784 transitions. [2021-05-21 20:00:40,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:00:40,839 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-05-21 20:00:40,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:00:40,841 INFO L225 Difference]: With dead ends: 1410 [2021-05-21 20:00:40,841 INFO L226 Difference]: Without dead ends: 1329 [2021-05-21 20:00:40,841 INFO L777 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 [2021-05-21 20:00:40,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1329 states. [2021-05-21 20:00:40,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1329 to 1256. [2021-05-21 20:00:40,856 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) [2021-05-21 20:00:40,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1256 states to 1256 states and 3408 transitions. [2021-05-21 20:00:40,858 INFO L78 Accepts]: Start accepts. Automaton has 1256 states and 3408 transitions. Word has length 26 [2021-05-21 20:00:40,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:00:40,858 INFO L482 AbstractCegarLoop]: Abstraction has 1256 states and 3408 transitions. [2021-05-21 20:00:40,858 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:00:40,858 INFO L276 IsEmpty]: Start isEmpty. Operand 1256 states and 3408 transitions. [2021-05-21 20:00:40,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 20:00:40,859 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:00:40,859 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:00:40,859 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable254 [2021-05-21 20:00:40,859 INFO L430 AbstractCegarLoop]: === Iteration 256 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 20:00:40,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:00:40,859 INFO L82 PathProgramCache]: Analyzing trace with hash -669766054, now seen corresponding path program 254 times [2021-05-21 20:00:40,859 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:00:40,859 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1719809416] [2021-05-21 20:00:40,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:00:40,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:00:40,913 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:00:40,913 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:00:40,913 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1719809416] [2021-05-21 20:00:40,913 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1719809416] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:00:40,913 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:00:40,914 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-21 20:00:40,914 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [805297180] [2021-05-21 20:00:40,914 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:00:40,914 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:00:40,914 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:00:40,914 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:00:40,914 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) [2021-05-21 20:00:41,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:00:41,071 INFO L93 Difference]: Finished difference Result 1435 states and 3835 transitions. [2021-05-21 20:00:41,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:00:41,072 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-05-21 20:00:41,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:00:41,074 INFO L225 Difference]: With dead ends: 1435 [2021-05-21 20:00:41,074 INFO L226 Difference]: Without dead ends: 1329 [2021-05-21 20:00:41,074 INFO L777 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 [2021-05-21 20:00:41,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1329 states. [2021-05-21 20:00:41,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1329 to 1253. [2021-05-21 20:00:41,084 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) [2021-05-21 20:00:41,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1253 states to 1253 states and 3397 transitions. [2021-05-21 20:00:41,086 INFO L78 Accepts]: Start accepts. Automaton has 1253 states and 3397 transitions. Word has length 26 [2021-05-21 20:00:41,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:00:41,086 INFO L482 AbstractCegarLoop]: Abstraction has 1253 states and 3397 transitions. [2021-05-21 20:00:41,086 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) [2021-05-21 20:00:41,086 INFO L276 IsEmpty]: Start isEmpty. Operand 1253 states and 3397 transitions. [2021-05-21 20:00:41,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 20:00:41,087 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:00:41,087 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:00:41,087 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable255 [2021-05-21 20:00:41,087 INFO L430 AbstractCegarLoop]: === Iteration 257 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 20:00:41,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:00:41,087 INFO L82 PathProgramCache]: Analyzing trace with hash -618634696, now seen corresponding path program 255 times [2021-05-21 20:00:41,087 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:00:41,088 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [225749352] [2021-05-21 20:00:41,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:00:41,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:00:41,145 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:00:41,145 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:00:41,145 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [225749352] [2021-05-21 20:00:41,145 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [225749352] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:00:41,145 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:00:41,145 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-21 20:00:41,145 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1606941202] [2021-05-21 20:00:41,145 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:00:41,145 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:00:41,145 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:00:41,146 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:00:41,146 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) [2021-05-21 20:00:41,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:00:41,298 INFO L93 Difference]: Finished difference Result 1387 states and 3720 transitions. [2021-05-21 20:00:41,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:00:41,299 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-05-21 20:00:41,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:00:41,300 INFO L225 Difference]: With dead ends: 1387 [2021-05-21 20:00:41,300 INFO L226 Difference]: Without dead ends: 1291 [2021-05-21 20:00:41,300 INFO L777 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 [2021-05-21 20:00:41,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1291 states. [2021-05-21 20:00:41,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1291 to 1238. [2021-05-21 20:00:41,310 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) [2021-05-21 20:00:41,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1238 states to 1238 states and 3364 transitions. [2021-05-21 20:00:41,312 INFO L78 Accepts]: Start accepts. Automaton has 1238 states and 3364 transitions. Word has length 26 [2021-05-21 20:00:41,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:00:41,312 INFO L482 AbstractCegarLoop]: Abstraction has 1238 states and 3364 transitions. [2021-05-21 20:00:41,312 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:00:41,312 INFO L276 IsEmpty]: Start isEmpty. Operand 1238 states and 3364 transitions. [2021-05-21 20:00:41,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 20:00:41,313 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:00:41,313 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:00:41,313 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable256 [2021-05-21 20:00:41,313 INFO L430 AbstractCegarLoop]: === Iteration 258 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 20:00:41,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:00:41,314 INFO L82 PathProgramCache]: Analyzing trace with hash -1127571916, now seen corresponding path program 256 times [2021-05-21 20:00:41,314 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:00:41,314 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1106264667] [2021-05-21 20:00:41,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:00:41,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:00:41,363 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:00:41,363 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:00:41,363 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1106264667] [2021-05-21 20:00:41,363 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1106264667] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:00:41,363 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:00:41,363 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:00:41,363 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1872519050] [2021-05-21 20:00:41,363 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-21 20:00:41,363 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:00:41,364 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-21 20:00:41,364 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-05-21 20:00:41,364 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) [2021-05-21 20:00:41,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:00:41,485 INFO L93 Difference]: Finished difference Result 1442 states and 3911 transitions. [2021-05-21 20:00:41,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-21 20:00:41,485 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 [2021-05-21 20:00:41,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:00:41,486 INFO L225 Difference]: With dead ends: 1442 [2021-05-21 20:00:41,487 INFO L226 Difference]: Without dead ends: 1357 [2021-05-21 20:00:41,487 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 37.8ms TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-05-21 20:00:41,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1357 states. [2021-05-21 20:00:41,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1357 to 1252. [2021-05-21 20:00:41,497 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) [2021-05-21 20:00:41,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1252 states to 1252 states and 3402 transitions. [2021-05-21 20:00:41,499 INFO L78 Accepts]: Start accepts. Automaton has 1252 states and 3402 transitions. Word has length 26 [2021-05-21 20:00:41,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:00:41,499 INFO L482 AbstractCegarLoop]: Abstraction has 1252 states and 3402 transitions. [2021-05-21 20:00:41,499 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) [2021-05-21 20:00:41,499 INFO L276 IsEmpty]: Start isEmpty. Operand 1252 states and 3402 transitions. [2021-05-21 20:00:41,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 20:00:41,500 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:00:41,500 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:00:41,500 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable257 [2021-05-21 20:00:41,500 INFO L430 AbstractCegarLoop]: === Iteration 259 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 20:00:41,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:00:41,500 INFO L82 PathProgramCache]: Analyzing trace with hash 1598466838, now seen corresponding path program 257 times [2021-05-21 20:00:41,501 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:00:41,501 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1636000922] [2021-05-21 20:00:41,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:00:41,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:00:41,545 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:00:41,545 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:00:41,545 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1636000922] [2021-05-21 20:00:41,545 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1636000922] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:00:41,545 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:00:41,545 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:00:41,546 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [222861809] [2021-05-21 20:00:41,546 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-21 20:00:41,546 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:00:41,546 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-21 20:00:41,546 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-05-21 20:00:41,546 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) [2021-05-21 20:00:41,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:00:41,671 INFO L93 Difference]: Finished difference Result 1475 states and 4004 transitions. [2021-05-21 20:00:41,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-21 20:00:41,671 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 [2021-05-21 20:00:41,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:00:41,673 INFO L225 Difference]: With dead ends: 1475 [2021-05-21 20:00:41,673 INFO L226 Difference]: Without dead ends: 1382 [2021-05-21 20:00:41,673 INFO L777 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 [2021-05-21 20:00:41,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1382 states. [2021-05-21 20:00:41,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1382 to 1238. [2021-05-21 20:00:41,683 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) [2021-05-21 20:00:41,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1238 states to 1238 states and 3362 transitions. [2021-05-21 20:00:41,685 INFO L78 Accepts]: Start accepts. Automaton has 1238 states and 3362 transitions. Word has length 26 [2021-05-21 20:00:41,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:00:41,685 INFO L482 AbstractCegarLoop]: Abstraction has 1238 states and 3362 transitions. [2021-05-21 20:00:41,685 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) [2021-05-21 20:00:41,685 INFO L276 IsEmpty]: Start isEmpty. Operand 1238 states and 3362 transitions. [2021-05-21 20:00:41,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 20:00:41,686 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:00:41,686 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:00:41,686 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable258 [2021-05-21 20:00:41,686 INFO L430 AbstractCegarLoop]: === Iteration 260 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 20:00:41,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:00:41,686 INFO L82 PathProgramCache]: Analyzing trace with hash 1852151958, now seen corresponding path program 258 times [2021-05-21 20:00:41,686 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:00:41,686 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [452546416] [2021-05-21 20:00:41,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:00:41,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:00:41,742 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:00:41,742 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:00:41,742 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [452546416] [2021-05-21 20:00:41,742 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [452546416] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:00:41,742 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:00:41,742 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-21 20:00:41,743 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1574984952] [2021-05-21 20:00:41,743 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:00:41,743 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:00:41,743 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:00:41,743 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:00:41,743 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) [2021-05-21 20:00:41,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:00:41,898 INFO L93 Difference]: Finished difference Result 1375 states and 3707 transitions. [2021-05-21 20:00:41,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:00:41,898 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-05-21 20:00:41,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:00:41,899 INFO L225 Difference]: With dead ends: 1375 [2021-05-21 20:00:41,899 INFO L226 Difference]: Without dead ends: 1294 [2021-05-21 20:00:41,899 INFO L777 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 [2021-05-21 20:00:41,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1294 states. [2021-05-21 20:00:41,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1294 to 1242. [2021-05-21 20:00:41,910 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) [2021-05-21 20:00:41,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1242 states to 1242 states and 3377 transitions. [2021-05-21 20:00:41,911 INFO L78 Accepts]: Start accepts. Automaton has 1242 states and 3377 transitions. Word has length 26 [2021-05-21 20:00:41,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:00:41,911 INFO L482 AbstractCegarLoop]: Abstraction has 1242 states and 3377 transitions. [2021-05-21 20:00:41,911 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) [2021-05-21 20:00:41,911 INFO L276 IsEmpty]: Start isEmpty. Operand 1242 states and 3377 transitions. [2021-05-21 20:00:41,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 20:00:41,912 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:00:41,912 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:00:41,912 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable259 [2021-05-21 20:00:41,912 INFO L430 AbstractCegarLoop]: === Iteration 261 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 20:00:41,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:00:41,913 INFO L82 PathProgramCache]: Analyzing trace with hash -1573370730, now seen corresponding path program 259 times [2021-05-21 20:00:41,913 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:00:41,913 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [464141137] [2021-05-21 20:00:41,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:00:41,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:00:41,967 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:00:41,967 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:00:41,967 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [464141137] [2021-05-21 20:00:41,967 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [464141137] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:00:41,967 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:00:41,967 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-21 20:00:41,967 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [145738292] [2021-05-21 20:00:41,967 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:00:41,967 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:00:41,967 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:00:41,967 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:00:41,967 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) [2021-05-21 20:00:42,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:00:42,120 INFO L93 Difference]: Finished difference Result 1385 states and 3725 transitions. [2021-05-21 20:00:42,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:00:42,120 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-05-21 20:00:42,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:00:42,122 INFO L225 Difference]: With dead ends: 1385 [2021-05-21 20:00:42,122 INFO L226 Difference]: Without dead ends: 1288 [2021-05-21 20:00:42,122 INFO L777 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 [2021-05-21 20:00:42,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1288 states. [2021-05-21 20:00:42,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1288 to 1243. [2021-05-21 20:00:42,132 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) [2021-05-21 20:00:42,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1243 states to 1243 states and 3379 transitions. [2021-05-21 20:00:42,133 INFO L78 Accepts]: Start accepts. Automaton has 1243 states and 3379 transitions. Word has length 26 [2021-05-21 20:00:42,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:00:42,133 INFO L482 AbstractCegarLoop]: Abstraction has 1243 states and 3379 transitions. [2021-05-21 20:00:42,133 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:00:42,133 INFO L276 IsEmpty]: Start isEmpty. Operand 1243 states and 3379 transitions. [2021-05-21 20:00:42,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 20:00:42,134 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:00:42,134 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:00:42,135 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable260 [2021-05-21 20:00:42,135 INFO L430 AbstractCegarLoop]: === Iteration 262 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 20:00:42,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:00:42,135 INFO L82 PathProgramCache]: Analyzing trace with hash 1252885336, now seen corresponding path program 260 times [2021-05-21 20:00:42,135 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:00:42,135 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [587062641] [2021-05-21 20:00:42,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:00:42,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:00:42,188 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:00:42,188 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:00:42,188 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [587062641] [2021-05-21 20:00:42,188 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [587062641] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:00:42,188 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:00:42,188 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-21 20:00:42,188 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [795060705] [2021-05-21 20:00:42,189 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:00:42,189 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:00:42,189 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:00:42,189 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:00:42,189 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) [2021-05-21 20:00:42,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:00:42,353 INFO L93 Difference]: Finished difference Result 1363 states and 3672 transitions. [2021-05-21 20:00:42,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:00:42,353 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-05-21 20:00:42,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:00:42,354 INFO L225 Difference]: With dead ends: 1363 [2021-05-21 20:00:42,354 INFO L226 Difference]: Without dead ends: 1274 [2021-05-21 20:00:42,354 INFO L777 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 [2021-05-21 20:00:42,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1274 states. [2021-05-21 20:00:42,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1274 to 1247. [2021-05-21 20:00:42,364 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) [2021-05-21 20:00:42,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1247 states to 1247 states and 3390 transitions. [2021-05-21 20:00:42,365 INFO L78 Accepts]: Start accepts. Automaton has 1247 states and 3390 transitions. Word has length 26 [2021-05-21 20:00:42,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:00:42,366 INFO L482 AbstractCegarLoop]: Abstraction has 1247 states and 3390 transitions. [2021-05-21 20:00:42,366 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) [2021-05-21 20:00:42,366 INFO L276 IsEmpty]: Start isEmpty. Operand 1247 states and 3390 transitions. [2021-05-21 20:00:42,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 20:00:42,367 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:00:42,367 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:00:42,367 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable261 [2021-05-21 20:00:42,367 INFO L430 AbstractCegarLoop]: === Iteration 263 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 20:00:42,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:00:42,367 INFO L82 PathProgramCache]: Analyzing trace with hash 1266038908, now seen corresponding path program 261 times [2021-05-21 20:00:42,367 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:00:42,367 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1318166706] [2021-05-21 20:00:42,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:00:42,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:00:42,420 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:00:42,420 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:00:42,420 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1318166706] [2021-05-21 20:00:42,420 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1318166706] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:00:42,420 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:00:42,421 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-21 20:00:42,421 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [531515808] [2021-05-21 20:00:42,421 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:00:42,421 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:00:42,421 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:00:42,421 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:00:42,421 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) [2021-05-21 20:00:42,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:00:42,575 INFO L93 Difference]: Finished difference Result 1378 states and 3704 transitions. [2021-05-21 20:00:42,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:00:42,575 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 [2021-05-21 20:00:42,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:00:42,576 INFO L225 Difference]: With dead ends: 1378 [2021-05-21 20:00:42,576 INFO L226 Difference]: Without dead ends: 1269 [2021-05-21 20:00:42,576 INFO L777 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 [2021-05-21 20:00:42,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1269 states. [2021-05-21 20:00:42,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1269 to 1243. [2021-05-21 20:00:42,586 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) [2021-05-21 20:00:42,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1243 states to 1243 states and 3376 transitions. [2021-05-21 20:00:42,588 INFO L78 Accepts]: Start accepts. Automaton has 1243 states and 3376 transitions. Word has length 26 [2021-05-21 20:00:42,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:00:42,588 INFO L482 AbstractCegarLoop]: Abstraction has 1243 states and 3376 transitions. [2021-05-21 20:00:42,588 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) [2021-05-21 20:00:42,588 INFO L276 IsEmpty]: Start isEmpty. Operand 1243 states and 3376 transitions. [2021-05-21 20:00:42,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 20:00:42,589 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:00:42,589 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:00:42,589 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable262 [2021-05-21 20:00:42,589 INFO L430 AbstractCegarLoop]: === Iteration 264 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 20:00:42,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:00:42,589 INFO L82 PathProgramCache]: Analyzing trace with hash 1645343992, now seen corresponding path program 262 times [2021-05-21 20:00:42,589 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:00:42,589 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [507350390] [2021-05-21 20:00:42,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:00:42,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:00:42,642 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:00:42,643 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:00:42,643 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [507350390] [2021-05-21 20:00:42,643 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [507350390] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:00:42,643 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:00:42,643 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-21 20:00:42,643 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1459679233] [2021-05-21 20:00:42,643 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:00:42,643 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:00:42,643 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:00:42,643 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:00:42,643 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) [2021-05-21 20:00:42,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:00:42,799 INFO L93 Difference]: Finished difference Result 1384 states and 3725 transitions. [2021-05-21 20:00:42,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:00:42,799 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 [2021-05-21 20:00:42,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:00:42,800 INFO L225 Difference]: With dead ends: 1384 [2021-05-21 20:00:42,800 INFO L226 Difference]: Without dead ends: 1303 [2021-05-21 20:00:42,801 INFO L777 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 [2021-05-21 20:00:42,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1303 states. [2021-05-21 20:00:42,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1303 to 1245. [2021-05-21 20:00:42,810 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) [2021-05-21 20:00:42,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1245 states to 1245 states and 3383 transitions. [2021-05-21 20:00:42,812 INFO L78 Accepts]: Start accepts. Automaton has 1245 states and 3383 transitions. Word has length 26 [2021-05-21 20:00:42,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:00:42,812 INFO L482 AbstractCegarLoop]: Abstraction has 1245 states and 3383 transitions. [2021-05-21 20:00:42,812 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) [2021-05-21 20:00:42,812 INFO L276 IsEmpty]: Start isEmpty. Operand 1245 states and 3383 transitions. [2021-05-21 20:00:42,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 20:00:42,813 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:00:42,813 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:00:42,813 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable263 [2021-05-21 20:00:42,813 INFO L430 AbstractCegarLoop]: === Iteration 265 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 20:00:42,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:00:42,813 INFO L82 PathProgramCache]: Analyzing trace with hash -1780178696, now seen corresponding path program 263 times [2021-05-21 20:00:42,814 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:00:42,814 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [646669872] [2021-05-21 20:00:42,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:00:42,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:00:42,867 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:00:42,867 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:00:42,867 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [646669872] [2021-05-21 20:00:42,867 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [646669872] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:00:42,867 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:00:42,867 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-21 20:00:42,867 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [281717033] [2021-05-21 20:00:42,867 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:00:42,867 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:00:42,867 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:00:42,867 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:00:42,867 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) [2021-05-21 20:00:43,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:00:43,021 INFO L93 Difference]: Finished difference Result 1389 states and 3727 transitions. [2021-05-21 20:00:43,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:00:43,021 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-05-21 20:00:43,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:00:43,023 INFO L225 Difference]: With dead ends: 1389 [2021-05-21 20:00:43,023 INFO L226 Difference]: Without dead ends: 1292 [2021-05-21 20:00:43,023 INFO L777 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 [2021-05-21 20:00:43,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1292 states. [2021-05-21 20:00:43,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1292 to 1241. [2021-05-21 20:00:43,033 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) [2021-05-21 20:00:43,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1241 states to 1241 states and 3368 transitions. [2021-05-21 20:00:43,034 INFO L78 Accepts]: Start accepts. Automaton has 1241 states and 3368 transitions. Word has length 26 [2021-05-21 20:00:43,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:00:43,035 INFO L482 AbstractCegarLoop]: Abstraction has 1241 states and 3368 transitions. [2021-05-21 20:00:43,035 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:00:43,035 INFO L276 IsEmpty]: Start isEmpty. Operand 1241 states and 3368 transitions. [2021-05-21 20:00:43,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 20:00:43,036 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:00:43,036 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:00:43,036 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable264 [2021-05-21 20:00:43,036 INFO L430 AbstractCegarLoop]: === Iteration 266 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 20:00:43,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:00:43,036 INFO L82 PathProgramCache]: Analyzing trace with hash 140505174, now seen corresponding path program 264 times [2021-05-21 20:00:43,036 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:00:43,036 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1583374282] [2021-05-21 20:00:43,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:00:43,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:00:43,095 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:00:43,095 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:00:43,095 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1583374282] [2021-05-21 20:00:43,095 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1583374282] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:00:43,095 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:00:43,095 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-21 20:00:43,096 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [497893119] [2021-05-21 20:00:43,096 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:00:43,096 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:00:43,096 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:00:43,096 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:00:43,096 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) [2021-05-21 20:00:43,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:00:43,254 INFO L93 Difference]: Finished difference Result 1366 states and 3673 transitions. [2021-05-21 20:00:43,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:00:43,254 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-05-21 20:00:43,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:00:43,256 INFO L225 Difference]: With dead ends: 1366 [2021-05-21 20:00:43,256 INFO L226 Difference]: Without dead ends: 1279 [2021-05-21 20:00:43,256 INFO L777 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 [2021-05-21 20:00:43,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1279 states. [2021-05-21 20:00:43,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1279 to 1242. [2021-05-21 20:00:43,268 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) [2021-05-21 20:00:43,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1242 states to 1242 states and 3369 transitions. [2021-05-21 20:00:43,270 INFO L78 Accepts]: Start accepts. Automaton has 1242 states and 3369 transitions. Word has length 26 [2021-05-21 20:00:43,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:00:43,271 INFO L482 AbstractCegarLoop]: Abstraction has 1242 states and 3369 transitions. [2021-05-21 20:00:43,271 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:00:43,271 INFO L276 IsEmpty]: Start isEmpty. Operand 1242 states and 3369 transitions. [2021-05-21 20:00:43,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 20:00:43,272 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:00:43,272 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:00:43,272 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable265 [2021-05-21 20:00:43,272 INFO L430 AbstractCegarLoop]: === Iteration 267 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 20:00:43,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:00:43,273 INFO L82 PathProgramCache]: Analyzing trace with hash -2034524430, now seen corresponding path program 265 times [2021-05-21 20:00:43,273 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:00:43,273 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [536347830] [2021-05-21 20:00:43,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:00:43,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:00:43,336 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:00:43,336 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:00:43,336 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [536347830] [2021-05-21 20:00:43,336 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [536347830] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:00:43,336 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:00:43,336 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-21 20:00:43,336 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [670589079] [2021-05-21 20:00:43,337 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:00:43,337 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:00:43,337 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:00:43,337 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:00:43,337 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) [2021-05-21 20:00:43,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:00:43,493 INFO L93 Difference]: Finished difference Result 1386 states and 3719 transitions. [2021-05-21 20:00:43,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:00:43,493 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-05-21 20:00:43,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:00:43,494 INFO L225 Difference]: With dead ends: 1386 [2021-05-21 20:00:43,494 INFO L226 Difference]: Without dead ends: 1281 [2021-05-21 20:00:43,494 INFO L777 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 [2021-05-21 20:00:43,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1281 states. [2021-05-21 20:00:43,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1281 to 1236. [2021-05-21 20:00:43,504 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) [2021-05-21 20:00:43,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1236 states to 1236 states and 3354 transitions. [2021-05-21 20:00:43,505 INFO L78 Accepts]: Start accepts. Automaton has 1236 states and 3354 transitions. Word has length 26 [2021-05-21 20:00:43,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:00:43,505 INFO L482 AbstractCegarLoop]: Abstraction has 1236 states and 3354 transitions. [2021-05-21 20:00:43,506 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) [2021-05-21 20:00:43,506 INFO L276 IsEmpty]: Start isEmpty. Operand 1236 states and 3354 transitions. [2021-05-21 20:00:43,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 20:00:43,507 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:00:43,507 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:00:43,507 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable266 [2021-05-21 20:00:43,507 INFO L430 AbstractCegarLoop]: === Iteration 268 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 20:00:43,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:00:43,507 INFO L82 PathProgramCache]: Analyzing trace with hash -1529663814, now seen corresponding path program 266 times [2021-05-21 20:00:43,507 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:00:43,507 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1565237874] [2021-05-21 20:00:43,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:00:43,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:00:43,565 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:00:43,565 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:00:43,565 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1565237874] [2021-05-21 20:00:43,566 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1565237874] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:00:43,566 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:00:43,566 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-21 20:00:43,566 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [994393063] [2021-05-21 20:00:43,566 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:00:43,566 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:00:43,566 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:00:43,566 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:00:43,566 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) [2021-05-21 20:00:43,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:00:43,724 INFO L93 Difference]: Finished difference Result 1442 states and 3908 transitions. [2021-05-21 20:00:43,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:00:43,724 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-05-21 20:00:43,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:00:43,726 INFO L225 Difference]: With dead ends: 1442 [2021-05-21 20:00:43,726 INFO L226 Difference]: Without dead ends: 1351 [2021-05-21 20:00:43,726 INFO L777 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 [2021-05-21 20:00:43,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1351 states. [2021-05-21 20:00:43,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1351 to 1238. [2021-05-21 20:00:43,736 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) [2021-05-21 20:00:43,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1238 states to 1238 states and 3356 transitions. [2021-05-21 20:00:43,737 INFO L78 Accepts]: Start accepts. Automaton has 1238 states and 3356 transitions. Word has length 26 [2021-05-21 20:00:43,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:00:43,737 INFO L482 AbstractCegarLoop]: Abstraction has 1238 states and 3356 transitions. [2021-05-21 20:00:43,737 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) [2021-05-21 20:00:43,738 INFO L276 IsEmpty]: Start isEmpty. Operand 1238 states and 3356 transitions. [2021-05-21 20:00:43,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 20:00:43,739 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:00:43,739 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:00:43,739 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable267 [2021-05-21 20:00:43,739 INFO L430 AbstractCegarLoop]: === Iteration 269 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 20:00:43,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:00:43,739 INFO L82 PathProgramCache]: Analyzing trace with hash 1373158936, now seen corresponding path program 267 times [2021-05-21 20:00:43,739 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:00:43,739 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1310766109] [2021-05-21 20:00:43,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:00:43,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:00:43,794 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:00:43,794 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:00:43,794 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1310766109] [2021-05-21 20:00:43,794 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1310766109] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:00:43,794 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:00:43,794 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-21 20:00:43,794 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1812474619] [2021-05-21 20:00:43,794 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:00:43,794 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:00:43,794 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:00:43,794 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:00:43,795 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) [2021-05-21 20:00:43,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:00:43,947 INFO L93 Difference]: Finished difference Result 1473 states and 3992 transitions. [2021-05-21 20:00:43,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:00:43,948 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 [2021-05-21 20:00:43,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:00:43,949 INFO L225 Difference]: With dead ends: 1473 [2021-05-21 20:00:43,949 INFO L226 Difference]: Without dead ends: 1381 [2021-05-21 20:00:43,949 INFO L777 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 [2021-05-21 20:00:43,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1381 states. [2021-05-21 20:00:43,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1381 to 1234. [2021-05-21 20:00:43,959 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) [2021-05-21 20:00:43,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1234 states to 1234 states and 3342 transitions. [2021-05-21 20:00:43,961 INFO L78 Accepts]: Start accepts. Automaton has 1234 states and 3342 transitions. Word has length 26 [2021-05-21 20:00:43,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:00:43,961 INFO L482 AbstractCegarLoop]: Abstraction has 1234 states and 3342 transitions. [2021-05-21 20:00:43,961 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:00:43,961 INFO L276 IsEmpty]: Start isEmpty. Operand 1234 states and 3342 transitions. [2021-05-21 20:00:43,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 20:00:43,962 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:00:43,962 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:00:43,962 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable268 [2021-05-21 20:00:43,962 INFO L430 AbstractCegarLoop]: === Iteration 270 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 20:00:43,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:00:43,962 INFO L82 PathProgramCache]: Analyzing trace with hash 998145596, now seen corresponding path program 268 times [2021-05-21 20:00:43,962 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:00:43,962 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1568903645] [2021-05-21 20:00:43,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:00:43,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:00:44,008 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:00:44,008 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:00:44,008 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1568903645] [2021-05-21 20:00:44,008 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1568903645] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:00:44,008 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:00:44,008 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:00:44,008 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [459983439] [2021-05-21 20:00:44,008 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-21 20:00:44,008 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:00:44,008 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-21 20:00:44,008 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-05-21 20:00:44,008 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) [2021-05-21 20:00:44,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:00:44,133 INFO L93 Difference]: Finished difference Result 1450 states and 3914 transitions. [2021-05-21 20:00:44,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-21 20:00:44,133 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 [2021-05-21 20:00:44,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:00:44,135 INFO L225 Difference]: With dead ends: 1450 [2021-05-21 20:00:44,135 INFO L226 Difference]: Without dead ends: 1359 [2021-05-21 20:00:44,135 INFO L777 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 [2021-05-21 20:00:44,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1359 states. [2021-05-21 20:00:44,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1359 to 1260. [2021-05-21 20:00:44,145 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) [2021-05-21 20:00:44,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1260 states to 1260 states and 3414 transitions. [2021-05-21 20:00:44,147 INFO L78 Accepts]: Start accepts. Automaton has 1260 states and 3414 transitions. Word has length 26 [2021-05-21 20:00:44,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:00:44,147 INFO L482 AbstractCegarLoop]: Abstraction has 1260 states and 3414 transitions. [2021-05-21 20:00:44,147 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) [2021-05-21 20:00:44,147 INFO L276 IsEmpty]: Start isEmpty. Operand 1260 states and 3414 transitions. [2021-05-21 20:00:44,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 20:00:44,148 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:00:44,148 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:00:44,148 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable269 [2021-05-21 20:00:44,148 INFO L430 AbstractCegarLoop]: === Iteration 271 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 20:00:44,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:00:44,149 INFO L82 PathProgramCache]: Analyzing trace with hash 1867590204, now seen corresponding path program 269 times [2021-05-21 20:00:44,149 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:00:44,149 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [440384516] [2021-05-21 20:00:44,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:00:44,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:00:44,223 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:00:44,224 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:00:44,224 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [440384516] [2021-05-21 20:00:44,224 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [440384516] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:00:44,224 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:00:44,224 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-21 20:00:44,224 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1261982058] [2021-05-21 20:00:44,224 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:00:44,224 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:00:44,224 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:00:44,224 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:00:44,224 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) [2021-05-21 20:00:44,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:00:44,372 INFO L93 Difference]: Finished difference Result 1501 states and 4029 transitions. [2021-05-21 20:00:44,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:00:44,372 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-05-21 20:00:44,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:00:44,374 INFO L225 Difference]: With dead ends: 1501 [2021-05-21 20:00:44,374 INFO L226 Difference]: Without dead ends: 1304 [2021-05-21 20:00:44,374 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 67.3ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:00:44,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1304 states. [2021-05-21 20:00:44,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1304 to 1244. [2021-05-21 20:00:44,384 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) [2021-05-21 20:00:44,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1244 states to 1244 states and 3349 transitions. [2021-05-21 20:00:44,385 INFO L78 Accepts]: Start accepts. Automaton has 1244 states and 3349 transitions. Word has length 26 [2021-05-21 20:00:44,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:00:44,385 INFO L482 AbstractCegarLoop]: Abstraction has 1244 states and 3349 transitions. [2021-05-21 20:00:44,385 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:00:44,385 INFO L276 IsEmpty]: Start isEmpty. Operand 1244 states and 3349 transitions. [2021-05-21 20:00:44,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 20:00:44,386 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:00:44,386 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:00:44,386 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable270 [2021-05-21 20:00:44,387 INFO L430 AbstractCegarLoop]: === Iteration 272 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 20:00:44,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:00:44,387 INFO L82 PathProgramCache]: Analyzing trace with hash -719595174, now seen corresponding path program 270 times [2021-05-21 20:00:44,387 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:00:44,387 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1742092468] [2021-05-21 20:00:44,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:00:44,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:00:44,441 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:00:44,441 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:00:44,441 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1742092468] [2021-05-21 20:00:44,441 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1742092468] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:00:44,441 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:00:44,441 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-21 20:00:44,441 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [815116652] [2021-05-21 20:00:44,441 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:00:44,442 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:00:44,442 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:00:44,442 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:00:44,442 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) [2021-05-21 20:00:44,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:00:44,595 INFO L93 Difference]: Finished difference Result 1399 states and 3720 transitions. [2021-05-21 20:00:44,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:00:44,595 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-05-21 20:00:44,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:00:44,597 INFO L225 Difference]: With dead ends: 1399 [2021-05-21 20:00:44,597 INFO L226 Difference]: Without dead ends: 1304 [2021-05-21 20:00:44,597 INFO L777 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 [2021-05-21 20:00:44,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1304 states. [2021-05-21 20:00:44,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1304 to 1244. [2021-05-21 20:00:44,607 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) [2021-05-21 20:00:44,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1244 states to 1244 states and 3349 transitions. [2021-05-21 20:00:44,608 INFO L78 Accepts]: Start accepts. Automaton has 1244 states and 3349 transitions. Word has length 26 [2021-05-21 20:00:44,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:00:44,608 INFO L482 AbstractCegarLoop]: Abstraction has 1244 states and 3349 transitions. [2021-05-21 20:00:44,608 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:00:44,608 INFO L276 IsEmpty]: Start isEmpty. Operand 1244 states and 3349 transitions. [2021-05-21 20:00:44,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 20:00:44,609 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:00:44,610 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:00:44,610 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable271 [2021-05-21 20:00:44,610 INFO L430 AbstractCegarLoop]: === Iteration 273 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 20:00:44,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:00:44,610 INFO L82 PathProgramCache]: Analyzing trace with hash 149849434, now seen corresponding path program 271 times [2021-05-21 20:00:44,610 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:00:44,610 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1013886926] [2021-05-21 20:00:44,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:00:44,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:00:44,664 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:00:44,664 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:00:44,664 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1013886926] [2021-05-21 20:00:44,664 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1013886926] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:00:44,664 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:00:44,664 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-21 20:00:44,664 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [719178224] [2021-05-21 20:00:44,664 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:00:44,664 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:00:44,664 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:00:44,664 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:00:44,665 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) [2021-05-21 20:00:44,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:00:44,817 INFO L93 Difference]: Finished difference Result 1389 states and 3693 transitions. [2021-05-21 20:00:44,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:00:44,818 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-05-21 20:00:44,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:00:44,819 INFO L225 Difference]: With dead ends: 1389 [2021-05-21 20:00:44,819 INFO L226 Difference]: Without dead ends: 1292 [2021-05-21 20:00:44,819 INFO L777 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 [2021-05-21 20:00:44,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1292 states. [2021-05-21 20:00:44,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1292 to 1244. [2021-05-21 20:00:44,829 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) [2021-05-21 20:00:44,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1244 states to 1244 states and 3347 transitions. [2021-05-21 20:00:44,831 INFO L78 Accepts]: Start accepts. Automaton has 1244 states and 3347 transitions. Word has length 26 [2021-05-21 20:00:44,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:00:44,831 INFO L482 AbstractCegarLoop]: Abstraction has 1244 states and 3347 transitions. [2021-05-21 20:00:44,831 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:00:44,831 INFO L276 IsEmpty]: Start isEmpty. Operand 1244 states and 3347 transitions. [2021-05-21 20:00:44,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 20:00:44,832 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:00:44,832 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:00:44,832 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable272 [2021-05-21 20:00:44,832 INFO L430 AbstractCegarLoop]: === Iteration 274 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 20:00:44,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:00:44,832 INFO L82 PathProgramCache]: Analyzing trace with hash -1305708224, now seen corresponding path program 272 times [2021-05-21 20:00:44,832 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:00:44,832 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2131804251] [2021-05-21 20:00:44,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:00:44,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:00:44,891 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:00:44,891 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:00:44,891 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2131804251] [2021-05-21 20:00:44,891 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2131804251] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:00:44,891 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:00:44,891 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-21 20:00:44,892 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [732217944] [2021-05-21 20:00:44,892 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:00:44,892 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:00:44,892 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:00:44,892 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:00:44,892 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) [2021-05-21 20:00:45,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:00:45,058 INFO L93 Difference]: Finished difference Result 1371 states and 3646 transitions. [2021-05-21 20:00:45,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:00:45,059 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-05-21 20:00:45,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:00:45,060 INFO L225 Difference]: With dead ends: 1371 [2021-05-21 20:00:45,060 INFO L226 Difference]: Without dead ends: 1266 [2021-05-21 20:00:45,060 INFO L777 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 [2021-05-21 20:00:45,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1266 states. [2021-05-21 20:00:45,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1266 to 1232. [2021-05-21 20:00:45,070 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) [2021-05-21 20:00:45,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1232 states to 1232 states and 3323 transitions. [2021-05-21 20:00:45,072 INFO L78 Accepts]: Start accepts. Automaton has 1232 states and 3323 transitions. Word has length 26 [2021-05-21 20:00:45,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:00:45,072 INFO L482 AbstractCegarLoop]: Abstraction has 1232 states and 3323 transitions. [2021-05-21 20:00:45,072 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:00:45,072 INFO L276 IsEmpty]: Start isEmpty. Operand 1232 states and 3323 transitions. [2021-05-21 20:00:45,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 20:00:45,073 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:00:45,073 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:00:45,073 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable273 [2021-05-21 20:00:45,073 INFO L430 AbstractCegarLoop]: === Iteration 275 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 20:00:45,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:00:45,073 INFO L82 PathProgramCache]: Analyzing trace with hash -1117934054, now seen corresponding path program 273 times [2021-05-21 20:00:45,073 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:00:45,073 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1680786817] [2021-05-21 20:00:45,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:00:45,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:00:45,134 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:00:45,134 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:00:45,134 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1680786817] [2021-05-21 20:00:45,134 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1680786817] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:00:45,134 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:00:45,134 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:00:45,134 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1392720177] [2021-05-21 20:00:45,134 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-21 20:00:45,134 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:00:45,135 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-21 20:00:45,135 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-05-21 20:00:45,135 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) [2021-05-21 20:00:45,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:00:45,256 INFO L93 Difference]: Finished difference Result 1470 states and 3952 transitions. [2021-05-21 20:00:45,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-21 20:00:45,256 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 [2021-05-21 20:00:45,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:00:45,258 INFO L225 Difference]: With dead ends: 1470 [2021-05-21 20:00:45,258 INFO L226 Difference]: Without dead ends: 1389 [2021-05-21 20:00:45,258 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 52.9ms TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-05-21 20:00:45,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1389 states. [2021-05-21 20:00:45,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1389 to 1270. [2021-05-21 20:00:45,268 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) [2021-05-21 20:00:45,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1270 states to 1270 states and 3430 transitions. [2021-05-21 20:00:45,270 INFO L78 Accepts]: Start accepts. Automaton has 1270 states and 3430 transitions. Word has length 26 [2021-05-21 20:00:45,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:00:45,270 INFO L482 AbstractCegarLoop]: Abstraction has 1270 states and 3430 transitions. [2021-05-21 20:00:45,270 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) [2021-05-21 20:00:45,270 INFO L276 IsEmpty]: Start isEmpty. Operand 1270 states and 3430 transitions. [2021-05-21 20:00:45,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 20:00:45,271 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:00:45,271 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:00:45,271 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable274 [2021-05-21 20:00:45,271 INFO L430 AbstractCegarLoop]: === Iteration 276 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 20:00:45,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:00:45,271 INFO L82 PathProgramCache]: Analyzing trace with hash -248489446, now seen corresponding path program 274 times [2021-05-21 20:00:45,272 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:00:45,272 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2120695169] [2021-05-21 20:00:45,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:00:45,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:00:45,326 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:00:45,326 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:00:45,326 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2120695169] [2021-05-21 20:00:45,326 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2120695169] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:00:45,326 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:00:45,326 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-21 20:00:45,326 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125790263] [2021-05-21 20:00:45,327 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:00:45,327 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:00:45,327 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:00:45,327 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:00:45,327 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) [2021-05-21 20:00:45,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:00:45,476 INFO L93 Difference]: Finished difference Result 1525 states and 4077 transitions. [2021-05-21 20:00:45,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:00:45,477 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-05-21 20:00:45,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:00:45,478 INFO L225 Difference]: With dead ends: 1525 [2021-05-21 20:00:45,478 INFO L226 Difference]: Without dead ends: 1330 [2021-05-21 20:00:45,478 INFO L777 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 [2021-05-21 20:00:45,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1330 states. [2021-05-21 20:00:45,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1330 to 1232. [2021-05-21 20:00:45,488 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) [2021-05-21 20:00:45,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1232 states to 1232 states and 3311 transitions. [2021-05-21 20:00:45,490 INFO L78 Accepts]: Start accepts. Automaton has 1232 states and 3311 transitions. Word has length 26 [2021-05-21 20:00:45,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:00:45,490 INFO L482 AbstractCegarLoop]: Abstraction has 1232 states and 3311 transitions. [2021-05-21 20:00:45,490 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:00:45,490 INFO L276 IsEmpty]: Start isEmpty. Operand 1232 states and 3311 transitions. [2021-05-21 20:00:45,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 20:00:45,491 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:00:45,491 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:00:45,491 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable275 [2021-05-21 20:00:45,491 INFO L430 AbstractCegarLoop]: === Iteration 277 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 20:00:45,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:00:45,491 INFO L82 PathProgramCache]: Analyzing trace with hash -236549542, now seen corresponding path program 275 times [2021-05-21 20:00:45,492 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:00:45,492 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [632195054] [2021-05-21 20:00:45,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:00:45,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:00:45,551 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:00:45,552 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:00:45,552 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [632195054] [2021-05-21 20:00:45,552 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [632195054] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:00:45,552 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:00:45,552 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-21 20:00:45,552 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909730575] [2021-05-21 20:00:45,552 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:00:45,552 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:00:45,553 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:00:45,553 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:00:45,553 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) [2021-05-21 20:00:45,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:00:45,709 INFO L93 Difference]: Finished difference Result 1421 states and 3771 transitions. [2021-05-21 20:00:45,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:00:45,710 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 [2021-05-21 20:00:45,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:00:45,711 INFO L225 Difference]: With dead ends: 1421 [2021-05-21 20:00:45,711 INFO L226 Difference]: Without dead ends: 1334 [2021-05-21 20:00:45,711 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 52.6ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:00:45,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1334 states. [2021-05-21 20:00:45,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1334 to 1222. [2021-05-21 20:00:45,721 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) [2021-05-21 20:00:45,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1222 states to 1222 states and 3287 transitions. [2021-05-21 20:00:45,722 INFO L78 Accepts]: Start accepts. Automaton has 1222 states and 3287 transitions. Word has length 26 [2021-05-21 20:00:45,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:00:45,722 INFO L482 AbstractCegarLoop]: Abstraction has 1222 states and 3287 transitions. [2021-05-21 20:00:45,722 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:00:45,723 INFO L276 IsEmpty]: Start isEmpty. Operand 1222 states and 3287 transitions. [2021-05-21 20:00:45,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 20:00:45,724 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:00:45,724 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:00:45,724 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable276 [2021-05-21 20:00:45,724 INFO L430 AbstractCegarLoop]: === Iteration 278 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 20:00:45,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:00:45,724 INFO L82 PathProgramCache]: Analyzing trace with hash 632895066, now seen corresponding path program 276 times [2021-05-21 20:00:45,724 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:00:45,724 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [471011200] [2021-05-21 20:00:45,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:00:45,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:00:45,777 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:00:45,777 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:00:45,777 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [471011200] [2021-05-21 20:00:45,777 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [471011200] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:00:45,777 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:00:45,777 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-21 20:00:45,777 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [347977072] [2021-05-21 20:00:45,777 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:00:45,777 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:00:45,777 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:00:45,777 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:00:45,778 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) [2021-05-21 20:00:45,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:00:45,937 INFO L93 Difference]: Finished difference Result 1394 states and 3706 transitions. [2021-05-21 20:00:45,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:00:45,937 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-05-21 20:00:45,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:00:45,938 INFO L225 Difference]: With dead ends: 1394 [2021-05-21 20:00:45,938 INFO L226 Difference]: Without dead ends: 1297 [2021-05-21 20:00:45,939 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 46.2ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:00:45,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1297 states. [2021-05-21 20:00:45,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1297 to 1237. [2021-05-21 20:00:45,949 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) [2021-05-21 20:00:45,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1237 states to 1237 states and 3323 transitions. [2021-05-21 20:00:45,950 INFO L78 Accepts]: Start accepts. Automaton has 1237 states and 3323 transitions. Word has length 26 [2021-05-21 20:00:45,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:00:45,950 INFO L482 AbstractCegarLoop]: Abstraction has 1237 states and 3323 transitions. [2021-05-21 20:00:45,950 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:00:45,950 INFO L276 IsEmpty]: Start isEmpty. Operand 1237 states and 3323 transitions. [2021-05-21 20:00:45,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 20:00:45,951 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:00:45,951 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:00:45,951 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable277 [2021-05-21 20:00:45,951 INFO L430 AbstractCegarLoop]: === Iteration 279 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 20:00:45,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:00:45,951 INFO L82 PathProgramCache]: Analyzing trace with hash 1445097654, now seen corresponding path program 277 times [2021-05-21 20:00:45,952 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:00:45,952 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [597386214] [2021-05-21 20:00:45,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:00:45,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:00:46,005 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:00:46,005 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:00:46,005 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [597386214] [2021-05-21 20:00:46,005 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [597386214] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:00:46,005 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:00:46,005 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-21 20:00:46,005 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1139630101] [2021-05-21 20:00:46,005 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:00:46,005 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:00:46,005 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:00:46,005 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:00:46,005 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) [2021-05-21 20:00:46,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:00:46,163 INFO L93 Difference]: Finished difference Result 1383 states and 3684 transitions. [2021-05-21 20:00:46,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:00:46,163 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 [2021-05-21 20:00:46,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:00:46,165 INFO L225 Difference]: With dead ends: 1383 [2021-05-21 20:00:46,165 INFO L226 Difference]: Without dead ends: 1281 [2021-05-21 20:00:46,165 INFO L777 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 [2021-05-21 20:00:46,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1281 states. [2021-05-21 20:00:46,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1281 to 1234. [2021-05-21 20:00:46,175 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) [2021-05-21 20:00:46,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1234 states to 1234 states and 3315 transitions. [2021-05-21 20:00:46,176 INFO L78 Accepts]: Start accepts. Automaton has 1234 states and 3315 transitions. Word has length 26 [2021-05-21 20:00:46,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:00:46,176 INFO L482 AbstractCegarLoop]: Abstraction has 1234 states and 3315 transitions. [2021-05-21 20:00:46,176 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:00:46,176 INFO L276 IsEmpty]: Start isEmpty. Operand 1234 states and 3315 transitions. [2021-05-21 20:00:46,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 20:00:46,177 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:00:46,177 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:00:46,177 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable278 [2021-05-21 20:00:46,178 INFO L430 AbstractCegarLoop]: === Iteration 280 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 20:00:46,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:00:46,178 INFO L82 PathProgramCache]: Analyzing trace with hash 415683934, now seen corresponding path program 278 times [2021-05-21 20:00:46,178 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:00:46,178 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1908327505] [2021-05-21 20:00:46,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:00:46,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:00:46,231 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:00:46,231 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:00:46,231 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1908327505] [2021-05-21 20:00:46,231 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1908327505] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:00:46,231 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:00:46,231 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-21 20:00:46,231 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1533107735] [2021-05-21 20:00:46,231 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:00:46,231 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:00:46,232 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:00:46,232 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:00:46,232 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) [2021-05-21 20:00:46,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:00:46,382 INFO L93 Difference]: Finished difference Result 1413 states and 3754 transitions. [2021-05-21 20:00:46,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:00:46,382 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-05-21 20:00:46,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:00:46,384 INFO L225 Difference]: With dead ends: 1413 [2021-05-21 20:00:46,384 INFO L226 Difference]: Without dead ends: 1284 [2021-05-21 20:00:46,384 INFO L777 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 [2021-05-21 20:00:46,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1284 states. [2021-05-21 20:00:46,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1284 to 1234. [2021-05-21 20:00:46,394 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) [2021-05-21 20:00:46,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1234 states to 1234 states and 3311 transitions. [2021-05-21 20:00:46,396 INFO L78 Accepts]: Start accepts. Automaton has 1234 states and 3311 transitions. Word has length 26 [2021-05-21 20:00:46,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:00:46,396 INFO L482 AbstractCegarLoop]: Abstraction has 1234 states and 3311 transitions. [2021-05-21 20:00:46,396 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:00:46,396 INFO L276 IsEmpty]: Start isEmpty. Operand 1234 states and 3311 transitions. [2021-05-21 20:00:46,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 20:00:46,397 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:00:46,397 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:00:46,397 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable279 [2021-05-21 20:00:46,397 INFO L430 AbstractCegarLoop]: === Iteration 281 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 20:00:46,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:00:46,397 INFO L82 PathProgramCache]: Analyzing trace with hash -444631560, now seen corresponding path program 279 times [2021-05-21 20:00:46,397 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:00:46,398 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1578699965] [2021-05-21 20:00:46,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:00:46,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:00:46,473 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:00:46,473 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:00:46,473 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1578699965] [2021-05-21 20:00:46,474 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1578699965] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:00:46,474 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:00:46,474 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-21 20:00:46,474 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1743803181] [2021-05-21 20:00:46,474 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:00:46,474 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:00:46,474 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:00:46,474 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:00:46,474 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) [2021-05-21 20:00:46,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:00:46,631 INFO L93 Difference]: Finished difference Result 1364 states and 3627 transitions. [2021-05-21 20:00:46,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:00:46,631 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-05-21 20:00:46,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:00:46,632 INFO L225 Difference]: With dead ends: 1364 [2021-05-21 20:00:46,632 INFO L226 Difference]: Without dead ends: 1283 [2021-05-21 20:00:46,632 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 53.3ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:00:46,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1283 states. [2021-05-21 20:00:46,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1283 to 1235. [2021-05-21 20:00:46,642 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) [2021-05-21 20:00:46,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1235 states to 1235 states and 3315 transitions. [2021-05-21 20:00:46,644 INFO L78 Accepts]: Start accepts. Automaton has 1235 states and 3315 transitions. Word has length 26 [2021-05-21 20:00:46,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:00:46,644 INFO L482 AbstractCegarLoop]: Abstraction has 1235 states and 3315 transitions. [2021-05-21 20:00:46,644 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) [2021-05-21 20:00:46,644 INFO L276 IsEmpty]: Start isEmpty. Operand 1235 states and 3315 transitions. [2021-05-21 20:00:46,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 20:00:46,645 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:00:46,645 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:00:46,645 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable280 [2021-05-21 20:00:46,645 INFO L430 AbstractCegarLoop]: === Iteration 282 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 20:00:46,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:00:46,645 INFO L82 PathProgramCache]: Analyzing trace with hash 424813048, now seen corresponding path program 280 times [2021-05-21 20:00:46,645 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:00:46,645 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1222380947] [2021-05-21 20:00:46,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:00:46,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:00:46,700 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:00:46,700 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:00:46,700 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1222380947] [2021-05-21 20:00:46,700 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1222380947] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:00:46,700 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:00:46,700 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-21 20:00:46,700 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2106751806] [2021-05-21 20:00:46,701 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:00:46,701 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:00:46,701 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:00:46,701 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:00:46,701 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) [2021-05-21 20:00:46,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:00:46,855 INFO L93 Difference]: Finished difference Result 1374 states and 3654 transitions. [2021-05-21 20:00:46,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:00:46,856 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-05-21 20:00:46,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:00:46,857 INFO L225 Difference]: With dead ends: 1374 [2021-05-21 20:00:46,857 INFO L226 Difference]: Without dead ends: 1277 [2021-05-21 20:00:46,857 INFO L777 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 [2021-05-21 20:00:46,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1277 states. [2021-05-21 20:00:46,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1277 to 1236. [2021-05-21 20:00:46,867 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) [2021-05-21 20:00:46,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1236 states to 1236 states and 3317 transitions. [2021-05-21 20:00:46,868 INFO L78 Accepts]: Start accepts. Automaton has 1236 states and 3317 transitions. Word has length 26 [2021-05-21 20:00:46,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:00:46,868 INFO L482 AbstractCegarLoop]: Abstraction has 1236 states and 3317 transitions. [2021-05-21 20:00:46,869 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:00:46,869 INFO L276 IsEmpty]: Start isEmpty. Operand 1236 states and 3317 transitions. [2021-05-21 20:00:46,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 20:00:46,870 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:00:46,870 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:00:46,870 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable281 [2021-05-21 20:00:46,870 INFO L430 AbstractCegarLoop]: === Iteration 283 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 20:00:46,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:00:46,870 INFO L82 PathProgramCache]: Analyzing trace with hash -1043898182, now seen corresponding path program 281 times [2021-05-21 20:00:46,870 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:00:46,870 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [26973910] [2021-05-21 20:00:46,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:00:46,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:00:46,931 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:00:46,931 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:00:46,931 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [26973910] [2021-05-21 20:00:46,931 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [26973910] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:00:46,931 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:00:46,931 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-21 20:00:46,931 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [233908560] [2021-05-21 20:00:46,931 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:00:46,931 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:00:46,932 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:00:46,932 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:00:46,932 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) [2021-05-21 20:00:47,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:00:47,085 INFO L93 Difference]: Finished difference Result 1361 states and 3614 transitions. [2021-05-21 20:00:47,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:00:47,087 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-05-21 20:00:47,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:00:47,088 INFO L225 Difference]: With dead ends: 1361 [2021-05-21 20:00:47,088 INFO L226 Difference]: Without dead ends: 1270 [2021-05-21 20:00:47,088 INFO L777 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 [2021-05-21 20:00:47,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1270 states. [2021-05-21 20:00:47,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1270 to 1230. [2021-05-21 20:00:47,098 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) [2021-05-21 20:00:47,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1230 states to 1230 states and 3293 transitions. [2021-05-21 20:00:47,100 INFO L78 Accepts]: Start accepts. Automaton has 1230 states and 3293 transitions. Word has length 26 [2021-05-21 20:00:47,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:00:47,100 INFO L482 AbstractCegarLoop]: Abstraction has 1230 states and 3293 transitions. [2021-05-21 20:00:47,100 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) [2021-05-21 20:00:47,100 INFO L276 IsEmpty]: Start isEmpty. Operand 1230 states and 3293 transitions. [2021-05-21 20:00:47,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 20:00:47,101 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:00:47,101 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:00:47,101 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable282 [2021-05-21 20:00:47,101 INFO L430 AbstractCegarLoop]: === Iteration 284 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 20:00:47,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:00:47,101 INFO L82 PathProgramCache]: Analyzing trace with hash -1030744610, now seen corresponding path program 282 times [2021-05-21 20:00:47,101 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:00:47,101 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1439195803] [2021-05-21 20:00:47,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:00:47,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:00:47,160 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:00:47,160 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:00:47,160 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1439195803] [2021-05-21 20:00:47,160 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1439195803] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:00:47,160 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:00:47,160 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-21 20:00:47,160 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1840811560] [2021-05-21 20:00:47,160 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:00:47,160 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:00:47,160 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:00:47,160 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:00:47,160 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) [2021-05-21 20:00:47,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:00:47,316 INFO L93 Difference]: Finished difference Result 1343 states and 3570 transitions. [2021-05-21 20:00:47,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:00:47,316 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 [2021-05-21 20:00:47,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:00:47,318 INFO L225 Difference]: With dead ends: 1343 [2021-05-21 20:00:47,318 INFO L226 Difference]: Without dead ends: 1244 [2021-05-21 20:00:47,318 INFO L777 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 [2021-05-21 20:00:47,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1244 states. [2021-05-21 20:00:47,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1244 to 1229. [2021-05-21 20:00:47,328 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) [2021-05-21 20:00:47,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1229 states to 1229 states and 3292 transitions. [2021-05-21 20:00:47,329 INFO L78 Accepts]: Start accepts. Automaton has 1229 states and 3292 transitions. Word has length 26 [2021-05-21 20:00:47,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:00:47,330 INFO L482 AbstractCegarLoop]: Abstraction has 1229 states and 3292 transitions. [2021-05-21 20:00:47,330 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:00:47,330 INFO L276 IsEmpty]: Start isEmpty. Operand 1229 states and 3292 transitions. [2021-05-21 20:00:47,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 20:00:47,331 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:00:47,331 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:00:47,331 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable283 [2021-05-21 20:00:47,331 INFO L430 AbstractCegarLoop]: === Iteration 285 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 20:00:47,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:00:47,331 INFO L82 PathProgramCache]: Analyzing trace with hash -651439526, now seen corresponding path program 283 times [2021-05-21 20:00:47,331 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:00:47,331 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [322799343] [2021-05-21 20:00:47,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:00:47,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:00:47,385 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:00:47,385 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:00:47,385 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [322799343] [2021-05-21 20:00:47,385 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [322799343] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:00:47,385 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:00:47,386 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-21 20:00:47,386 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574485775] [2021-05-21 20:00:47,386 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:00:47,386 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:00:47,386 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:00:47,386 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:00:47,386 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) [2021-05-21 20:00:47,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:00:47,537 INFO L93 Difference]: Finished difference Result 1364 states and 3621 transitions. [2021-05-21 20:00:47,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:00:47,537 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-05-21 20:00:47,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:00:47,538 INFO L225 Difference]: With dead ends: 1364 [2021-05-21 20:00:47,538 INFO L226 Difference]: Without dead ends: 1283 [2021-05-21 20:00:47,538 INFO L777 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 [2021-05-21 20:00:47,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1283 states. [2021-05-21 20:00:47,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1283 to 1229. [2021-05-21 20:00:47,549 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) [2021-05-21 20:00:47,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1229 states to 1229 states and 3294 transitions. [2021-05-21 20:00:47,550 INFO L78 Accepts]: Start accepts. Automaton has 1229 states and 3294 transitions. Word has length 26 [2021-05-21 20:00:47,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:00:47,550 INFO L482 AbstractCegarLoop]: Abstraction has 1229 states and 3294 transitions. [2021-05-21 20:00:47,550 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) [2021-05-21 20:00:47,550 INFO L276 IsEmpty]: Start isEmpty. Operand 1229 states and 3294 transitions. [2021-05-21 20:00:47,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 20:00:47,551 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:00:47,551 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:00:47,551 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable284 [2021-05-21 20:00:47,551 INFO L430 AbstractCegarLoop]: === Iteration 286 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 20:00:47,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:00:47,552 INFO L82 PathProgramCache]: Analyzing trace with hash 218005082, now seen corresponding path program 284 times [2021-05-21 20:00:47,552 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:00:47,552 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [220266763] [2021-05-21 20:00:47,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:00:47,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:00:47,609 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:00:47,609 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:00:47,609 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [220266763] [2021-05-21 20:00:47,609 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [220266763] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:00:47,610 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:00:47,610 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-21 20:00:47,610 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [15547212] [2021-05-21 20:00:47,610 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:00:47,610 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:00:47,610 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:00:47,610 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:00:47,610 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) [2021-05-21 20:00:47,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:00:47,766 INFO L93 Difference]: Finished difference Result 1372 states and 3640 transitions. [2021-05-21 20:00:47,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:00:47,767 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 [2021-05-21 20:00:47,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:00:47,768 INFO L225 Difference]: With dead ends: 1372 [2021-05-21 20:00:47,768 INFO L226 Difference]: Without dead ends: 1275 [2021-05-21 20:00:47,768 INFO L777 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 [2021-05-21 20:00:47,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1275 states. [2021-05-21 20:00:47,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1275 to 1228. [2021-05-21 20:00:47,778 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) [2021-05-21 20:00:47,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1228 states to 1228 states and 3287 transitions. [2021-05-21 20:00:47,779 INFO L78 Accepts]: Start accepts. Automaton has 1228 states and 3287 transitions. Word has length 26 [2021-05-21 20:00:47,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:00:47,779 INFO L482 AbstractCegarLoop]: Abstraction has 1228 states and 3287 transitions. [2021-05-21 20:00:47,779 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) [2021-05-21 20:00:47,779 INFO L276 IsEmpty]: Start isEmpty. Operand 1228 states and 3287 transitions. [2021-05-21 20:00:47,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 20:00:47,780 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:00:47,780 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:00:47,780 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable285 [2021-05-21 20:00:47,780 INFO L430 AbstractCegarLoop]: === Iteration 287 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 20:00:47,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:00:47,781 INFO L82 PathProgramCache]: Analyzing trace with hash 2138688952, now seen corresponding path program 285 times [2021-05-21 20:00:47,781 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:00:47,781 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [27463830] [2021-05-21 20:00:47,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:00:47,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:00:47,842 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:00:47,843 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:00:47,843 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [27463830] [2021-05-21 20:00:47,843 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [27463830] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:00:47,843 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:00:47,843 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-21 20:00:47,843 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1589199732] [2021-05-21 20:00:47,843 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:00:47,843 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:00:47,843 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:00:47,843 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:00:47,843 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) [2021-05-21 20:00:47,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:00:47,999 INFO L93 Difference]: Finished difference Result 1374 states and 3642 transitions. [2021-05-21 20:00:48,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:00:48,000 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-05-21 20:00:48,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:00:48,001 INFO L225 Difference]: With dead ends: 1374 [2021-05-21 20:00:48,001 INFO L226 Difference]: Without dead ends: 1287 [2021-05-21 20:00:48,001 INFO L777 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 [2021-05-21 20:00:48,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1287 states. [2021-05-21 20:00:48,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1287 to 1225. [2021-05-21 20:00:48,015 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) [2021-05-21 20:00:48,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1225 states to 1225 states and 3275 transitions. [2021-05-21 20:00:48,017 INFO L78 Accepts]: Start accepts. Automaton has 1225 states and 3275 transitions. Word has length 26 [2021-05-21 20:00:48,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:00:48,017 INFO L482 AbstractCegarLoop]: Abstraction has 1225 states and 3275 transitions. [2021-05-21 20:00:48,017 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) [2021-05-21 20:00:48,017 INFO L276 IsEmpty]: Start isEmpty. Operand 1225 states and 3275 transitions. [2021-05-21 20:00:48,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 20:00:48,018 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:00:48,018 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:00:48,018 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable286 [2021-05-21 20:00:48,018 INFO L430 AbstractCegarLoop]: === Iteration 288 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 20:00:48,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:00:48,019 INFO L82 PathProgramCache]: Analyzing trace with hash -36340652, now seen corresponding path program 286 times [2021-05-21 20:00:48,019 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:00:48,019 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1506588113] [2021-05-21 20:00:48,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:00:48,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:00:48,084 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:00:48,084 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:00:48,084 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1506588113] [2021-05-21 20:00:48,084 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1506588113] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:00:48,084 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:00:48,084 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-21 20:00:48,084 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [112639386] [2021-05-21 20:00:48,084 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:00:48,084 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:00:48,084 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:00:48,085 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:00:48,085 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) [2021-05-21 20:00:48,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:00:48,237 INFO L93 Difference]: Finished difference Result 1354 states and 3596 transitions. [2021-05-21 20:00:48,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:00:48,238 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 [2021-05-21 20:00:48,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:00:48,239 INFO L225 Difference]: With dead ends: 1354 [2021-05-21 20:00:48,239 INFO L226 Difference]: Without dead ends: 1252 [2021-05-21 20:00:48,239 INFO L777 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 [2021-05-21 20:00:48,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1252 states. [2021-05-21 20:00:48,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1252 to 1223. [2021-05-21 20:00:48,249 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) [2021-05-21 20:00:48,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1223 states to 1223 states and 3273 transitions. [2021-05-21 20:00:48,250 INFO L78 Accepts]: Start accepts. Automaton has 1223 states and 3273 transitions. Word has length 26 [2021-05-21 20:00:48,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:00:48,251 INFO L482 AbstractCegarLoop]: Abstraction has 1223 states and 3273 transitions. [2021-05-21 20:00:48,251 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:00:48,251 INFO L276 IsEmpty]: Start isEmpty. Operand 1223 states and 3273 transitions. [2021-05-21 20:00:48,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 20:00:48,252 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:00:48,252 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:00:48,252 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable287 [2021-05-21 20:00:48,252 INFO L430 AbstractCegarLoop]: === Iteration 289 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 20:00:48,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:00:48,252 INFO L82 PathProgramCache]: Analyzing trace with hash -2094067648, now seen corresponding path program 287 times [2021-05-21 20:00:48,252 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:00:48,252 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [35165642] [2021-05-21 20:00:48,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:00:48,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:00:48,306 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:00:48,307 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:00:48,307 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [35165642] [2021-05-21 20:00:48,307 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [35165642] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:00:48,307 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:00:48,307 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-21 20:00:48,307 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135540948] [2021-05-21 20:00:48,307 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:00:48,307 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:00:48,307 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:00:48,307 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:00:48,307 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) [2021-05-21 20:00:48,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:00:48,470 INFO L93 Difference]: Finished difference Result 1345 states and 3575 transitions. [2021-05-21 20:00:48,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:00:48,470 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 [2021-05-21 20:00:48,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:00:48,471 INFO L225 Difference]: With dead ends: 1345 [2021-05-21 20:00:48,471 INFO L226 Difference]: Without dead ends: 1248 [2021-05-21 20:00:48,471 INFO L777 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 [2021-05-21 20:00:48,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1248 states. [2021-05-21 20:00:48,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1248 to 1222. [2021-05-21 20:00:48,481 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) [2021-05-21 20:00:48,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1222 states to 1222 states and 3270 transitions. [2021-05-21 20:00:48,482 INFO L78 Accepts]: Start accepts. Automaton has 1222 states and 3270 transitions. Word has length 26 [2021-05-21 20:00:48,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:00:48,483 INFO L482 AbstractCegarLoop]: Abstraction has 1222 states and 3270 transitions. [2021-05-21 20:00:48,483 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) [2021-05-21 20:00:48,483 INFO L276 IsEmpty]: Start isEmpty. Operand 1222 states and 3270 transitions. [2021-05-21 20:00:48,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 20:00:48,484 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:00:48,484 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:00:48,484 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable288 [2021-05-21 20:00:48,484 INFO L430 AbstractCegarLoop]: === Iteration 290 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 20:00:48,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:00:48,484 INFO L82 PathProgramCache]: Analyzing trace with hash 808755102, now seen corresponding path program 288 times [2021-05-21 20:00:48,484 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:00:48,484 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1041476371] [2021-05-21 20:00:48,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:00:48,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:00:48,538 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:00:48,538 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:00:48,538 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1041476371] [2021-05-21 20:00:48,538 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1041476371] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:00:48,538 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:00:48,538 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-21 20:00:48,538 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [13931757] [2021-05-21 20:00:48,538 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:00:48,538 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:00:48,539 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:00:48,539 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:00:48,539 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) [2021-05-21 20:00:48,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:00:48,714 INFO L93 Difference]: Finished difference Result 1347 states and 3575 transitions. [2021-05-21 20:00:48,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:00:48,714 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-05-21 20:00:48,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:00:48,715 INFO L225 Difference]: With dead ends: 1347 [2021-05-21 20:00:48,715 INFO L226 Difference]: Without dead ends: 1226 [2021-05-21 20:00:48,715 INFO L777 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 [2021-05-21 20:00:48,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1226 states. [2021-05-21 20:00:48,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1226 to 1190. [2021-05-21 20:00:48,725 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) [2021-05-21 20:00:48,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1190 states to 1190 states and 3194 transitions. [2021-05-21 20:00:48,727 INFO L78 Accepts]: Start accepts. Automaton has 1190 states and 3194 transitions. Word has length 26 [2021-05-21 20:00:48,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:00:48,727 INFO L482 AbstractCegarLoop]: Abstraction has 1190 states and 3194 transitions. [2021-05-21 20:00:48,727 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:00:48,727 INFO L276 IsEmpty]: Start isEmpty. Operand 1190 states and 3194 transitions. [2021-05-21 20:00:48,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 20:00:48,728 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:00:48,728 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:00:48,728 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable289 [2021-05-21 20:00:48,728 INFO L430 AbstractCegarLoop]: === Iteration 291 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 20:00:48,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:00:48,728 INFO L82 PathProgramCache]: Analyzing trace with hash 934338240, now seen corresponding path program 289 times [2021-05-21 20:00:48,728 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:00:48,728 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [90194115] [2021-05-21 20:00:48,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:00:48,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:00:48,776 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:00:48,776 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:00:48,776 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [90194115] [2021-05-21 20:00:48,776 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [90194115] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:00:48,776 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:00:48,776 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:00:48,776 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1201614069] [2021-05-21 20:00:48,776 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-21 20:00:48,776 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:00:48,776 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-21 20:00:48,776 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-05-21 20:00:48,777 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) [2021-05-21 20:00:48,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:00:48,890 INFO L93 Difference]: Finished difference Result 1469 states and 3888 transitions. [2021-05-21 20:00:48,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-21 20:00:48,891 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 [2021-05-21 20:00:48,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:00:48,892 INFO L225 Difference]: With dead ends: 1469 [2021-05-21 20:00:48,892 INFO L226 Difference]: Without dead ends: 1294 [2021-05-21 20:00:48,892 INFO L777 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 [2021-05-21 20:00:48,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1294 states. [2021-05-21 20:00:48,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1294 to 1264. [2021-05-21 20:00:48,902 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) [2021-05-21 20:00:48,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1264 states to 1264 states and 3363 transitions. [2021-05-21 20:00:48,903 INFO L78 Accepts]: Start accepts. Automaton has 1264 states and 3363 transitions. Word has length 26 [2021-05-21 20:00:48,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:00:48,904 INFO L482 AbstractCegarLoop]: Abstraction has 1264 states and 3363 transitions. [2021-05-21 20:00:48,904 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) [2021-05-21 20:00:48,904 INFO L276 IsEmpty]: Start isEmpty. Operand 1264 states and 3363 transitions. [2021-05-21 20:00:48,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 20:00:48,905 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:00:48,905 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:00:48,905 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable290 [2021-05-21 20:00:48,905 INFO L430 AbstractCegarLoop]: === Iteration 292 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 20:00:48,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:00:48,905 INFO L82 PathProgramCache]: Analyzing trace with hash 26087104, now seen corresponding path program 290 times [2021-05-21 20:00:48,905 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:00:48,905 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1844556362] [2021-05-21 20:00:48,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:00:48,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:00:48,949 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:00:48,949 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:00:48,949 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1844556362] [2021-05-21 20:00:48,949 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1844556362] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:00:48,949 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:00:48,949 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:00:48,949 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1333664891] [2021-05-21 20:00:48,950 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-21 20:00:48,950 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:00:48,950 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-21 20:00:48,950 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-05-21 20:00:48,950 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) [2021-05-21 20:00:49,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:00:49,065 INFO L93 Difference]: Finished difference Result 1463 states and 3865 transitions. [2021-05-21 20:00:49,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-21 20:00:49,065 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 [2021-05-21 20:00:49,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:00:49,067 INFO L225 Difference]: With dead ends: 1463 [2021-05-21 20:00:49,067 INFO L226 Difference]: Without dead ends: 1305 [2021-05-21 20:00:49,067 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 37.6ms TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-05-21 20:00:49,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1305 states. [2021-05-21 20:00:49,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1305 to 1277. [2021-05-21 20:00:49,077 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) [2021-05-21 20:00:49,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1277 states to 1277 states and 3382 transitions. [2021-05-21 20:00:49,078 INFO L78 Accepts]: Start accepts. Automaton has 1277 states and 3382 transitions. Word has length 26 [2021-05-21 20:00:49,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:00:49,078 INFO L482 AbstractCegarLoop]: Abstraction has 1277 states and 3382 transitions. [2021-05-21 20:00:49,078 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) [2021-05-21 20:00:49,078 INFO L276 IsEmpty]: Start isEmpty. Operand 1277 states and 3382 transitions. [2021-05-21 20:00:49,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 20:00:49,079 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:00:49,079 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:00:49,079 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable291 [2021-05-21 20:00:49,079 INFO L430 AbstractCegarLoop]: === Iteration 293 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 20:00:49,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:00:49,080 INFO L82 PathProgramCache]: Analyzing trace with hash 946663070, now seen corresponding path program 291 times [2021-05-21 20:00:49,080 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:00:49,080 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [184021650] [2021-05-21 20:00:49,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:00:49,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:00:49,133 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:00:49,134 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:00:49,134 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [184021650] [2021-05-21 20:00:49,134 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [184021650] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:00:49,134 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:00:49,134 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:00:49,134 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1790597736] [2021-05-21 20:00:49,134 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-21 20:00:49,134 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:00:49,134 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-21 20:00:49,134 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-05-21 20:00:49,134 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) [2021-05-21 20:00:49,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:00:49,255 INFO L93 Difference]: Finished difference Result 1480 states and 3886 transitions. [2021-05-21 20:00:49,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-21 20:00:49,255 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 [2021-05-21 20:00:49,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:00:49,257 INFO L225 Difference]: With dead ends: 1480 [2021-05-21 20:00:49,257 INFO L226 Difference]: Without dead ends: 1330 [2021-05-21 20:00:49,257 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 37.8ms TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-05-21 20:00:49,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1330 states. [2021-05-21 20:00:49,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1330 to 1268. [2021-05-21 20:00:49,267 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) [2021-05-21 20:00:49,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1268 states to 1268 states and 3355 transitions. [2021-05-21 20:00:49,269 INFO L78 Accepts]: Start accepts. Automaton has 1268 states and 3355 transitions. Word has length 26 [2021-05-21 20:00:49,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:00:49,269 INFO L482 AbstractCegarLoop]: Abstraction has 1268 states and 3355 transitions. [2021-05-21 20:00:49,269 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) [2021-05-21 20:00:49,269 INFO L276 IsEmpty]: Start isEmpty. Operand 1268 states and 3355 transitions. [2021-05-21 20:00:49,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 20:00:49,270 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:00:49,270 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:00:49,270 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable292 [2021-05-21 20:00:49,270 INFO L430 AbstractCegarLoop]: === Iteration 294 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 20:00:49,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:00:49,271 INFO L82 PathProgramCache]: Analyzing trace with hash 1222936682, now seen corresponding path program 292 times [2021-05-21 20:00:49,271 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:00:49,271 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [185938281] [2021-05-21 20:00:49,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:00:49,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:00:49,319 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:00:49,319 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:00:49,319 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [185938281] [2021-05-21 20:00:49,319 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [185938281] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:00:49,319 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:00:49,319 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:00:49,319 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [750690324] [2021-05-21 20:00:49,319 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-21 20:00:49,320 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:00:49,320 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-21 20:00:49,320 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-05-21 20:00:49,320 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) [2021-05-21 20:00:49,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:00:49,437 INFO L93 Difference]: Finished difference Result 1405 states and 3686 transitions. [2021-05-21 20:00:49,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-21 20:00:49,437 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 [2021-05-21 20:00:49,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:00:49,438 INFO L225 Difference]: With dead ends: 1405 [2021-05-21 20:00:49,438 INFO L226 Difference]: Without dead ends: 1180 [2021-05-21 20:00:49,438 INFO L777 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 [2021-05-21 20:00:49,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1180 states. [2021-05-21 20:00:49,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1180 to 1124. [2021-05-21 20:00:49,452 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) [2021-05-21 20:00:49,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1124 states to 1124 states and 2972 transitions. [2021-05-21 20:00:49,453 INFO L78 Accepts]: Start accepts. Automaton has 1124 states and 2972 transitions. Word has length 26 [2021-05-21 20:00:49,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:00:49,453 INFO L482 AbstractCegarLoop]: Abstraction has 1124 states and 2972 transitions. [2021-05-21 20:00:49,453 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) [2021-05-21 20:00:49,453 INFO L276 IsEmpty]: Start isEmpty. Operand 1124 states and 2972 transitions. [2021-05-21 20:00:49,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 20:00:49,454 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:00:49,454 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:00:49,454 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable293 [2021-05-21 20:00:49,454 INFO L430 AbstractCegarLoop]: === Iteration 295 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 20:00:49,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:00:49,454 INFO L82 PathProgramCache]: Analyzing trace with hash 1525154592, now seen corresponding path program 293 times [2021-05-21 20:00:49,455 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:00:49,455 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2021471042] [2021-05-21 20:00:49,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:00:49,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:00:49,499 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:00:49,499 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:00:49,499 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2021471042] [2021-05-21 20:00:49,499 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2021471042] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:00:49,499 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:00:49,499 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:00:49,499 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1183380866] [2021-05-21 20:00:49,499 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-21 20:00:49,500 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:00:49,500 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-21 20:00:49,500 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-05-21 20:00:49,500 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) [2021-05-21 20:00:49,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:00:49,618 INFO L93 Difference]: Finished difference Result 1284 states and 3343 transitions. [2021-05-21 20:00:49,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-21 20:00:49,619 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 [2021-05-21 20:00:49,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:00:49,620 INFO L225 Difference]: With dead ends: 1284 [2021-05-21 20:00:49,620 INFO L226 Difference]: Without dead ends: 1064 [2021-05-21 20:00:49,620 INFO L777 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 [2021-05-21 20:00:49,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1064 states. [2021-05-21 20:00:49,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1064 to 1040. [2021-05-21 20:00:49,628 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) [2021-05-21 20:00:49,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1040 states to 1040 states and 2714 transitions. [2021-05-21 20:00:49,629 INFO L78 Accepts]: Start accepts. Automaton has 1040 states and 2714 transitions. Word has length 26 [2021-05-21 20:00:49,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:00:49,629 INFO L482 AbstractCegarLoop]: Abstraction has 1040 states and 2714 transitions. [2021-05-21 20:00:49,629 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) [2021-05-21 20:00:49,629 INFO L276 IsEmpty]: Start isEmpty. Operand 1040 states and 2714 transitions. [2021-05-21 20:00:49,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 20:00:49,630 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:00:49,630 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:00:49,630 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable294 [2021-05-21 20:00:49,630 INFO L430 AbstractCegarLoop]: === Iteration 296 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 20:00:49,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:00:49,631 INFO L82 PathProgramCache]: Analyzing trace with hash 665569598, now seen corresponding path program 294 times [2021-05-21 20:00:49,631 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:00:49,631 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2140556302] [2021-05-21 20:00:49,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:00:49,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:00:49,685 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:00:49,685 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:00:49,685 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2140556302] [2021-05-21 20:00:49,685 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2140556302] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:00:49,685 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:00:49,685 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-21 20:00:49,685 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [384107568] [2021-05-21 20:00:49,685 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:00:49,685 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:00:49,685 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:00:49,686 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:00:49,686 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) [2021-05-21 20:00:49,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:00:49,834 INFO L93 Difference]: Finished difference Result 1182 states and 3054 transitions. [2021-05-21 20:00:49,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:00:49,835 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-05-21 20:00:49,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:00:49,836 INFO L225 Difference]: With dead ends: 1182 [2021-05-21 20:00:49,836 INFO L226 Difference]: Without dead ends: 982 [2021-05-21 20:00:49,836 INFO L777 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 [2021-05-21 20:00:49,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 982 states. [2021-05-21 20:00:49,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 982 to 950. [2021-05-21 20:00:49,843 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) [2021-05-21 20:00:49,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 950 states to 950 states and 2488 transitions. [2021-05-21 20:00:49,844 INFO L78 Accepts]: Start accepts. Automaton has 950 states and 2488 transitions. Word has length 26 [2021-05-21 20:00:49,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:00:49,844 INFO L482 AbstractCegarLoop]: Abstraction has 950 states and 2488 transitions. [2021-05-21 20:00:49,844 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:00:49,844 INFO L276 IsEmpty]: Start isEmpty. Operand 950 states and 2488 transitions. [2021-05-21 20:00:49,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 20:00:49,845 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:00:49,845 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:00:49,845 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable295 [2021-05-21 20:00:49,845 INFO L430 AbstractCegarLoop]: === Iteration 297 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 20:00:49,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:00:49,846 INFO L82 PathProgramCache]: Analyzing trace with hash 1307346048, now seen corresponding path program 295 times [2021-05-21 20:00:49,846 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:00:49,846 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [235932545] [2021-05-21 20:00:49,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:00:49,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:00:49,903 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:00:49,904 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:00:49,904 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [235932545] [2021-05-21 20:00:49,904 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [235932545] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:00:49,904 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:00:49,904 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-21 20:00:49,904 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1361698843] [2021-05-21 20:00:49,904 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:00:49,904 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:00:49,904 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:00:49,904 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:00:49,904 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) [2021-05-21 20:00:50,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:00:50,069 INFO L93 Difference]: Finished difference Result 1068 states and 2776 transitions. [2021-05-21 20:00:50,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:00:50,069 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-05-21 20:00:50,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:00:50,070 INFO L225 Difference]: With dead ends: 1068 [2021-05-21 20:00:50,070 INFO L226 Difference]: Without dead ends: 975 [2021-05-21 20:00:50,070 INFO L777 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 [2021-05-21 20:00:50,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 975 states. [2021-05-21 20:00:50,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 975 to 956. [2021-05-21 20:00:50,077 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) [2021-05-21 20:00:50,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 956 states to 956 states and 2498 transitions. [2021-05-21 20:00:50,078 INFO L78 Accepts]: Start accepts. Automaton has 956 states and 2498 transitions. Word has length 26 [2021-05-21 20:00:50,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:00:50,078 INFO L482 AbstractCegarLoop]: Abstraction has 956 states and 2498 transitions. [2021-05-21 20:00:50,079 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) [2021-05-21 20:00:50,079 INFO L276 IsEmpty]: Start isEmpty. Operand 956 states and 2498 transitions. [2021-05-21 20:00:50,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 20:00:50,079 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:00:50,079 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:00:50,079 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable296 [2021-05-21 20:00:50,079 INFO L430 AbstractCegarLoop]: === Iteration 298 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 20:00:50,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:00:50,080 INFO L82 PathProgramCache]: Analyzing trace with hash 399094912, now seen corresponding path program 296 times [2021-05-21 20:00:50,080 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:00:50,080 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1590514620] [2021-05-21 20:00:50,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:00:50,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:00:50,134 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:00:50,134 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:00:50,134 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1590514620] [2021-05-21 20:00:50,134 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1590514620] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:00:50,134 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:00:50,134 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-21 20:00:50,134 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2047390645] [2021-05-21 20:00:50,134 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:00:50,134 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:00:50,134 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:00:50,134 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:00:50,135 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) [2021-05-21 20:00:50,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:00:50,298 INFO L93 Difference]: Finished difference Result 1078 states and 2806 transitions. [2021-05-21 20:00:50,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:00:50,298 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-05-21 20:00:50,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:00:50,299 INFO L225 Difference]: With dead ends: 1078 [2021-05-21 20:00:50,299 INFO L226 Difference]: Without dead ends: 1003 [2021-05-21 20:00:50,299 INFO L777 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 [2021-05-21 20:00:50,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1003 states. [2021-05-21 20:00:50,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1003 to 959. [2021-05-21 20:00:50,307 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) [2021-05-21 20:00:50,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 959 states to 959 states and 2509 transitions. [2021-05-21 20:00:50,308 INFO L78 Accepts]: Start accepts. Automaton has 959 states and 2509 transitions. Word has length 26 [2021-05-21 20:00:50,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:00:50,308 INFO L482 AbstractCegarLoop]: Abstraction has 959 states and 2509 transitions. [2021-05-21 20:00:50,308 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:00:50,308 INFO L276 IsEmpty]: Start isEmpty. Operand 959 states and 2509 transitions. [2021-05-21 20:00:50,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 20:00:50,309 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:00:50,309 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:00:50,309 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable297 [2021-05-21 20:00:50,309 INFO L430 AbstractCegarLoop]: === Iteration 299 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 20:00:50,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:00:50,309 INFO L82 PathProgramCache]: Analyzing trace with hash 1268539520, now seen corresponding path program 297 times [2021-05-21 20:00:50,309 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:00:50,309 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1487710172] [2021-05-21 20:00:50,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:00:50,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:00:50,363 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:00:50,363 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:00:50,363 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1487710172] [2021-05-21 20:00:50,363 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1487710172] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:00:50,363 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:00:50,363 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-21 20:00:50,363 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [384547984] [2021-05-21 20:00:50,363 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:00:50,363 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:00:50,364 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:00:50,364 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:00:50,364 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) [2021-05-21 20:00:50,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:00:50,520 INFO L93 Difference]: Finished difference Result 1113 states and 2881 transitions. [2021-05-21 20:00:50,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:00:50,520 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 [2021-05-21 20:00:50,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:00:50,521 INFO L225 Difference]: With dead ends: 1113 [2021-05-21 20:00:50,521 INFO L226 Difference]: Without dead ends: 981 [2021-05-21 20:00:50,521 INFO L777 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 [2021-05-21 20:00:50,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 981 states. [2021-05-21 20:00:50,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 981 to 941. [2021-05-21 20:00:50,529 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) [2021-05-21 20:00:50,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 941 states to 941 states and 2463 transitions. [2021-05-21 20:00:50,530 INFO L78 Accepts]: Start accepts. Automaton has 941 states and 2463 transitions. Word has length 26 [2021-05-21 20:00:50,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:00:50,530 INFO L482 AbstractCegarLoop]: Abstraction has 941 states and 2463 transitions. [2021-05-21 20:00:50,530 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) [2021-05-21 20:00:50,530 INFO L276 IsEmpty]: Start isEmpty. Operand 941 states and 2463 transitions. [2021-05-21 20:00:50,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 20:00:50,531 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:00:50,531 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:00:50,531 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable298 [2021-05-21 20:00:50,531 INFO L430 AbstractCegarLoop]: === Iteration 300 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 20:00:50,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:00:50,531 INFO L82 PathProgramCache]: Analyzing trace with hash 1319670878, now seen corresponding path program 298 times [2021-05-21 20:00:50,532 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:00:50,532 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [657591024] [2021-05-21 20:00:50,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:00:50,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:00:50,586 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:00:50,586 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:00:50,586 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [657591024] [2021-05-21 20:00:50,586 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [657591024] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:00:50,586 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:00:50,586 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-21 20:00:50,586 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [383520] [2021-05-21 20:00:50,586 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:00:50,586 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:00:50,586 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:00:50,586 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:00:50,586 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) [2021-05-21 20:00:50,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:00:50,740 INFO L93 Difference]: Finished difference Result 1045 states and 2715 transitions. [2021-05-21 20:00:50,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:00:50,740 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-05-21 20:00:50,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:00:50,741 INFO L225 Difference]: With dead ends: 1045 [2021-05-21 20:00:50,741 INFO L226 Difference]: Without dead ends: 955 [2021-05-21 20:00:50,742 INFO L777 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 [2021-05-21 20:00:50,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 955 states. [2021-05-21 20:00:50,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 955 to 926. [2021-05-21 20:00:50,749 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) [2021-05-21 20:00:50,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 926 states to 926 states and 2430 transitions. [2021-05-21 20:00:50,750 INFO L78 Accepts]: Start accepts. Automaton has 926 states and 2430 transitions. Word has length 26 [2021-05-21 20:00:50,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:00:50,750 INFO L482 AbstractCegarLoop]: Abstraction has 926 states and 2430 transitions. [2021-05-21 20:00:50,750 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:00:50,750 INFO L276 IsEmpty]: Start isEmpty. Operand 926 states and 2430 transitions. [2021-05-21 20:00:50,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 20:00:50,751 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:00:50,751 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:00:50,751 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable299 [2021-05-21 20:00:50,751 INFO L430 AbstractCegarLoop]: === Iteration 301 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 20:00:50,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:00:50,751 INFO L82 PathProgramCache]: Analyzing trace with hash -1696776638, now seen corresponding path program 299 times [2021-05-21 20:00:50,752 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:00:50,752 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [643884935] [2021-05-21 20:00:50,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:00:50,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:00:50,804 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:00:50,804 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:00:50,804 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [643884935] [2021-05-21 20:00:50,804 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [643884935] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:00:50,804 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:00:50,804 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-21 20:00:50,804 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134246326] [2021-05-21 20:00:50,805 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:00:50,805 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:00:50,805 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:00:50,805 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:00:50,805 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) [2021-05-21 20:00:50,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:00:50,962 INFO L93 Difference]: Finished difference Result 1077 states and 2798 transitions. [2021-05-21 20:00:50,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:00:50,962 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-05-21 20:00:50,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:00:50,963 INFO L225 Difference]: With dead ends: 1077 [2021-05-21 20:00:50,963 INFO L226 Difference]: Without dead ends: 984 [2021-05-21 20:00:50,963 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 45.8ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:00:50,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 984 states. [2021-05-21 20:00:50,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 984 to 926. [2021-05-21 20:00:50,971 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) [2021-05-21 20:00:50,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 926 states to 926 states and 2422 transitions. [2021-05-21 20:00:50,972 INFO L78 Accepts]: Start accepts. Automaton has 926 states and 2422 transitions. Word has length 26 [2021-05-21 20:00:50,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:00:50,972 INFO L482 AbstractCegarLoop]: Abstraction has 926 states and 2422 transitions. [2021-05-21 20:00:50,972 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:00:50,972 INFO L276 IsEmpty]: Start isEmpty. Operand 926 states and 2422 transitions. [2021-05-21 20:00:50,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 20:00:50,973 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:00:50,973 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:00:50,973 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable300 [2021-05-21 20:00:50,973 INFO L430 AbstractCegarLoop]: === Iteration 302 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 20:00:50,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:00:50,973 INFO L82 PathProgramCache]: Analyzing trace with hash 810733658, now seen corresponding path program 300 times [2021-05-21 20:00:50,973 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:00:50,973 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [74032952] [2021-05-21 20:00:50,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:00:50,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:00:51,027 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:00:51,027 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:00:51,027 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [74032952] [2021-05-21 20:00:51,027 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [74032952] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:00:51,027 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:00:51,027 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-21 20:00:51,027 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1681840071] [2021-05-21 20:00:51,027 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:00:51,027 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:00:51,027 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:00:51,027 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:00:51,027 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) [2021-05-21 20:00:51,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:00:51,181 INFO L93 Difference]: Finished difference Result 1095 states and 2837 transitions. [2021-05-21 20:00:51,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:00:51,181 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-05-21 20:00:51,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:00:51,182 INFO L225 Difference]: With dead ends: 1095 [2021-05-21 20:00:51,182 INFO L226 Difference]: Without dead ends: 1012 [2021-05-21 20:00:51,182 INFO L777 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 [2021-05-21 20:00:51,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1012 states. [2021-05-21 20:00:51,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1012 to 914. [2021-05-21 20:00:51,190 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) [2021-05-21 20:00:51,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 914 states to 914 states and 2395 transitions. [2021-05-21 20:00:51,191 INFO L78 Accepts]: Start accepts. Automaton has 914 states and 2395 transitions. Word has length 26 [2021-05-21 20:00:51,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:00:51,191 INFO L482 AbstractCegarLoop]: Abstraction has 914 states and 2395 transitions. [2021-05-21 20:00:51,191 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:00:51,191 INFO L276 IsEmpty]: Start isEmpty. Operand 914 states and 2395 transitions. [2021-05-21 20:00:51,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 20:00:51,192 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:00:51,192 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:00:51,192 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable301 [2021-05-21 20:00:51,192 INFO L430 AbstractCegarLoop]: === Iteration 303 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 20:00:51,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:00:51,192 INFO L82 PathProgramCache]: Analyzing trace with hash -758194884, now seen corresponding path program 301 times [2021-05-21 20:00:51,192 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:00:51,192 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2074524303] [2021-05-21 20:00:51,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:00:51,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:00:51,246 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:00:51,246 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:00:51,246 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2074524303] [2021-05-21 20:00:51,246 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2074524303] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:00:51,246 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:00:51,246 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-21 20:00:51,246 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [896797031] [2021-05-21 20:00:51,246 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:00:51,247 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:00:51,247 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:00:51,247 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:00:51,247 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) [2021-05-21 20:00:51,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:00:51,402 INFO L93 Difference]: Finished difference Result 1015 states and 2644 transitions. [2021-05-21 20:00:51,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:00:51,402 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 [2021-05-21 20:00:51,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:00:51,403 INFO L225 Difference]: With dead ends: 1015 [2021-05-21 20:00:51,403 INFO L226 Difference]: Without dead ends: 928 [2021-05-21 20:00:51,403 INFO L777 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 [2021-05-21 20:00:51,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 928 states. [2021-05-21 20:00:51,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 928 to 876. [2021-05-21 20:00:51,411 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) [2021-05-21 20:00:51,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 876 states to 876 states and 2300 transitions. [2021-05-21 20:00:51,412 INFO L78 Accepts]: Start accepts. Automaton has 876 states and 2300 transitions. Word has length 26 [2021-05-21 20:00:51,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:00:51,412 INFO L482 AbstractCegarLoop]: Abstraction has 876 states and 2300 transitions. [2021-05-21 20:00:51,412 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:00:51,412 INFO L276 IsEmpty]: Start isEmpty. Operand 876 states and 2300 transitions. [2021-05-21 20:00:51,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 20:00:51,413 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:00:51,413 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:00:51,413 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable302 [2021-05-21 20:00:51,413 INFO L430 AbstractCegarLoop]: === Iteration 304 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 20:00:51,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:00:51,413 INFO L82 PathProgramCache]: Analyzing trace with hash -504509764, now seen corresponding path program 302 times [2021-05-21 20:00:51,413 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:00:51,413 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [660964920] [2021-05-21 20:00:51,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:00:51,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:00:51,471 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:00:51,472 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:00:51,472 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [660964920] [2021-05-21 20:00:51,472 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [660964920] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:00:51,472 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:00:51,472 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-21 20:00:51,472 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [518252529] [2021-05-21 20:00:51,472 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:00:51,472 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:00:51,472 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:00:51,472 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:00:51,472 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) [2021-05-21 20:00:51,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:00:51,624 INFO L93 Difference]: Finished difference Result 1024 states and 2650 transitions. [2021-05-21 20:00:51,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:00:51,624 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 [2021-05-21 20:00:51,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:00:51,625 INFO L225 Difference]: With dead ends: 1024 [2021-05-21 20:00:51,625 INFO L226 Difference]: Without dead ends: 949 [2021-05-21 20:00:51,625 INFO L777 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 [2021-05-21 20:00:51,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 949 states. [2021-05-21 20:00:51,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 949 to 881. [2021-05-21 20:00:51,632 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) [2021-05-21 20:00:51,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 881 states to 881 states and 2316 transitions. [2021-05-21 20:00:51,633 INFO L78 Accepts]: Start accepts. Automaton has 881 states and 2316 transitions. Word has length 26 [2021-05-21 20:00:51,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:00:51,634 INFO L482 AbstractCegarLoop]: Abstraction has 881 states and 2316 transitions. [2021-05-21 20:00:51,634 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:00:51,634 INFO L276 IsEmpty]: Start isEmpty. Operand 881 states and 2316 transitions. [2021-05-21 20:00:51,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 20:00:51,634 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:00:51,634 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:00:51,634 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable303 [2021-05-21 20:00:51,634 INFO L430 AbstractCegarLoop]: === Iteration 305 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 20:00:51,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:00:51,635 INFO L82 PathProgramCache]: Analyzing trace with hash 364934844, now seen corresponding path program 303 times [2021-05-21 20:00:51,635 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:00:51,635 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [435942522] [2021-05-21 20:00:51,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:00:51,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:00:51,702 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:00:51,703 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:00:51,703 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [435942522] [2021-05-21 20:00:51,703 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [435942522] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:00:51,703 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:00:51,703 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-21 20:00:51,703 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [577286035] [2021-05-21 20:00:51,703 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:00:51,703 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:00:51,703 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:00:51,703 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:00:51,704 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) [2021-05-21 20:00:51,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:00:51,862 INFO L93 Difference]: Finished difference Result 1013 states and 2642 transitions. [2021-05-21 20:00:51,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:00:51,862 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 [2021-05-21 20:00:51,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:00:51,863 INFO L225 Difference]: With dead ends: 1013 [2021-05-21 20:00:51,863 INFO L226 Difference]: Without dead ends: 912 [2021-05-21 20:00:51,863 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 59.4ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:00:51,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 912 states. [2021-05-21 20:00:51,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 912 to 880. [2021-05-21 20:00:51,870 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) [2021-05-21 20:00:51,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 880 states to 880 states and 2312 transitions. [2021-05-21 20:00:51,871 INFO L78 Accepts]: Start accepts. Automaton has 880 states and 2312 transitions. Word has length 26 [2021-05-21 20:00:51,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:00:51,871 INFO L482 AbstractCegarLoop]: Abstraction has 880 states and 2312 transitions. [2021-05-21 20:00:51,871 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) [2021-05-21 20:00:51,871 INFO L276 IsEmpty]: Start isEmpty. Operand 880 states and 2312 transitions. [2021-05-21 20:00:51,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 20:00:51,872 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:00:51,872 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:00:51,872 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable304 [2021-05-21 20:00:51,872 INFO L430 AbstractCegarLoop]: === Iteration 306 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 20:00:51,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:00:51,872 INFO L82 PathProgramCache]: Analyzing trace with hash -1103776386, now seen corresponding path program 304 times [2021-05-21 20:00:51,872 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:00:51,872 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1629163256] [2021-05-21 20:00:51,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:00:51,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:00:51,927 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:00:51,927 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:00:51,927 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1629163256] [2021-05-21 20:00:51,927 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1629163256] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:00:51,927 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:00:51,927 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-21 20:00:51,927 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [306029962] [2021-05-21 20:00:51,928 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:00:51,928 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:00:51,928 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:00:51,928 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:00:51,928 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) [2021-05-21 20:00:52,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:00:52,079 INFO L93 Difference]: Finished difference Result 1005 states and 2609 transitions. [2021-05-21 20:00:52,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:00:52,079 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-05-21 20:00:52,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:00:52,080 INFO L225 Difference]: With dead ends: 1005 [2021-05-21 20:00:52,080 INFO L226 Difference]: Without dead ends: 924 [2021-05-21 20:00:52,081 INFO L777 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 [2021-05-21 20:00:52,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 924 states. [2021-05-21 20:00:52,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 924 to 882. [2021-05-21 20:00:52,088 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) [2021-05-21 20:00:52,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 882 states to 882 states and 2320 transitions. [2021-05-21 20:00:52,089 INFO L78 Accepts]: Start accepts. Automaton has 882 states and 2320 transitions. Word has length 26 [2021-05-21 20:00:52,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:00:52,089 INFO L482 AbstractCegarLoop]: Abstraction has 882 states and 2320 transitions. [2021-05-21 20:00:52,089 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:00:52,089 INFO L276 IsEmpty]: Start isEmpty. Operand 882 states and 2320 transitions. [2021-05-21 20:00:52,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 20:00:52,090 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:00:52,090 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:00:52,090 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable305 [2021-05-21 20:00:52,090 INFO L430 AbstractCegarLoop]: === Iteration 307 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 20:00:52,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:00:52,090 INFO L82 PathProgramCache]: Analyzing trace with hash -711317730, now seen corresponding path program 305 times [2021-05-21 20:00:52,090 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:00:52,090 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [200772164] [2021-05-21 20:00:52,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:00:52,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:00:52,157 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:00:52,157 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:00:52,157 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [200772164] [2021-05-21 20:00:52,157 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [200772164] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:00:52,157 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:00:52,158 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-21 20:00:52,158 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [103076895] [2021-05-21 20:00:52,158 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:00:52,158 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:00:52,158 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:00:52,158 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:00:52,158 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) [2021-05-21 20:00:52,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:00:52,311 INFO L93 Difference]: Finished difference Result 1011 states and 2638 transitions. [2021-05-21 20:00:52,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:00:52,312 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-05-21 20:00:52,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:00:52,313 INFO L225 Difference]: With dead ends: 1011 [2021-05-21 20:00:52,313 INFO L226 Difference]: Without dead ends: 936 [2021-05-21 20:00:52,313 INFO L777 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 [2021-05-21 20:00:52,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 936 states. [2021-05-21 20:00:52,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 936 to 886. [2021-05-21 20:00:52,320 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) [2021-05-21 20:00:52,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 886 states to 886 states and 2334 transitions. [2021-05-21 20:00:52,321 INFO L78 Accepts]: Start accepts. Automaton has 886 states and 2334 transitions. Word has length 26 [2021-05-21 20:00:52,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:00:52,321 INFO L482 AbstractCegarLoop]: Abstraction has 886 states and 2334 transitions. [2021-05-21 20:00:52,321 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:00:52,321 INFO L276 IsEmpty]: Start isEmpty. Operand 886 states and 2334 transitions. [2021-05-21 20:00:52,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 20:00:52,322 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:00:52,322 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:00:52,322 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable306 [2021-05-21 20:00:52,322 INFO L430 AbstractCegarLoop]: === Iteration 308 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 20:00:52,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:00:52,322 INFO L82 PathProgramCache]: Analyzing trace with hash 158126878, now seen corresponding path program 306 times [2021-05-21 20:00:52,322 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:00:52,322 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1787775237] [2021-05-21 20:00:52,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:00:52,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:00:52,378 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:00:52,378 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:00:52,378 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1787775237] [2021-05-21 20:00:52,378 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1787775237] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:00:52,378 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:00:52,378 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-21 20:00:52,378 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [492434265] [2021-05-21 20:00:52,378 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:00:52,378 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:00:52,378 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:00:52,378 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:00:52,379 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) [2021-05-21 20:00:52,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:00:52,539 INFO L93 Difference]: Finished difference Result 1026 states and 2678 transitions. [2021-05-21 20:00:52,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:00:52,539 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-05-21 20:00:52,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:00:52,540 INFO L225 Difference]: With dead ends: 1026 [2021-05-21 20:00:52,540 INFO L226 Difference]: Without dead ends: 925 [2021-05-21 20:00:52,540 INFO L777 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 [2021-05-21 20:00:52,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 925 states. [2021-05-21 20:00:52,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 925 to 883. [2021-05-21 20:00:52,548 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) [2021-05-21 20:00:52,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 883 states to 883 states and 2325 transitions. [2021-05-21 20:00:52,549 INFO L78 Accepts]: Start accepts. Automaton has 883 states and 2325 transitions. Word has length 26 [2021-05-21 20:00:52,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:00:52,549 INFO L482 AbstractCegarLoop]: Abstraction has 883 states and 2325 transitions. [2021-05-21 20:00:52,549 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) [2021-05-21 20:00:52,549 INFO L276 IsEmpty]: Start isEmpty. Operand 883 states and 2325 transitions. [2021-05-21 20:00:52,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 20:00:52,549 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:00:52,550 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:00:52,550 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable307 [2021-05-21 20:00:52,550 INFO L430 AbstractCegarLoop]: === Iteration 309 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 20:00:52,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:00:52,550 INFO L82 PathProgramCache]: Analyzing trace with hash 2078810748, now seen corresponding path program 307 times [2021-05-21 20:00:52,550 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:00:52,550 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [671284693] [2021-05-21 20:00:52,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:00:52,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:00:52,605 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:00:52,605 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:00:52,605 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [671284693] [2021-05-21 20:00:52,605 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [671284693] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:00:52,605 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:00:52,605 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-21 20:00:52,605 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [652529638] [2021-05-21 20:00:52,605 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:00:52,605 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:00:52,606 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:00:52,606 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:00:52,606 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) [2021-05-21 20:00:52,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:00:52,757 INFO L93 Difference]: Finished difference Result 993 states and 2589 transitions. [2021-05-21 20:00:52,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:00:52,757 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-05-21 20:00:52,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:00:52,758 INFO L225 Difference]: With dead ends: 993 [2021-05-21 20:00:52,758 INFO L226 Difference]: Without dead ends: 912 [2021-05-21 20:00:52,758 INFO L777 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 [2021-05-21 20:00:52,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 912 states. [2021-05-21 20:00:52,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 912 to 884. [2021-05-21 20:00:52,765 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) [2021-05-21 20:00:52,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 884 states to 884 states and 2326 transitions. [2021-05-21 20:00:52,766 INFO L78 Accepts]: Start accepts. Automaton has 884 states and 2326 transitions. Word has length 26 [2021-05-21 20:00:52,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:00:52,766 INFO L482 AbstractCegarLoop]: Abstraction has 884 states and 2326 transitions. [2021-05-21 20:00:52,766 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:00:52,766 INFO L276 IsEmpty]: Start isEmpty. Operand 884 states and 2326 transitions. [2021-05-21 20:00:52,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 20:00:52,767 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:00:52,767 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:00:52,767 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable308 [2021-05-21 20:00:52,767 INFO L430 AbstractCegarLoop]: === Iteration 310 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 20:00:52,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:00:52,767 INFO L82 PathProgramCache]: Analyzing trace with hash -96218856, now seen corresponding path program 308 times [2021-05-21 20:00:52,767 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:00:52,768 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [216595782] [2021-05-21 20:00:52,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:00:52,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:00:52,821 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:00:52,822 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:00:52,822 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [216595782] [2021-05-21 20:00:52,822 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [216595782] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:00:52,822 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:00:52,822 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-21 20:00:52,822 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [838751899] [2021-05-21 20:00:52,822 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:00:52,822 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:00:52,822 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:00:52,822 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:00:52,822 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) [2021-05-21 20:00:52,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:00:52,977 INFO L93 Difference]: Finished difference Result 999 states and 2604 transitions. [2021-05-21 20:00:52,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:00:52,977 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 [2021-05-21 20:00:52,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:00:52,978 INFO L225 Difference]: With dead ends: 999 [2021-05-21 20:00:52,978 INFO L226 Difference]: Without dead ends: 890 [2021-05-21 20:00:52,978 INFO L777 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 [2021-05-21 20:00:52,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 890 states. [2021-05-21 20:00:52,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 890 to 878. [2021-05-21 20:00:52,985 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) [2021-05-21 20:00:52,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 878 states to 878 states and 2313 transitions. [2021-05-21 20:00:52,986 INFO L78 Accepts]: Start accepts. Automaton has 878 states and 2313 transitions. Word has length 26 [2021-05-21 20:00:52,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:00:52,986 INFO L482 AbstractCegarLoop]: Abstraction has 878 states and 2313 transitions. [2021-05-21 20:00:52,986 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:00:52,986 INFO L276 IsEmpty]: Start isEmpty. Operand 878 states and 2313 transitions. [2021-05-21 20:00:52,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 20:00:52,987 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:00:52,987 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:00:52,987 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable309 [2021-05-21 20:00:52,987 INFO L430 AbstractCegarLoop]: === Iteration 311 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 20:00:52,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:00:52,988 INFO L82 PathProgramCache]: Analyzing trace with hash 408641760, now seen corresponding path program 309 times [2021-05-21 20:00:52,988 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:00:52,988 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1308261438] [2021-05-21 20:00:52,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:00:52,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:00:53,040 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:00:53,041 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:00:53,041 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1308261438] [2021-05-21 20:00:53,041 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1308261438] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:00:53,041 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:00:53,041 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-21 20:00:53,041 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [824144510] [2021-05-21 20:00:53,041 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:00:53,041 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:00:53,041 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:00:53,041 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:00:53,041 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) [2021-05-21 20:00:53,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:00:53,195 INFO L93 Difference]: Finished difference Result 1017 states and 2638 transitions. [2021-05-21 20:00:53,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:00:53,195 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 [2021-05-21 20:00:53,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:00:53,196 INFO L225 Difference]: With dead ends: 1017 [2021-05-21 20:00:53,196 INFO L226 Difference]: Without dead ends: 938 [2021-05-21 20:00:53,196 INFO L777 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 [2021-05-21 20:00:53,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 938 states. [2021-05-21 20:00:53,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 938 to 878. [2021-05-21 20:00:53,204 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) [2021-05-21 20:00:53,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 878 states to 878 states and 2313 transitions. [2021-05-21 20:00:53,205 INFO L78 Accepts]: Start accepts. Automaton has 878 states and 2313 transitions. Word has length 26 [2021-05-21 20:00:53,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:00:53,205 INFO L482 AbstractCegarLoop]: Abstraction has 878 states and 2313 transitions. [2021-05-21 20:00:53,205 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:00:53,205 INFO L276 IsEmpty]: Start isEmpty. Operand 878 states and 2313 transitions. [2021-05-21 20:00:53,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 20:00:53,206 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:00:53,206 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:00:53,206 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable310 [2021-05-21 20:00:53,206 INFO L430 AbstractCegarLoop]: === Iteration 312 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 20:00:53,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:00:53,206 INFO L82 PathProgramCache]: Analyzing trace with hash -983502786, now seen corresponding path program 310 times [2021-05-21 20:00:53,206 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:00:53,206 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1285632993] [2021-05-21 20:00:53,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:00:53,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:00:53,259 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:00:53,259 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:00:53,259 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1285632993] [2021-05-21 20:00:53,259 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1285632993] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:00:53,259 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:00:53,260 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-21 20:00:53,260 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [350641006] [2021-05-21 20:00:53,260 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:00:53,260 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:00:53,260 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:00:53,260 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:00:53,260 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) [2021-05-21 20:00:53,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:00:53,411 INFO L93 Difference]: Finished difference Result 986 states and 2573 transitions. [2021-05-21 20:00:53,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:00:53,412 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-05-21 20:00:53,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:00:53,412 INFO L225 Difference]: With dead ends: 986 [2021-05-21 20:00:53,412 INFO L226 Difference]: Without dead ends: 900 [2021-05-21 20:00:53,413 INFO L777 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 [2021-05-21 20:00:53,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 900 states. [2021-05-21 20:00:53,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 900 to 871. [2021-05-21 20:00:53,420 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) [2021-05-21 20:00:53,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 871 states to 871 states and 2296 transitions. [2021-05-21 20:00:53,421 INFO L78 Accepts]: Start accepts. Automaton has 871 states and 2296 transitions. Word has length 26 [2021-05-21 20:00:53,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:00:53,421 INFO L482 AbstractCegarLoop]: Abstraction has 871 states and 2296 transitions. [2021-05-21 20:00:53,421 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:00:53,421 INFO L276 IsEmpty]: Start isEmpty. Operand 871 states and 2296 transitions. [2021-05-21 20:00:53,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 20:00:53,422 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:00:53,422 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:00:53,422 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable311 [2021-05-21 20:00:53,422 INFO L430 AbstractCegarLoop]: === Iteration 313 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 20:00:53,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:00:53,422 INFO L82 PathProgramCache]: Analyzing trace with hash -193149290, now seen corresponding path program 311 times [2021-05-21 20:00:53,422 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:00:53,422 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [311064610] [2021-05-21 20:00:53,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:00:53,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:00:53,477 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:00:53,477 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:00:53,477 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [311064610] [2021-05-21 20:00:53,477 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [311064610] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:00:53,477 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:00:53,477 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-21 20:00:53,477 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1489822713] [2021-05-21 20:00:53,478 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:00:53,478 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:00:53,478 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:00:53,478 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:00:53,478 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) [2021-05-21 20:00:53,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:00:53,632 INFO L93 Difference]: Finished difference Result 1044 states and 2714 transitions. [2021-05-21 20:00:53,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:00:53,632 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 [2021-05-21 20:00:53,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:00:53,633 INFO L225 Difference]: With dead ends: 1044 [2021-05-21 20:00:53,633 INFO L226 Difference]: Without dead ends: 907 [2021-05-21 20:00:53,633 INFO L777 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 [2021-05-21 20:00:53,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 907 states. [2021-05-21 20:00:53,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 907 to 883. [2021-05-21 20:00:53,640 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) [2021-05-21 20:00:53,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 883 states to 883 states and 2316 transitions. [2021-05-21 20:00:53,641 INFO L78 Accepts]: Start accepts. Automaton has 883 states and 2316 transitions. Word has length 26 [2021-05-21 20:00:53,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:00:53,642 INFO L482 AbstractCegarLoop]: Abstraction has 883 states and 2316 transitions. [2021-05-21 20:00:53,642 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) [2021-05-21 20:00:53,642 INFO L276 IsEmpty]: Start isEmpty. Operand 883 states and 2316 transitions. [2021-05-21 20:00:53,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 20:00:53,642 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:00:53,642 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:00:53,643 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable312 [2021-05-21 20:00:53,643 INFO L430 AbstractCegarLoop]: === Iteration 314 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 20:00:53,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:00:53,643 INFO L82 PathProgramCache]: Analyzing trace with hash -1101400426, now seen corresponding path program 312 times [2021-05-21 20:00:53,643 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:00:53,643 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1583742493] [2021-05-21 20:00:53,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:00:53,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:00:53,701 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:00:53,701 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:00:53,701 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1583742493] [2021-05-21 20:00:53,701 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1583742493] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:00:53,701 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:00:53,701 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-21 20:00:53,702 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [398425940] [2021-05-21 20:00:53,702 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:00:53,702 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:00:53,702 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:00:53,702 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:00:53,702 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) [2021-05-21 20:00:53,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:00:53,853 INFO L93 Difference]: Finished difference Result 1036 states and 2690 transitions. [2021-05-21 20:00:53,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:00:53,853 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-05-21 20:00:53,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:00:53,854 INFO L225 Difference]: With dead ends: 1036 [2021-05-21 20:00:53,854 INFO L226 Difference]: Without dead ends: 910 [2021-05-21 20:00:53,854 INFO L777 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 [2021-05-21 20:00:53,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 910 states. [2021-05-21 20:00:53,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 910 to 896. [2021-05-21 20:00:53,861 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) [2021-05-21 20:00:53,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 896 states to 896 states and 2337 transitions. [2021-05-21 20:00:53,862 INFO L78 Accepts]: Start accepts. Automaton has 896 states and 2337 transitions. Word has length 26 [2021-05-21 20:00:53,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:00:53,862 INFO L482 AbstractCegarLoop]: Abstraction has 896 states and 2337 transitions. [2021-05-21 20:00:53,862 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:00:53,862 INFO L276 IsEmpty]: Start isEmpty. Operand 896 states and 2337 transitions. [2021-05-21 20:00:53,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 20:00:53,863 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:00:53,863 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:00:53,863 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable313 [2021-05-21 20:00:53,863 INFO L430 AbstractCegarLoop]: === Iteration 315 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 20:00:53,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:00:53,863 INFO L82 PathProgramCache]: Analyzing trace with hash -180824460, now seen corresponding path program 313 times [2021-05-21 20:00:53,863 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:00:53,863 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [332370545] [2021-05-21 20:00:53,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:00:53,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:00:53,926 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:00:53,926 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:00:53,926 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [332370545] [2021-05-21 20:00:53,927 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [332370545] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:00:53,927 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:00:53,927 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-21 20:00:53,927 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1456773551] [2021-05-21 20:00:53,927 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:00:53,927 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:00:53,927 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:00:53,927 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:00:53,927 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) [2021-05-21 20:00:54,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:00:54,081 INFO L93 Difference]: Finished difference Result 1048 states and 2702 transitions. [2021-05-21 20:00:54,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:00:54,082 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 [2021-05-21 20:00:54,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:00:54,082 INFO L225 Difference]: With dead ends: 1048 [2021-05-21 20:00:54,083 INFO L226 Difference]: Without dead ends: 914 [2021-05-21 20:00:54,083 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 56.0ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:00:54,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 914 states. [2021-05-21 20:00:54,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 914 to 884. [2021-05-21 20:00:54,090 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) [2021-05-21 20:00:54,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 884 states to 884 states and 2305 transitions. [2021-05-21 20:00:54,091 INFO L78 Accepts]: Start accepts. Automaton has 884 states and 2305 transitions. Word has length 26 [2021-05-21 20:00:54,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:00:54,091 INFO L482 AbstractCegarLoop]: Abstraction has 884 states and 2305 transitions. [2021-05-21 20:00:54,091 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:00:54,091 INFO L276 IsEmpty]: Start isEmpty. Operand 884 states and 2305 transitions. [2021-05-21 20:00:54,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 20:00:54,092 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:00:54,092 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:00:54,092 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable314 [2021-05-21 20:00:54,092 INFO L430 AbstractCegarLoop]: === Iteration 316 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 20:00:54,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:00:54,092 INFO L82 PathProgramCache]: Analyzing trace with hash -710790132, now seen corresponding path program 314 times [2021-05-21 20:00:54,092 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:00:54,092 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1852650805] [2021-05-21 20:00:54,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:00:54,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:00:54,146 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:00:54,146 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:00:54,146 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1852650805] [2021-05-21 20:00:54,146 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1852650805] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:00:54,147 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:00:54,147 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-21 20:00:54,147 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [834759153] [2021-05-21 20:00:54,147 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:00:54,147 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:00:54,147 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:00:54,147 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:00:54,147 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) [2021-05-21 20:00:54,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:00:54,298 INFO L93 Difference]: Finished difference Result 1011 states and 2623 transitions. [2021-05-21 20:00:54,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:00:54,298 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-05-21 20:00:54,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:00:54,299 INFO L225 Difference]: With dead ends: 1011 [2021-05-21 20:00:54,299 INFO L226 Difference]: Without dead ends: 865 [2021-05-21 20:00:54,299 INFO L777 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 [2021-05-21 20:00:54,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 865 states. [2021-05-21 20:00:54,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 865 to 845. [2021-05-21 20:00:54,306 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) [2021-05-21 20:00:54,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 845 states to 845 states and 2216 transitions. [2021-05-21 20:00:54,307 INFO L78 Accepts]: Start accepts. Automaton has 845 states and 2216 transitions. Word has length 26 [2021-05-21 20:00:54,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:00:54,307 INFO L482 AbstractCegarLoop]: Abstraction has 845 states and 2216 transitions. [2021-05-21 20:00:54,307 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:00:54,307 INFO L276 IsEmpty]: Start isEmpty. Operand 845 states and 2216 transitions. [2021-05-21 20:00:54,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 20:00:54,308 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:00:54,308 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:00:54,308 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable315 [2021-05-21 20:00:54,308 INFO L430 AbstractCegarLoop]: === Iteration 317 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 20:00:54,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:00:54,308 INFO L82 PathProgramCache]: Analyzing trace with hash -1898437632, now seen corresponding path program 315 times [2021-05-21 20:00:54,308 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:00:54,308 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1510452347] [2021-05-21 20:00:54,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:00:54,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:00:54,354 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:00:54,354 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:00:54,354 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1510452347] [2021-05-21 20:00:54,354 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1510452347] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:00:54,354 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:00:54,354 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:00:54,354 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1350738877] [2021-05-21 20:00:54,354 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-21 20:00:54,354 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:00:54,355 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-21 20:00:54,355 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-05-21 20:00:54,355 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) [2021-05-21 20:00:54,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:00:54,473 INFO L93 Difference]: Finished difference Result 978 states and 2521 transitions. [2021-05-21 20:00:54,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-21 20:00:54,473 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 [2021-05-21 20:00:54,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:00:54,474 INFO L225 Difference]: With dead ends: 978 [2021-05-21 20:00:54,474 INFO L226 Difference]: Without dead ends: 883 [2021-05-21 20:00:54,474 INFO L777 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 [2021-05-21 20:00:54,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 883 states. [2021-05-21 20:00:54,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 883 to 845. [2021-05-21 20:00:54,481 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) [2021-05-21 20:00:54,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 845 states to 845 states and 2212 transitions. [2021-05-21 20:00:54,482 INFO L78 Accepts]: Start accepts. Automaton has 845 states and 2212 transitions. Word has length 26 [2021-05-21 20:00:54,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:00:54,482 INFO L482 AbstractCegarLoop]: Abstraction has 845 states and 2212 transitions. [2021-05-21 20:00:54,482 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) [2021-05-21 20:00:54,482 INFO L276 IsEmpty]: Start isEmpty. Operand 845 states and 2212 transitions. [2021-05-21 20:00:54,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 20:00:54,483 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:00:54,483 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:00:54,483 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable316 [2021-05-21 20:00:54,483 INFO L430 AbstractCegarLoop]: === Iteration 318 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 20:00:54,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:00:54,483 INFO L82 PathProgramCache]: Analyzing trace with hash 1247061632, now seen corresponding path program 316 times [2021-05-21 20:00:54,483 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:00:54,483 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1232975839] [2021-05-21 20:00:54,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:00:54,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:00:54,537 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:00:54,537 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:00:54,537 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1232975839] [2021-05-21 20:00:54,537 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1232975839] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:00:54,537 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:00:54,537 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-21 20:00:54,537 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909148019] [2021-05-21 20:00:54,537 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:00:54,537 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:00:54,537 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:00:54,537 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:00:54,537 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) [2021-05-21 20:00:54,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:00:54,693 INFO L93 Difference]: Finished difference Result 986 states and 2546 transitions. [2021-05-21 20:00:54,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:00:54,694 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-05-21 20:00:54,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:00:54,695 INFO L225 Difference]: With dead ends: 986 [2021-05-21 20:00:54,695 INFO L226 Difference]: Without dead ends: 911 [2021-05-21 20:00:54,695 INFO L777 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 [2021-05-21 20:00:54,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 911 states. [2021-05-21 20:00:54,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 911 to 857. [2021-05-21 20:00:54,702 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) [2021-05-21 20:00:54,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 857 states to 857 states and 2235 transitions. [2021-05-21 20:00:54,703 INFO L78 Accepts]: Start accepts. Automaton has 857 states and 2235 transitions. Word has length 26 [2021-05-21 20:00:54,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:00:54,703 INFO L482 AbstractCegarLoop]: Abstraction has 857 states and 2235 transitions. [2021-05-21 20:00:54,703 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:00:54,703 INFO L276 IsEmpty]: Start isEmpty. Operand 857 states and 2235 transitions. [2021-05-21 20:00:54,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 20:00:54,704 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:00:54,704 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:00:54,704 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable317 [2021-05-21 20:00:54,704 INFO L430 AbstractCegarLoop]: === Iteration 319 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 20:00:54,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:00:54,704 INFO L82 PathProgramCache]: Analyzing trace with hash 2116506240, now seen corresponding path program 317 times [2021-05-21 20:00:54,704 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:00:54,704 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1352493805] [2021-05-21 20:00:54,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:00:54,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:00:54,761 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:00:54,761 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:00:54,761 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1352493805] [2021-05-21 20:00:54,761 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1352493805] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:00:54,761 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:00:54,761 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-21 20:00:54,761 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [562221131] [2021-05-21 20:00:54,762 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:00:54,762 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:00:54,762 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:00:54,762 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:00:54,762 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) [2021-05-21 20:00:54,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:00:54,928 INFO L93 Difference]: Finished difference Result 988 states and 2567 transitions. [2021-05-21 20:00:54,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:00:54,929 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 [2021-05-21 20:00:54,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:00:54,930 INFO L225 Difference]: With dead ends: 988 [2021-05-21 20:00:54,930 INFO L226 Difference]: Without dead ends: 883 [2021-05-21 20:00:54,930 INFO L777 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 [2021-05-21 20:00:54,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 883 states. [2021-05-21 20:00:54,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 883 to 852. [2021-05-21 20:00:54,937 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) [2021-05-21 20:00:54,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 852 states to 852 states and 2215 transitions. [2021-05-21 20:00:54,938 INFO L78 Accepts]: Start accepts. Automaton has 852 states and 2215 transitions. Word has length 26 [2021-05-21 20:00:54,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:00:54,938 INFO L482 AbstractCegarLoop]: Abstraction has 852 states and 2215 transitions. [2021-05-21 20:00:54,938 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:00:54,938 INFO L276 IsEmpty]: Start isEmpty. Operand 852 states and 2215 transitions. [2021-05-21 20:00:54,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 20:00:54,939 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:00:54,939 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:00:54,939 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable318 [2021-05-21 20:00:54,939 INFO L430 AbstractCegarLoop]: === Iteration 320 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 20:00:54,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:00:54,939 INFO L82 PathProgramCache]: Analyzing trace with hash -257777186, now seen corresponding path program 318 times [2021-05-21 20:00:54,939 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:00:54,939 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [856896751] [2021-05-21 20:00:54,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:00:54,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:00:55,000 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:00:55,000 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:00:55,001 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [856896751] [2021-05-21 20:00:55,001 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [856896751] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:00:55,001 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:00:55,001 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-21 20:00:55,001 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [311640632] [2021-05-21 20:00:55,001 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:00:55,001 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:00:55,001 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:00:55,001 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:00:55,001 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) [2021-05-21 20:00:55,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:00:55,159 INFO L93 Difference]: Finished difference Result 953 states and 2465 transitions. [2021-05-21 20:00:55,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:00:55,160 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-05-21 20:00:55,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:00:55,160 INFO L225 Difference]: With dead ends: 953 [2021-05-21 20:00:55,161 INFO L226 Difference]: Without dead ends: 872 [2021-05-21 20:00:55,161 INFO L777 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 [2021-05-21 20:00:55,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 872 states. [2021-05-21 20:00:55,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 872 to 856. [2021-05-21 20:00:55,167 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) [2021-05-21 20:00:55,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 856 states to 856 states and 2224 transitions. [2021-05-21 20:00:55,168 INFO L78 Accepts]: Start accepts. Automaton has 856 states and 2224 transitions. Word has length 26 [2021-05-21 20:00:55,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:00:55,168 INFO L482 AbstractCegarLoop]: Abstraction has 856 states and 2224 transitions. [2021-05-21 20:00:55,169 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) [2021-05-21 20:00:55,169 INFO L276 IsEmpty]: Start isEmpty. Operand 856 states and 2224 transitions. [2021-05-21 20:00:55,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 20:00:55,169 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:00:55,169 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:00:55,169 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable319 [2021-05-21 20:00:55,169 INFO L430 AbstractCegarLoop]: === Iteration 321 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 20:00:55,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:00:55,170 INFO L82 PathProgramCache]: Analyzing trace with hash 1862160506, now seen corresponding path program 319 times [2021-05-21 20:00:55,170 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:00:55,170 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1886935789] [2021-05-21 20:00:55,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:00:55,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:00:55,224 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:00:55,225 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:00:55,225 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1886935789] [2021-05-21 20:00:55,225 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1886935789] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:00:55,225 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:00:55,225 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-21 20:00:55,225 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1249989151] [2021-05-21 20:00:55,225 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:00:55,225 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:00:55,225 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:00:55,225 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:00:55,225 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) [2021-05-21 20:00:55,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:00:55,380 INFO L93 Difference]: Finished difference Result 967 states and 2502 transitions. [2021-05-21 20:00:55,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:00:55,380 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-05-21 20:00:55,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:00:55,381 INFO L225 Difference]: With dead ends: 967 [2021-05-21 20:00:55,381 INFO L226 Difference]: Without dead ends: 864 [2021-05-21 20:00:55,381 INFO L777 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 [2021-05-21 20:00:55,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 864 states. [2021-05-21 20:00:55,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 864 to 853. [2021-05-21 20:00:55,388 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) [2021-05-21 20:00:55,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 853 states to 853 states and 2218 transitions. [2021-05-21 20:00:55,389 INFO L78 Accepts]: Start accepts. Automaton has 853 states and 2218 transitions. Word has length 26 [2021-05-21 20:00:55,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:00:55,389 INFO L482 AbstractCegarLoop]: Abstraction has 853 states and 2218 transitions. [2021-05-21 20:00:55,389 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:00:55,389 INFO L276 IsEmpty]: Start isEmpty. Operand 853 states and 2218 transitions. [2021-05-21 20:00:55,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 20:00:55,390 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:00:55,390 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:00:55,390 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable320 [2021-05-21 20:00:55,390 INFO L430 AbstractCegarLoop]: === Iteration 322 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 20:00:55,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:00:55,390 INFO L82 PathProgramCache]: Analyzing trace with hash -1927946174, now seen corresponding path program 320 times [2021-05-21 20:00:55,390 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:00:55,390 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [49190691] [2021-05-21 20:00:55,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:00:55,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:00:55,451 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:00:55,451 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:00:55,451 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [49190691] [2021-05-21 20:00:55,451 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [49190691] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:00:55,451 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:00:55,451 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-21 20:00:55,451 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1663568453] [2021-05-21 20:00:55,451 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:00:55,451 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:00:55,452 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:00:55,452 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:00:55,452 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) [2021-05-21 20:00:55,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:00:55,606 INFO L93 Difference]: Finished difference Result 988 states and 2530 transitions. [2021-05-21 20:00:55,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:00:55,607 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-05-21 20:00:55,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:00:55,608 INFO L225 Difference]: With dead ends: 988 [2021-05-21 20:00:55,608 INFO L226 Difference]: Without dead ends: 905 [2021-05-21 20:00:55,608 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 54.1ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:00:55,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 905 states. [2021-05-21 20:00:55,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 905 to 849. [2021-05-21 20:00:55,615 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) [2021-05-21 20:00:55,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 849 states to 849 states and 2206 transitions. [2021-05-21 20:00:55,616 INFO L78 Accepts]: Start accepts. Automaton has 849 states and 2206 transitions. Word has length 26 [2021-05-21 20:00:55,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:00:55,616 INFO L482 AbstractCegarLoop]: Abstraction has 849 states and 2206 transitions. [2021-05-21 20:00:55,616 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:00:55,616 INFO L276 IsEmpty]: Start isEmpty. Operand 849 states and 2206 transitions. [2021-05-21 20:00:55,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 20:00:55,617 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:00:55,617 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:00:55,617 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable321 [2021-05-21 20:00:55,617 INFO L430 AbstractCegarLoop]: === Iteration 323 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 20:00:55,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:00:55,617 INFO L82 PathProgramCache]: Analyzing trace with hash 974876576, now seen corresponding path program 321 times [2021-05-21 20:00:55,617 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:00:55,617 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [787816159] [2021-05-21 20:00:55,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:00:55,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:00:55,671 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:00:55,671 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:00:55,671 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [787816159] [2021-05-21 20:00:55,671 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [787816159] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:00:55,672 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:00:55,672 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-21 20:00:55,672 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1805614805] [2021-05-21 20:00:55,672 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:00:55,672 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:00:55,672 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:00:55,672 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:00:55,672 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) [2021-05-21 20:00:55,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:00:55,824 INFO L93 Difference]: Finished difference Result 951 states and 2457 transitions. [2021-05-21 20:00:55,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:00:55,825 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-05-21 20:00:55,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:00:55,825 INFO L225 Difference]: With dead ends: 951 [2021-05-21 20:00:55,826 INFO L226 Difference]: Without dead ends: 868 [2021-05-21 20:00:55,826 INFO L777 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 [2021-05-21 20:00:55,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 868 states. [2021-05-21 20:00:55,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 868 to 848. [2021-05-21 20:00:55,832 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) [2021-05-21 20:00:55,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 848 states to 848 states and 2201 transitions. [2021-05-21 20:00:55,833 INFO L78 Accepts]: Start accepts. Automaton has 848 states and 2201 transitions. Word has length 26 [2021-05-21 20:00:55,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:00:55,834 INFO L482 AbstractCegarLoop]: Abstraction has 848 states and 2201 transitions. [2021-05-21 20:00:55,834 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:00:55,834 INFO L276 IsEmpty]: Start isEmpty. Operand 848 states and 2201 transitions. [2021-05-21 20:00:55,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 20:00:55,834 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:00:55,834 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:00:55,834 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable322 [2021-05-21 20:00:55,835 INFO L430 AbstractCegarLoop]: === Iteration 324 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 20:00:55,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:00:55,835 INFO L82 PathProgramCache]: Analyzing trace with hash -1587711036, now seen corresponding path program 322 times [2021-05-21 20:00:55,835 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:00:55,835 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1405326214] [2021-05-21 20:00:55,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:00:55,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:00:55,893 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:00:55,893 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:00:55,893 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1405326214] [2021-05-21 20:00:55,893 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1405326214] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:00:55,893 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:00:55,893 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-21 20:00:55,893 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [333161511] [2021-05-21 20:00:55,893 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:00:55,893 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:00:55,893 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:00:55,893 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:00:55,893 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) [2021-05-21 20:00:56,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:00:56,061 INFO L93 Difference]: Finished difference Result 963 states and 2484 transitions. [2021-05-21 20:00:56,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:00:56,062 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-05-21 20:00:56,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:00:56,062 INFO L225 Difference]: With dead ends: 963 [2021-05-21 20:00:56,062 INFO L226 Difference]: Without dead ends: 853 [2021-05-21 20:00:56,063 INFO L777 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 [2021-05-21 20:00:56,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 853 states. [2021-05-21 20:00:56,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 853 to 831. [2021-05-21 20:00:56,069 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) [2021-05-21 20:00:56,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 831 states to 831 states and 2161 transitions. [2021-05-21 20:00:56,070 INFO L78 Accepts]: Start accepts. Automaton has 831 states and 2161 transitions. Word has length 26 [2021-05-21 20:00:56,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:00:56,070 INFO L482 AbstractCegarLoop]: Abstraction has 831 states and 2161 transitions. [2021-05-21 20:00:56,070 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:00:56,070 INFO L276 IsEmpty]: Start isEmpty. Operand 831 states and 2161 transitions. [2021-05-21 20:00:56,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 20:00:56,071 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:00:56,071 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:00:56,071 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable323 [2021-05-21 20:00:56,071 INFO L430 AbstractCegarLoop]: === Iteration 325 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 20:00:56,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:00:56,071 INFO L82 PathProgramCache]: Analyzing trace with hash -1318555276, now seen corresponding path program 323 times [2021-05-21 20:00:56,071 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:00:56,072 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2069343318] [2021-05-21 20:00:56,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:00:56,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:00:56,126 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:00:56,126 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:00:56,126 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2069343318] [2021-05-21 20:00:56,127 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2069343318] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:00:56,127 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:00:56,127 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-21 20:00:56,127 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1339684849] [2021-05-21 20:00:56,127 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:00:56,127 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:00:56,127 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:00:56,127 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:00:56,127 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) [2021-05-21 20:00:56,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:00:56,281 INFO L93 Difference]: Finished difference Result 964 states and 2472 transitions. [2021-05-21 20:00:56,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:00:56,282 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-05-21 20:00:56,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:00:56,283 INFO L225 Difference]: With dead ends: 964 [2021-05-21 20:00:56,283 INFO L226 Difference]: Without dead ends: 883 [2021-05-21 20:00:56,283 INFO L777 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 [2021-05-21 20:00:56,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 883 states. [2021-05-21 20:00:56,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 883 to 827. [2021-05-21 20:00:56,290 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) [2021-05-21 20:00:56,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 827 states to 827 states and 2152 transitions. [2021-05-21 20:00:56,291 INFO L78 Accepts]: Start accepts. Automaton has 827 states and 2152 transitions. Word has length 26 [2021-05-21 20:00:56,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:00:56,291 INFO L482 AbstractCegarLoop]: Abstraction has 827 states and 2152 transitions. [2021-05-21 20:00:56,291 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:00:56,291 INFO L276 IsEmpty]: Start isEmpty. Operand 827 states and 2152 transitions. [2021-05-21 20:00:56,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 20:00:56,292 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:00:56,292 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:00:56,292 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable324 [2021-05-21 20:00:56,292 INFO L430 AbstractCegarLoop]: === Iteration 326 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 20:00:56,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:00:56,292 INFO L82 PathProgramCache]: Analyzing trace with hash 801382416, now seen corresponding path program 324 times [2021-05-21 20:00:56,292 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:00:56,292 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [775607651] [2021-05-21 20:00:56,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:00:56,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:00:56,346 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:00:56,346 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:00:56,346 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [775607651] [2021-05-21 20:00:56,346 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [775607651] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:00:56,347 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:00:56,347 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-21 20:00:56,347 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [515351860] [2021-05-21 20:00:56,347 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:00:56,347 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:00:56,347 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:00:56,347 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:00:56,347 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) [2021-05-21 20:00:56,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:00:56,497 INFO L93 Difference]: Finished difference Result 932 states and 2411 transitions. [2021-05-21 20:00:56,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:00:56,498 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-05-21 20:00:56,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:00:56,498 INFO L225 Difference]: With dead ends: 932 [2021-05-21 20:00:56,499 INFO L226 Difference]: Without dead ends: 823 [2021-05-21 20:00:56,499 INFO L777 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 [2021-05-21 20:00:56,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 823 states. [2021-05-21 20:00:56,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 823 to 803. [2021-05-21 20:00:56,505 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) [2021-05-21 20:00:56,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 803 states to 803 states and 2097 transitions. [2021-05-21 20:00:56,506 INFO L78 Accepts]: Start accepts. Automaton has 803 states and 2097 transitions. Word has length 26 [2021-05-21 20:00:56,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:00:56,506 INFO L482 AbstractCegarLoop]: Abstraction has 803 states and 2097 transitions. [2021-05-21 20:00:56,506 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) [2021-05-21 20:00:56,506 INFO L276 IsEmpty]: Start isEmpty. Operand 803 states and 2097 transitions. [2021-05-21 20:00:56,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 20:00:56,507 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:00:56,507 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:00:56,507 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable325 [2021-05-21 20:00:56,507 INFO L430 AbstractCegarLoop]: === Iteration 327 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 20:00:56,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:00:56,508 INFO L82 PathProgramCache]: Analyzing trace with hash -934523986, now seen corresponding path program 325 times [2021-05-21 20:00:56,508 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:00:56,508 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [606927391] [2021-05-21 20:00:56,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:00:56,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:00:56,571 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:00:56,571 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:00:56,571 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [606927391] [2021-05-21 20:00:56,571 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [606927391] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:00:56,571 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:00:56,571 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-21 20:00:56,571 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [15811706] [2021-05-21 20:00:56,572 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:00:56,572 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:00:56,572 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:00:56,572 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:00:56,572 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) [2021-05-21 20:00:56,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:00:56,720 INFO L93 Difference]: Finished difference Result 925 states and 2372 transitions. [2021-05-21 20:00:56,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:00:56,720 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-05-21 20:00:56,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:00:56,721 INFO L225 Difference]: With dead ends: 925 [2021-05-21 20:00:56,721 INFO L226 Difference]: Without dead ends: 828 [2021-05-21 20:00:56,721 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 56.1ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:00:56,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 828 states. [2021-05-21 20:00:56,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 828 to 788. [2021-05-21 20:00:56,727 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) [2021-05-21 20:00:56,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 788 states to 788 states and 2053 transitions. [2021-05-21 20:00:56,728 INFO L78 Accepts]: Start accepts. Automaton has 788 states and 2053 transitions. Word has length 26 [2021-05-21 20:00:56,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:00:56,728 INFO L482 AbstractCegarLoop]: Abstraction has 788 states and 2053 transitions. [2021-05-21 20:00:56,728 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:00:56,729 INFO L276 IsEmpty]: Start isEmpty. Operand 788 states and 2053 transitions. [2021-05-21 20:00:56,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 20:00:56,729 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:00:56,729 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:00:56,729 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable326 [2021-05-21 20:00:56,729 INFO L430 AbstractCegarLoop]: === Iteration 328 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 20:00:56,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:00:56,730 INFO L82 PathProgramCache]: Analyzing trace with hash -625259506, now seen corresponding path program 326 times [2021-05-21 20:00:56,730 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:00:56,730 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1797128248] [2021-05-21 20:00:56,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:00:56,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:00:56,775 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:00:56,775 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:00:56,775 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1797128248] [2021-05-21 20:00:56,775 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1797128248] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:00:56,775 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:00:56,776 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:00:56,776 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1536485286] [2021-05-21 20:00:56,776 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-21 20:00:56,776 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:00:56,776 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-21 20:00:56,776 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-05-21 20:00:56,776 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) [2021-05-21 20:00:56,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:00:56,894 INFO L93 Difference]: Finished difference Result 919 states and 2353 transitions. [2021-05-21 20:00:56,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-21 20:00:56,895 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 [2021-05-21 20:00:56,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:00:56,895 INFO L225 Difference]: With dead ends: 919 [2021-05-21 20:00:56,895 INFO L226 Difference]: Without dead ends: 826 [2021-05-21 20:00:56,896 INFO L777 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 [2021-05-21 20:00:56,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 826 states. [2021-05-21 20:00:56,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 826 to 788. [2021-05-21 20:00:56,902 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) [2021-05-21 20:00:56,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 788 states to 788 states and 2049 transitions. [2021-05-21 20:00:56,903 INFO L78 Accepts]: Start accepts. Automaton has 788 states and 2049 transitions. Word has length 26 [2021-05-21 20:00:56,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:00:56,903 INFO L482 AbstractCegarLoop]: Abstraction has 788 states and 2049 transitions. [2021-05-21 20:00:56,903 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) [2021-05-21 20:00:56,903 INFO L276 IsEmpty]: Start isEmpty. Operand 788 states and 2049 transitions. [2021-05-21 20:00:56,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 20:00:56,904 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:00:56,904 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:00:56,904 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable327 [2021-05-21 20:00:56,904 INFO L430 AbstractCegarLoop]: === Iteration 329 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 20:00:56,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:00:56,904 INFO L82 PathProgramCache]: Analyzing trace with hash 244185102, now seen corresponding path program 327 times [2021-05-21 20:00:56,904 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:00:56,905 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [49237147] [2021-05-21 20:00:56,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:00:56,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:00:56,962 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:00:56,962 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:00:56,963 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [49237147] [2021-05-21 20:00:56,963 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [49237147] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:00:56,963 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:00:56,963 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-21 20:00:56,963 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1593930585] [2021-05-21 20:00:56,963 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:00:56,963 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:00:56,963 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:00:56,963 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:00:56,963 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) [2021-05-21 20:00:57,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:00:57,110 INFO L93 Difference]: Finished difference Result 935 states and 2392 transitions. [2021-05-21 20:00:57,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:00:57,110 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-05-21 20:00:57,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:00:57,111 INFO L225 Difference]: With dead ends: 935 [2021-05-21 20:00:57,111 INFO L226 Difference]: Without dead ends: 666 [2021-05-21 20:00:57,111 INFO L777 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 [2021-05-21 20:00:57,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 666 states. [2021-05-21 20:00:57,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 666 to 594. [2021-05-21 20:00:57,116 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) [2021-05-21 20:00:57,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 594 states to 594 states and 1515 transitions. [2021-05-21 20:00:57,117 INFO L78 Accepts]: Start accepts. Automaton has 594 states and 1515 transitions. Word has length 26 [2021-05-21 20:00:57,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:00:57,117 INFO L482 AbstractCegarLoop]: Abstraction has 594 states and 1515 transitions. [2021-05-21 20:00:57,117 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:00:57,117 INFO L276 IsEmpty]: Start isEmpty. Operand 594 states and 1515 transitions. [2021-05-21 20:00:57,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 20:00:57,117 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:00:57,117 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:00:57,117 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable328 [2021-05-21 20:00:57,118 INFO L430 AbstractCegarLoop]: === Iteration 330 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 20:00:57,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:00:57,118 INFO L82 PathProgramCache]: Analyzing trace with hash 256125006, now seen corresponding path program 328 times [2021-05-21 20:00:57,118 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:00:57,118 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1704552125] [2021-05-21 20:00:57,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:00:57,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:00:57,171 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:00:57,171 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:00:57,171 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1704552125] [2021-05-21 20:00:57,171 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1704552125] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:00:57,171 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:00:57,172 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-21 20:00:57,172 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1885866932] [2021-05-21 20:00:57,172 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:00:57,172 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:00:57,172 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:00:57,172 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:00:57,172 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) [2021-05-21 20:00:57,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:00:57,338 INFO L93 Difference]: Finished difference Result 734 states and 1848 transitions. [2021-05-21 20:00:57,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:00:57,338 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 [2021-05-21 20:00:57,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:00:57,339 INFO L225 Difference]: With dead ends: 734 [2021-05-21 20:00:57,339 INFO L226 Difference]: Without dead ends: 633 [2021-05-21 20:00:57,339 INFO L777 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 [2021-05-21 20:00:57,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 633 states. [2021-05-21 20:00:57,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 633 to 570. [2021-05-21 20:00:57,344 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) [2021-05-21 20:00:57,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 570 states to 570 states and 1457 transitions. [2021-05-21 20:00:57,344 INFO L78 Accepts]: Start accepts. Automaton has 570 states and 1457 transitions. Word has length 26 [2021-05-21 20:00:57,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:00:57,344 INFO L482 AbstractCegarLoop]: Abstraction has 570 states and 1457 transitions. [2021-05-21 20:00:57,344 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:00:57,344 INFO L276 IsEmpty]: Start isEmpty. Operand 570 states and 1457 transitions. [2021-05-21 20:00:57,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 20:00:57,345 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:00:57,345 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:00:57,345 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable329 [2021-05-21 20:00:57,345 INFO L430 AbstractCegarLoop]: === Iteration 331 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 20:00:57,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:00:57,345 INFO L82 PathProgramCache]: Analyzing trace with hash 1125569614, now seen corresponding path program 329 times [2021-05-21 20:00:57,345 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:00:57,345 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1946797189] [2021-05-21 20:00:57,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:00:57,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:00:57,406 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:00:57,406 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:00:57,406 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1946797189] [2021-05-21 20:00:57,406 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1946797189] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:00:57,406 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:00:57,406 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-21 20:00:57,406 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1959227689] [2021-05-21 20:00:57,406 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:00:57,407 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:00:57,407 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:00:57,407 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:00:57,407 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) [2021-05-21 20:00:57,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:00:57,575 INFO L93 Difference]: Finished difference Result 694 states and 1767 transitions. [2021-05-21 20:00:57,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:00:57,576 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-05-21 20:00:57,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:00:57,576 INFO L225 Difference]: With dead ends: 694 [2021-05-21 20:00:57,576 INFO L226 Difference]: Without dead ends: 603 [2021-05-21 20:00:57,576 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 53.1ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:00:57,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 603 states. [2021-05-21 20:00:57,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 603 to 587. [2021-05-21 20:00:57,581 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) [2021-05-21 20:00:57,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 587 states to 587 states and 1499 transitions. [2021-05-21 20:00:57,582 INFO L78 Accepts]: Start accepts. Automaton has 587 states and 1499 transitions. Word has length 26 [2021-05-21 20:00:57,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:00:57,582 INFO L482 AbstractCegarLoop]: Abstraction has 587 states and 1499 transitions. [2021-05-21 20:00:57,582 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) [2021-05-21 20:00:57,582 INFO L276 IsEmpty]: Start isEmpty. Operand 587 states and 1499 transitions. [2021-05-21 20:00:57,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 20:00:57,582 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:00:57,582 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:00:57,583 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable330 [2021-05-21 20:00:57,583 INFO L430 AbstractCegarLoop]: === Iteration 332 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 20:00:57,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:00:57,583 INFO L82 PathProgramCache]: Analyzing trace with hash 1937772202, now seen corresponding path program 330 times [2021-05-21 20:00:57,583 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:00:57,583 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [944421659] [2021-05-21 20:00:57,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:00:57,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:00:57,637 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:00:57,637 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:00:57,637 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [944421659] [2021-05-21 20:00:57,637 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [944421659] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:00:57,638 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:00:57,638 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-21 20:00:57,638 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1774572873] [2021-05-21 20:00:57,638 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:00:57,638 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:00:57,638 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:00:57,638 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:00:57,638 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) [2021-05-21 20:00:57,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:00:57,798 INFO L93 Difference]: Finished difference Result 696 states and 1770 transitions. [2021-05-21 20:00:57,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:00:57,798 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-05-21 20:00:57,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:00:57,799 INFO L225 Difference]: With dead ends: 696 [2021-05-21 20:00:57,799 INFO L226 Difference]: Without dead ends: 600 [2021-05-21 20:00:57,799 INFO L777 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 [2021-05-21 20:00:57,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 600 states. [2021-05-21 20:00:57,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 600 to 582. [2021-05-21 20:00:57,804 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) [2021-05-21 20:00:57,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 582 states to 582 states and 1485 transitions. [2021-05-21 20:00:57,804 INFO L78 Accepts]: Start accepts. Automaton has 582 states and 1485 transitions. Word has length 26 [2021-05-21 20:00:57,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:00:57,804 INFO L482 AbstractCegarLoop]: Abstraction has 582 states and 1485 transitions. [2021-05-21 20:00:57,805 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) [2021-05-21 20:00:57,805 INFO L276 IsEmpty]: Start isEmpty. Operand 582 states and 1485 transitions. [2021-05-21 20:00:57,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 20:00:57,805 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:00:57,805 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:00:57,805 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable331 [2021-05-21 20:00:57,805 INFO L430 AbstractCegarLoop]: === Iteration 333 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 20:00:57,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:00:57,805 INFO L82 PathProgramCache]: Analyzing trace with hash 908358482, now seen corresponding path program 331 times [2021-05-21 20:00:57,805 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:00:57,806 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [483556097] [2021-05-21 20:00:57,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:00:57,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:00:57,858 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:00:57,858 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:00:57,858 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [483556097] [2021-05-21 20:00:57,858 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [483556097] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:00:57,858 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:00:57,858 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-21 20:00:57,858 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1472191291] [2021-05-21 20:00:57,858 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:00:57,858 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:00:57,859 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:00:57,859 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:00:57,859 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) [2021-05-21 20:00:58,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:00:58,006 INFO L93 Difference]: Finished difference Result 709 states and 1796 transitions. [2021-05-21 20:00:58,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:00:58,007 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 [2021-05-21 20:00:58,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:00:58,007 INFO L225 Difference]: With dead ends: 709 [2021-05-21 20:00:58,007 INFO L226 Difference]: Without dead ends: 586 [2021-05-21 20:00:58,007 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 45.9ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:00:58,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 586 states. [2021-05-21 20:00:58,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 586 to 570. [2021-05-21 20:00:58,012 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) [2021-05-21 20:00:58,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 570 states to 570 states and 1454 transitions. [2021-05-21 20:00:58,013 INFO L78 Accepts]: Start accepts. Automaton has 570 states and 1454 transitions. Word has length 26 [2021-05-21 20:00:58,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:00:58,013 INFO L482 AbstractCegarLoop]: Abstraction has 570 states and 1454 transitions. [2021-05-21 20:00:58,013 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:00:58,013 INFO L276 IsEmpty]: Start isEmpty. Operand 570 states and 1454 transitions. [2021-05-21 20:00:58,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 20:00:58,013 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:00:58,013 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:00:58,013 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable332 [2021-05-21 20:00:58,014 INFO L430 AbstractCegarLoop]: === Iteration 334 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 20:00:58,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:00:58,014 INFO L82 PathProgramCache]: Analyzing trace with hash 48042988, now seen corresponding path program 332 times [2021-05-21 20:00:58,014 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:00:58,014 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1410635230] [2021-05-21 20:00:58,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:00:58,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:00:58,071 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:00:58,071 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:00:58,071 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1410635230] [2021-05-21 20:00:58,071 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1410635230] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:00:58,071 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:00:58,071 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-21 20:00:58,071 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [195226131] [2021-05-21 20:00:58,071 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:00:58,071 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:00:58,071 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:00:58,071 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:00:58,072 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) [2021-05-21 20:00:58,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:00:58,227 INFO L93 Difference]: Finished difference Result 694 states and 1757 transitions. [2021-05-21 20:00:58,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:00:58,227 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-05-21 20:00:58,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:00:58,228 INFO L225 Difference]: With dead ends: 694 [2021-05-21 20:00:58,228 INFO L226 Difference]: Without dead ends: 613 [2021-05-21 20:00:58,228 INFO L777 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 [2021-05-21 20:00:58,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 613 states. [2021-05-21 20:00:58,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 613 to 569. [2021-05-21 20:00:58,233 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) [2021-05-21 20:00:58,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 569 states to 569 states and 1452 transitions. [2021-05-21 20:00:58,234 INFO L78 Accepts]: Start accepts. Automaton has 569 states and 1452 transitions. Word has length 26 [2021-05-21 20:00:58,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:00:58,234 INFO L482 AbstractCegarLoop]: Abstraction has 569 states and 1452 transitions. [2021-05-21 20:00:58,234 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:00:58,234 INFO L276 IsEmpty]: Start isEmpty. Operand 569 states and 1452 transitions. [2021-05-21 20:00:58,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 20:00:58,234 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:00:58,234 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:00:58,235 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable333 [2021-05-21 20:00:58,235 INFO L430 AbstractCegarLoop]: === Iteration 335 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 20:00:58,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:00:58,235 INFO L82 PathProgramCache]: Analyzing trace with hash 917487596, now seen corresponding path program 333 times [2021-05-21 20:00:58,235 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:00:58,235 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [648278947] [2021-05-21 20:00:58,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:00:58,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:00:58,288 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:00:58,288 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:00:58,288 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [648278947] [2021-05-21 20:00:58,288 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [648278947] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:00:58,288 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:00:58,288 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-21 20:00:58,288 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [305949316] [2021-05-21 20:00:58,288 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:00:58,288 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:00:58,289 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:00:58,289 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:00:58,289 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) [2021-05-21 20:00:58,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:00:58,454 INFO L93 Difference]: Finished difference Result 696 states and 1757 transitions. [2021-05-21 20:00:58,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:00:58,455 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 [2021-05-21 20:00:58,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:00:58,455 INFO L225 Difference]: With dead ends: 696 [2021-05-21 20:00:58,455 INFO L226 Difference]: Without dead ends: 605 [2021-05-21 20:00:58,455 INFO L777 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 [2021-05-21 20:00:58,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 605 states. [2021-05-21 20:00:58,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 605 to 576. [2021-05-21 20:00:58,460 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) [2021-05-21 20:00:58,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 576 states to 576 states and 1469 transitions. [2021-05-21 20:00:58,461 INFO L78 Accepts]: Start accepts. Automaton has 576 states and 1469 transitions. Word has length 26 [2021-05-21 20:00:58,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:00:58,461 INFO L482 AbstractCegarLoop]: Abstraction has 576 states and 1469 transitions. [2021-05-21 20:00:58,461 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) [2021-05-21 20:00:58,461 INFO L276 IsEmpty]: Start isEmpty. Operand 576 states and 1469 transitions. [2021-05-21 20:00:58,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 20:00:58,461 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:00:58,462 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:00:58,462 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable334 [2021-05-21 20:00:58,462 INFO L430 AbstractCegarLoop]: === Iteration 336 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 20:00:58,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:00:58,462 INFO L82 PathProgramCache]: Analyzing trace with hash -538070062, now seen corresponding path program 334 times [2021-05-21 20:00:58,462 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:00:58,462 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1102271306] [2021-05-21 20:00:58,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:00:58,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:00:58,524 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:00:58,524 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:00:58,524 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1102271306] [2021-05-21 20:00:58,524 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1102271306] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:00:58,524 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:00:58,524 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-21 20:00:58,524 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1430657117] [2021-05-21 20:00:58,524 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:00:58,524 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:00:58,525 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:00:58,525 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:00:58,525 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) [2021-05-21 20:00:58,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:00:58,706 INFO L93 Difference]: Finished difference Result 692 states and 1748 transitions. [2021-05-21 20:00:58,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:00:58,706 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 [2021-05-21 20:00:58,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:00:58,707 INFO L225 Difference]: With dead ends: 692 [2021-05-21 20:00:58,707 INFO L226 Difference]: Without dead ends: 599 [2021-05-21 20:00:58,707 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 53.5ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:00:58,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 599 states. [2021-05-21 20:00:58,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 599 to 572. [2021-05-21 20:00:58,712 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) [2021-05-21 20:00:58,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 572 states to 572 states and 1459 transitions. [2021-05-21 20:00:58,712 INFO L78 Accepts]: Start accepts. Automaton has 572 states and 1459 transitions. Word has length 26 [2021-05-21 20:00:58,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:00:58,713 INFO L482 AbstractCegarLoop]: Abstraction has 572 states and 1459 transitions. [2021-05-21 20:00:58,713 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:00:58,713 INFO L276 IsEmpty]: Start isEmpty. Operand 572 states and 1459 transitions. [2021-05-21 20:00:58,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 20:00:58,713 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:00:58,713 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:00:58,713 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable335 [2021-05-21 20:00:58,713 INFO L430 AbstractCegarLoop]: === Iteration 337 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 20:00:58,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:00:58,714 INFO L82 PathProgramCache]: Analyzing trace with hash -158764978, now seen corresponding path program 335 times [2021-05-21 20:00:58,714 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:00:58,714 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1874043338] [2021-05-21 20:00:58,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:00:58,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:00:58,768 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:00:58,769 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:00:58,769 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1874043338] [2021-05-21 20:00:58,769 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1874043338] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:00:58,769 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:00:58,769 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-21 20:00:58,769 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1702737836] [2021-05-21 20:00:58,769 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:00:58,769 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:00:58,769 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:00:58,769 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:00:58,769 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) [2021-05-21 20:00:58,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:00:58,929 INFO L93 Difference]: Finished difference Result 712 states and 1795 transitions. [2021-05-21 20:00:58,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:00:58,929 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 [2021-05-21 20:00:58,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:00:58,930 INFO L225 Difference]: With dead ends: 712 [2021-05-21 20:00:58,930 INFO L226 Difference]: Without dead ends: 631 [2021-05-21 20:00:58,930 INFO L777 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 [2021-05-21 20:00:58,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 631 states. [2021-05-21 20:00:58,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 631 to 574. [2021-05-21 20:00:58,935 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) [2021-05-21 20:00:58,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 574 states to 574 states and 1469 transitions. [2021-05-21 20:00:58,935 INFO L78 Accepts]: Start accepts. Automaton has 574 states and 1469 transitions. Word has length 26 [2021-05-21 20:00:58,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:00:58,936 INFO L482 AbstractCegarLoop]: Abstraction has 574 states and 1469 transitions. [2021-05-21 20:00:58,936 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) [2021-05-21 20:00:58,936 INFO L276 IsEmpty]: Start isEmpty. Operand 574 states and 1469 transitions. [2021-05-21 20:00:58,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 20:00:58,936 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:00:58,936 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:00:58,936 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable336 [2021-05-21 20:00:58,936 INFO L430 AbstractCegarLoop]: === Iteration 338 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 20:00:58,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:00:58,936 INFO L82 PathProgramCache]: Analyzing trace with hash 710679630, now seen corresponding path program 336 times [2021-05-21 20:00:58,937 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:00:58,937 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [459535080] [2021-05-21 20:00:58,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:00:58,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:00:58,991 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:00:58,991 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:00:58,991 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [459535080] [2021-05-21 20:00:58,991 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [459535080] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:00:58,991 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:00:58,991 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-21 20:00:58,991 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [298789529] [2021-05-21 20:00:58,991 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:00:58,991 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:00:58,992 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:00:58,992 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:00:58,992 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) [2021-05-21 20:00:59,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:00:59,155 INFO L93 Difference]: Finished difference Result 690 states and 1756 transitions. [2021-05-21 20:00:59,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:00:59,156 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 [2021-05-21 20:00:59,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:00:59,156 INFO L225 Difference]: With dead ends: 690 [2021-05-21 20:00:59,156 INFO L226 Difference]: Without dead ends: 599 [2021-05-21 20:00:59,156 INFO L777 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 [2021-05-21 20:00:59,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 599 states. [2021-05-21 20:00:59,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 599 to 577. [2021-05-21 20:00:59,161 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) [2021-05-21 20:00:59,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 577 states to 577 states and 1475 transitions. [2021-05-21 20:00:59,162 INFO L78 Accepts]: Start accepts. Automaton has 577 states and 1475 transitions. Word has length 26 [2021-05-21 20:00:59,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:00:59,162 INFO L482 AbstractCegarLoop]: Abstraction has 577 states and 1475 transitions. [2021-05-21 20:00:59,162 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) [2021-05-21 20:00:59,162 INFO L276 IsEmpty]: Start isEmpty. Operand 577 states and 1475 transitions. [2021-05-21 20:00:59,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 20:00:59,163 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:00:59,163 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:00:59,163 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable337 [2021-05-21 20:00:59,163 INFO L430 AbstractCegarLoop]: === Iteration 339 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 20:00:59,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:00:59,163 INFO L82 PathProgramCache]: Analyzing trace with hash -1663603796, now seen corresponding path program 337 times [2021-05-21 20:00:59,163 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:00:59,163 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2005132325] [2021-05-21 20:00:59,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:00:59,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:00:59,220 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:00:59,220 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:00:59,220 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2005132325] [2021-05-21 20:00:59,220 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2005132325] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:00:59,220 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:00:59,220 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-21 20:00:59,220 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [233213892] [2021-05-21 20:00:59,221 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:00:59,221 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:00:59,221 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:00:59,221 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:00:59,221 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) [2021-05-21 20:00:59,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:00:59,373 INFO L93 Difference]: Finished difference Result 686 states and 1730 transitions. [2021-05-21 20:00:59,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:00:59,374 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-05-21 20:00:59,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:00:59,374 INFO L225 Difference]: With dead ends: 686 [2021-05-21 20:00:59,374 INFO L226 Difference]: Without dead ends: 597 [2021-05-21 20:00:59,374 INFO L777 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 [2021-05-21 20:00:59,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 597 states. [2021-05-21 20:00:59,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 597 to 575. [2021-05-21 20:00:59,379 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) [2021-05-21 20:00:59,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 575 states to 575 states and 1467 transitions. [2021-05-21 20:00:59,380 INFO L78 Accepts]: Start accepts. Automaton has 575 states and 1467 transitions. Word has length 26 [2021-05-21 20:00:59,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:00:59,380 INFO L482 AbstractCegarLoop]: Abstraction has 575 states and 1467 transitions. [2021-05-21 20:00:59,380 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:00:59,380 INFO L276 IsEmpty]: Start isEmpty. Operand 575 states and 1467 transitions. [2021-05-21 20:00:59,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 20:00:59,380 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:00:59,380 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:00:59,381 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable338 [2021-05-21 20:00:59,381 INFO L430 AbstractCegarLoop]: === Iteration 340 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 20:00:59,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:00:59,381 INFO L82 PathProgramCache]: Analyzing trace with hash 456333896, now seen corresponding path program 338 times [2021-05-21 20:00:59,381 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:00:59,381 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2003998510] [2021-05-21 20:00:59,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:00:59,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:00:59,451 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:00:59,451 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:00:59,451 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2003998510] [2021-05-21 20:00:59,451 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2003998510] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:00:59,451 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:00:59,451 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-21 20:00:59,451 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [802273564] [2021-05-21 20:00:59,451 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:00:59,451 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:00:59,451 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:00:59,452 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:00:59,452 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) [2021-05-21 20:00:59,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:00:59,610 INFO L93 Difference]: Finished difference Result 678 states and 1726 transitions. [2021-05-21 20:00:59,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:00:59,611 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-05-21 20:00:59,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:00:59,611 INFO L225 Difference]: With dead ends: 678 [2021-05-21 20:00:59,611 INFO L226 Difference]: Without dead ends: 582 [2021-05-21 20:00:59,612 INFO L777 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 [2021-05-21 20:00:59,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 582 states. [2021-05-21 20:00:59,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 582 to 570. [2021-05-21 20:00:59,616 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) [2021-05-21 20:00:59,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 570 states to 570 states and 1455 transitions. [2021-05-21 20:00:59,617 INFO L78 Accepts]: Start accepts. Automaton has 570 states and 1455 transitions. Word has length 26 [2021-05-21 20:00:59,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:00:59,617 INFO L482 AbstractCegarLoop]: Abstraction has 570 states and 1455 transitions. [2021-05-21 20:00:59,617 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:00:59,617 INFO L276 IsEmpty]: Start isEmpty. Operand 570 states and 1455 transitions. [2021-05-21 20:00:59,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 20:00:59,618 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:00:59,618 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:00:59,618 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable339 [2021-05-21 20:00:59,618 INFO L430 AbstractCegarLoop]: === Iteration 341 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 20:00:59,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:00:59,618 INFO L82 PathProgramCache]: Analyzing trace with hash -1601393100, now seen corresponding path program 339 times [2021-05-21 20:00:59,618 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:00:59,618 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2060095157] [2021-05-21 20:00:59,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:00:59,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:00:59,674 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:00:59,674 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:00:59,674 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2060095157] [2021-05-21 20:00:59,674 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2060095157] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:00:59,674 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:00:59,675 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-21 20:00:59,675 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1163861724] [2021-05-21 20:00:59,675 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:00:59,675 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:00:59,675 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:00:59,675 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:00:59,675 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) [2021-05-21 20:00:59,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:00:59,834 INFO L93 Difference]: Finished difference Result 701 states and 1771 transitions. [2021-05-21 20:00:59,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:00:59,834 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-05-21 20:00:59,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:00:59,835 INFO L225 Difference]: With dead ends: 701 [2021-05-21 20:00:59,835 INFO L226 Difference]: Without dead ends: 610 [2021-05-21 20:00:59,835 INFO L777 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 [2021-05-21 20:00:59,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 610 states. [2021-05-21 20:00:59,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 610 to 585. [2021-05-21 20:00:59,840 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) [2021-05-21 20:00:59,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 585 states to 585 states and 1488 transitions. [2021-05-21 20:00:59,841 INFO L78 Accepts]: Start accepts. Automaton has 585 states and 1488 transitions. Word has length 26 [2021-05-21 20:00:59,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:00:59,841 INFO L482 AbstractCegarLoop]: Abstraction has 585 states and 1488 transitions. [2021-05-21 20:00:59,841 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:00:59,841 INFO L276 IsEmpty]: Start isEmpty. Operand 585 states and 1488 transitions. [2021-05-21 20:00:59,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 20:00:59,841 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:00:59,841 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:00:59,841 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable340 [2021-05-21 20:00:59,841 INFO L430 AbstractCegarLoop]: === Iteration 342 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 20:00:59,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:00:59,842 INFO L82 PathProgramCache]: Analyzing trace with hash 1301429650, now seen corresponding path program 340 times [2021-05-21 20:00:59,842 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:00:59,842 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [880799572] [2021-05-21 20:00:59,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:00:59,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:00:59,894 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:00:59,894 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:00:59,895 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [880799572] [2021-05-21 20:00:59,895 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [880799572] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:00:59,895 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:00:59,895 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-21 20:00:59,895 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582508236] [2021-05-21 20:00:59,895 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:00:59,895 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:00:59,895 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:00:59,895 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:00:59,895 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) [2021-05-21 20:01:00,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:01:00,053 INFO L93 Difference]: Finished difference Result 693 states and 1757 transitions. [2021-05-21 20:01:00,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:01:00,054 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-05-21 20:01:00,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:01:00,054 INFO L225 Difference]: With dead ends: 693 [2021-05-21 20:01:00,054 INFO L226 Difference]: Without dead ends: 596 [2021-05-21 20:01:00,054 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 45.8ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:01:00,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 596 states. [2021-05-21 20:01:00,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 596 to 583. [2021-05-21 20:01:00,059 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) [2021-05-21 20:01:00,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 583 states to 583 states and 1483 transitions. [2021-05-21 20:01:00,060 INFO L78 Accepts]: Start accepts. Automaton has 583 states and 1483 transitions. Word has length 26 [2021-05-21 20:01:00,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:01:00,060 INFO L482 AbstractCegarLoop]: Abstraction has 583 states and 1483 transitions. [2021-05-21 20:01:00,060 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:01:00,060 INFO L276 IsEmpty]: Start isEmpty. Operand 583 states and 1483 transitions. [2021-05-21 20:01:00,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 20:01:00,060 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:01:00,060 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:01:00,060 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable341 [2021-05-21 20:01:00,061 INFO L430 AbstractCegarLoop]: === Iteration 343 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 20:01:00,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:01:00,061 INFO L82 PathProgramCache]: Analyzing trace with hash 392582440, now seen corresponding path program 341 times [2021-05-21 20:01:00,061 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:01:00,061 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [523471867] [2021-05-21 20:01:00,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:01:00,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:01:00,127 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:01:00,127 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:01:00,127 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [523471867] [2021-05-21 20:01:00,127 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [523471867] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:01:00,127 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:01:00,127 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-21 20:01:00,127 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [540775841] [2021-05-21 20:01:00,127 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:01:00,127 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:01:00,127 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:01:00,127 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:01:00,128 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) [2021-05-21 20:01:00,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:01:00,282 INFO L93 Difference]: Finished difference Result 728 states and 1837 transitions. [2021-05-21 20:01:00,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:01:00,282 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-05-21 20:01:00,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:01:00,283 INFO L225 Difference]: With dead ends: 728 [2021-05-21 20:01:00,283 INFO L226 Difference]: Without dead ends: 613 [2021-05-21 20:01:00,283 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 55.6ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:01:00,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 613 states. [2021-05-21 20:01:00,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 613 to 583. [2021-05-21 20:01:00,288 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) [2021-05-21 20:01:00,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 583 states to 583 states and 1475 transitions. [2021-05-21 20:01:00,289 INFO L78 Accepts]: Start accepts. Automaton has 583 states and 1475 transitions. Word has length 26 [2021-05-21 20:01:00,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:01:00,289 INFO L482 AbstractCegarLoop]: Abstraction has 583 states and 1475 transitions. [2021-05-21 20:01:00,289 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) [2021-05-21 20:01:00,289 INFO L276 IsEmpty]: Start isEmpty. Operand 583 states and 1475 transitions. [2021-05-21 20:01:00,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 20:01:00,289 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:01:00,289 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:01:00,289 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable342 [2021-05-21 20:01:00,289 INFO L430 AbstractCegarLoop]: === Iteration 344 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 20:01:00,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:01:00,290 INFO L82 PathProgramCache]: Analyzing trace with hash 1632796106, now seen corresponding path program 342 times [2021-05-21 20:01:00,290 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:01:00,290 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [595426306] [2021-05-21 20:01:00,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:01:00,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:01:00,343 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:01:00,343 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:01:00,343 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [595426306] [2021-05-21 20:01:00,344 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [595426306] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:01:00,344 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:01:00,344 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-21 20:01:00,344 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [115576684] [2021-05-21 20:01:00,344 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:01:00,344 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:01:00,344 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:01:00,344 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:01:00,344 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) [2021-05-21 20:01:00,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:01:00,497 INFO L93 Difference]: Finished difference Result 717 states and 1804 transitions. [2021-05-21 20:01:00,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:01:00,497 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-05-21 20:01:00,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:01:00,498 INFO L225 Difference]: With dead ends: 717 [2021-05-21 20:01:00,498 INFO L226 Difference]: Without dead ends: 626 [2021-05-21 20:01:00,498 INFO L777 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 [2021-05-21 20:01:00,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 626 states. [2021-05-21 20:01:00,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 626 to 583. [2021-05-21 20:01:00,503 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) [2021-05-21 20:01:00,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 583 states to 583 states and 1475 transitions. [2021-05-21 20:01:00,504 INFO L78 Accepts]: Start accepts. Automaton has 583 states and 1475 transitions. Word has length 26 [2021-05-21 20:01:00,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:01:00,504 INFO L482 AbstractCegarLoop]: Abstraction has 583 states and 1475 transitions. [2021-05-21 20:01:00,504 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:01:00,504 INFO L276 IsEmpty]: Start isEmpty. Operand 583 states and 1475 transitions. [2021-05-21 20:01:00,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 20:01:00,504 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:01:00,504 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:01:00,504 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable343 [2021-05-21 20:01:00,504 INFO L430 AbstractCegarLoop]: === Iteration 345 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 20:01:00,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:01:00,506 INFO L82 PathProgramCache]: Analyzing trace with hash 240651560, now seen corresponding path program 343 times [2021-05-21 20:01:00,506 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:01:00,506 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1684543824] [2021-05-21 20:01:00,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:01:00,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:01:00,584 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:01:00,585 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:01:00,585 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1684543824] [2021-05-21 20:01:00,585 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1684543824] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:01:00,585 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:01:00,585 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-21 20:01:00,585 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1646619761] [2021-05-21 20:01:00,585 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:01:00,585 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:01:00,586 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:01:00,586 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:01:00,586 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) [2021-05-21 20:01:00,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:01:00,777 INFO L93 Difference]: Finished difference Result 697 states and 1755 transitions. [2021-05-21 20:01:00,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:01:00,777 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-05-21 20:01:00,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:01:00,778 INFO L225 Difference]: With dead ends: 697 [2021-05-21 20:01:00,778 INFO L226 Difference]: Without dead ends: 590 [2021-05-21 20:01:00,778 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 70.7ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:01:00,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 590 states. [2021-05-21 20:01:00,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 590 to 566. [2021-05-21 20:01:00,783 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) [2021-05-21 20:01:00,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 566 states to 566 states and 1427 transitions. [2021-05-21 20:01:00,783 INFO L78 Accepts]: Start accepts. Automaton has 566 states and 1427 transitions. Word has length 26 [2021-05-21 20:01:00,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:01:00,783 INFO L482 AbstractCegarLoop]: Abstraction has 566 states and 1427 transitions. [2021-05-21 20:01:00,783 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:01:00,784 INFO L276 IsEmpty]: Start isEmpty. Operand 566 states and 1427 transitions. [2021-05-21 20:01:00,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 20:01:00,784 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:01:00,784 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:01:00,784 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable344 [2021-05-21 20:01:00,784 INFO L430 AbstractCegarLoop]: === Iteration 346 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 20:01:00,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:01:00,784 INFO L82 PathProgramCache]: Analyzing trace with hash -1693780104, now seen corresponding path program 344 times [2021-05-21 20:01:00,785 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:01:00,785 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [55889919] [2021-05-21 20:01:00,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:01:00,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:01:00,838 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:01:00,838 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:01:00,838 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [55889919] [2021-05-21 20:01:00,838 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [55889919] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:01:00,838 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:01:00,838 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-21 20:01:00,838 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [438888667] [2021-05-21 20:01:00,838 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:01:00,838 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:01:00,839 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:01:00,839 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:01:00,839 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) [2021-05-21 20:01:00,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:01:00,989 INFO L93 Difference]: Finished difference Result 710 states and 1782 transitions. [2021-05-21 20:01:00,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:01:00,989 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-05-21 20:01:00,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:01:00,989 INFO L225 Difference]: With dead ends: 710 [2021-05-21 20:01:00,990 INFO L226 Difference]: Without dead ends: 593 [2021-05-21 20:01:00,990 INFO L777 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 [2021-05-21 20:01:00,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 593 states. [2021-05-21 20:01:00,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 593 to 593. [2021-05-21 20:01:00,994 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) [2021-05-21 20:01:00,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 593 states to 593 states and 1481 transitions. [2021-05-21 20:01:00,995 INFO L78 Accepts]: Start accepts. Automaton has 593 states and 1481 transitions. Word has length 26 [2021-05-21 20:01:00,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:01:00,995 INFO L482 AbstractCegarLoop]: Abstraction has 593 states and 1481 transitions. [2021-05-21 20:01:00,995 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) [2021-05-21 20:01:00,995 INFO L276 IsEmpty]: Start isEmpty. Operand 593 states and 1481 transitions. [2021-05-21 20:01:00,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 20:01:00,996 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:01:00,996 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:01:00,996 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable345 [2021-05-21 20:01:00,996 INFO L430 AbstractCegarLoop]: === Iteration 347 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 20:01:00,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:01:00,996 INFO L82 PathProgramCache]: Analyzing trace with hash -881577516, now seen corresponding path program 345 times [2021-05-21 20:01:00,996 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:01:00,996 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1862518265] [2021-05-21 20:01:00,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:01:00,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:01:01,048 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:01:01,048 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:01:01,048 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1862518265] [2021-05-21 20:01:01,048 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1862518265] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:01:01,048 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:01:01,048 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-21 20:01:01,048 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [290186288] [2021-05-21 20:01:01,048 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:01:01,048 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:01:01,049 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:01:01,049 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:01:01,049 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) [2021-05-21 20:01:01,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:01:01,194 INFO L93 Difference]: Finished difference Result 725 states and 1802 transitions. [2021-05-21 20:01:01,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:01:01,195 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 [2021-05-21 20:01:01,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:01:01,195 INFO L225 Difference]: With dead ends: 725 [2021-05-21 20:01:01,195 INFO L226 Difference]: Without dead ends: 603 [2021-05-21 20:01:01,195 INFO L777 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 [2021-05-21 20:01:01,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 603 states. [2021-05-21 20:01:01,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 603 to 593. [2021-05-21 20:01:01,200 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) [2021-05-21 20:01:01,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 593 states to 593 states and 1478 transitions. [2021-05-21 20:01:01,201 INFO L78 Accepts]: Start accepts. Automaton has 593 states and 1478 transitions. Word has length 26 [2021-05-21 20:01:01,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:01:01,201 INFO L482 AbstractCegarLoop]: Abstraction has 593 states and 1478 transitions. [2021-05-21 20:01:01,201 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) [2021-05-21 20:01:01,201 INFO L276 IsEmpty]: Start isEmpty. Operand 593 states and 1478 transitions. [2021-05-21 20:01:01,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 20:01:01,201 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:01:01,201 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:01:01,201 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable346 [2021-05-21 20:01:01,202 INFO L430 AbstractCegarLoop]: === Iteration 348 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 20:01:01,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:01:01,202 INFO L82 PathProgramCache]: Analyzing trace with hash -1910991236, now seen corresponding path program 346 times [2021-05-21 20:01:01,202 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:01:01,202 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1055669290] [2021-05-21 20:01:01,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:01:01,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:01:01,254 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:01:01,254 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:01:01,254 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1055669290] [2021-05-21 20:01:01,254 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1055669290] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:01:01,254 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:01:01,254 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-21 20:01:01,254 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [615161484] [2021-05-21 20:01:01,254 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:01:01,254 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:01:01,254 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:01:01,254 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:01:01,254 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) [2021-05-21 20:01:01,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:01:01,399 INFO L93 Difference]: Finished difference Result 740 states and 1834 transitions. [2021-05-21 20:01:01,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:01:01,399 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-05-21 20:01:01,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:01:01,399 INFO L225 Difference]: With dead ends: 740 [2021-05-21 20:01:01,400 INFO L226 Difference]: Without dead ends: 591 [2021-05-21 20:01:01,400 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 45.5ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:01:01,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 591 states. [2021-05-21 20:01:01,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 591 to 581. [2021-05-21 20:01:01,404 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) [2021-05-21 20:01:01,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 581 states to 581 states and 1442 transitions. [2021-05-21 20:01:01,405 INFO L78 Accepts]: Start accepts. Automaton has 581 states and 1442 transitions. Word has length 26 [2021-05-21 20:01:01,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:01:01,405 INFO L482 AbstractCegarLoop]: Abstraction has 581 states and 1442 transitions. [2021-05-21 20:01:01,405 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:01:01,405 INFO L276 IsEmpty]: Start isEmpty. Operand 581 states and 1442 transitions. [2021-05-21 20:01:01,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 20:01:01,406 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:01:01,406 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:01:01,406 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable347 [2021-05-21 20:01:01,406 INFO L430 AbstractCegarLoop]: === Iteration 349 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 20:01:01,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:01:01,406 INFO L82 PathProgramCache]: Analyzing trace with hash -1239429736, now seen corresponding path program 347 times [2021-05-21 20:01:01,406 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:01:01,406 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1094144847] [2021-05-21 20:01:01,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:01:01,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:01:01,458 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:01:01,458 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:01:01,458 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1094144847] [2021-05-21 20:01:01,459 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1094144847] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:01:01,459 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:01:01,459 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-21 20:01:01,459 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1391659726] [2021-05-21 20:01:01,459 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:01:01,459 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:01:01,459 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:01:01,459 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:01:01,459 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) [2021-05-21 20:01:01,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:01:01,605 INFO L93 Difference]: Finished difference Result 702 states and 1738 transitions. [2021-05-21 20:01:01,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:01:01,606 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-05-21 20:01:01,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:01:01,606 INFO L225 Difference]: With dead ends: 702 [2021-05-21 20:01:01,606 INFO L226 Difference]: Without dead ends: 558 [2021-05-21 20:01:01,606 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 45.8ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:01:01,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 558 states. [2021-05-21 20:01:01,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 558 to 542. [2021-05-21 20:01:01,611 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) [2021-05-21 20:01:01,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 542 states to 542 states and 1349 transitions. [2021-05-21 20:01:01,611 INFO L78 Accepts]: Start accepts. Automaton has 542 states and 1349 transitions. Word has length 26 [2021-05-21 20:01:01,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:01:01,611 INFO L482 AbstractCegarLoop]: Abstraction has 542 states and 1349 transitions. [2021-05-21 20:01:01,611 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:01:01,611 INFO L276 IsEmpty]: Start isEmpty. Operand 542 states and 1349 transitions. [2021-05-21 20:01:01,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 20:01:01,612 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:01:01,612 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:01:01,612 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable348 [2021-05-21 20:01:01,612 INFO L430 AbstractCegarLoop]: === Iteration 350 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 20:01:01,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:01:01,612 INFO L82 PathProgramCache]: Analyzing trace with hash -1233750690, now seen corresponding path program 348 times [2021-05-21 20:01:01,612 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:01:01,612 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [7890507] [2021-05-21 20:01:01,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:01:01,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:01:01,670 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:01:01,670 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:01:01,670 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [7890507] [2021-05-21 20:01:01,670 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [7890507] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:01:01,670 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:01:01,670 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-21 20:01:01,670 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1317861013] [2021-05-21 20:01:01,671 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:01:01,671 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:01:01,671 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:01:01,671 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:01:01,671 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) [2021-05-21 20:01:01,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:01:01,836 INFO L93 Difference]: Finished difference Result 644 states and 1595 transitions. [2021-05-21 20:01:01,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:01:01,836 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-05-21 20:01:01,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:01:01,837 INFO L225 Difference]: With dead ends: 644 [2021-05-21 20:01:01,837 INFO L226 Difference]: Without dead ends: 561 [2021-05-21 20:01:01,837 INFO L777 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 [2021-05-21 20:01:01,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 561 states. [2021-05-21 20:01:01,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 561 to 530. [2021-05-21 20:01:01,841 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) [2021-05-21 20:01:01,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 530 states to 530 states and 1306 transitions. [2021-05-21 20:01:01,842 INFO L78 Accepts]: Start accepts. Automaton has 530 states and 1306 transitions. Word has length 26 [2021-05-21 20:01:01,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:01:01,842 INFO L482 AbstractCegarLoop]: Abstraction has 530 states and 1306 transitions. [2021-05-21 20:01:01,842 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:01:01,842 INFO L276 IsEmpty]: Start isEmpty. Operand 530 states and 1306 transitions. [2021-05-21 20:01:01,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 20:01:01,842 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:01:01,842 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:01:01,843 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable349 [2021-05-21 20:01:01,843 INFO L430 AbstractCegarLoop]: === Iteration 351 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 20:01:01,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:01:01,843 INFO L82 PathProgramCache]: Analyzing trace with hash -364306082, now seen corresponding path program 349 times [2021-05-21 20:01:01,843 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:01:01,843 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [754228658] [2021-05-21 20:01:01,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:01:01,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:01:01,896 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:01:01,896 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:01:01,896 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [754228658] [2021-05-21 20:01:01,896 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [754228658] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:01:01,896 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:01:01,896 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-21 20:01:01,896 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [342710708] [2021-05-21 20:01:01,896 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:01:01,896 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:01:01,896 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:01:01,897 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:01:01,897 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) [2021-05-21 20:01:02,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:01:02,055 INFO L93 Difference]: Finished difference Result 663 states and 1624 transitions. [2021-05-21 20:01:02,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:01:02,056 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 [2021-05-21 20:01:02,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:01:02,057 INFO L225 Difference]: With dead ends: 663 [2021-05-21 20:01:02,057 INFO L226 Difference]: Without dead ends: 572 [2021-05-21 20:01:02,057 INFO L777 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 [2021-05-21 20:01:02,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 572 states. [2021-05-21 20:01:02,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 572 to 536. [2021-05-21 20:01:02,061 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) [2021-05-21 20:01:02,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 536 states to 536 states and 1315 transitions. [2021-05-21 20:01:02,062 INFO L78 Accepts]: Start accepts. Automaton has 536 states and 1315 transitions. Word has length 26 [2021-05-21 20:01:02,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:01:02,062 INFO L482 AbstractCegarLoop]: Abstraction has 536 states and 1315 transitions. [2021-05-21 20:01:02,062 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:01:02,062 INFO L276 IsEmpty]: Start isEmpty. Operand 536 states and 1315 transitions. [2021-05-21 20:01:02,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 20:01:02,063 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:01:02,063 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:01:02,063 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable350 [2021-05-21 20:01:02,063 INFO L430 AbstractCegarLoop]: === Iteration 352 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 20:01:02,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:01:02,063 INFO L82 PathProgramCache]: Analyzing trace with hash 1556377788, now seen corresponding path program 350 times [2021-05-21 20:01:02,063 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:01:02,063 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1860802762] [2021-05-21 20:01:02,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:01:02,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:01:02,116 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:01:02,116 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:01:02,116 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1860802762] [2021-05-21 20:01:02,116 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1860802762] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:01:02,116 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:01:02,116 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-21 20:01:02,117 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [932699444] [2021-05-21 20:01:02,117 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:01:02,117 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:01:02,117 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:01:02,117 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:01:02,117 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) [2021-05-21 20:01:02,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:01:02,274 INFO L93 Difference]: Finished difference Result 635 states and 1558 transitions. [2021-05-21 20:01:02,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:01:02,274 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-05-21 20:01:02,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:01:02,275 INFO L225 Difference]: With dead ends: 635 [2021-05-21 20:01:02,275 INFO L226 Difference]: Without dead ends: 550 [2021-05-21 20:01:02,275 INFO L777 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 [2021-05-21 20:01:02,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 550 states. [2021-05-21 20:01:02,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 550 to 539. [2021-05-21 20:01:02,279 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) [2021-05-21 20:01:02,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 539 states to 539 states and 1320 transitions. [2021-05-21 20:01:02,280 INFO L78 Accepts]: Start accepts. Automaton has 539 states and 1320 transitions. Word has length 26 [2021-05-21 20:01:02,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:01:02,280 INFO L482 AbstractCegarLoop]: Abstraction has 539 states and 1320 transitions. [2021-05-21 20:01:02,280 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:01:02,280 INFO L276 IsEmpty]: Start isEmpty. Operand 539 states and 1320 transitions. [2021-05-21 20:01:02,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 20:01:02,281 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:01:02,281 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:01:02,281 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable351 [2021-05-21 20:01:02,281 INFO L430 AbstractCegarLoop]: === Iteration 353 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 20:01:02,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:01:02,281 INFO L82 PathProgramCache]: Analyzing trace with hash -618651816, now seen corresponding path program 351 times [2021-05-21 20:01:02,281 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:01:02,281 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [240152487] [2021-05-21 20:01:02,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:01:02,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:01:02,334 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:01:02,335 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:01:02,335 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [240152487] [2021-05-21 20:01:02,335 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [240152487] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:01:02,335 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:01:02,335 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-21 20:01:02,335 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [789107062] [2021-05-21 20:01:02,335 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:01:02,335 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:01:02,335 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:01:02,335 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:01:02,335 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) [2021-05-21 20:01:02,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:01:02,490 INFO L93 Difference]: Finished difference Result 642 states and 1579 transitions. [2021-05-21 20:01:02,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:01:02,490 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-05-21 20:01:02,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:01:02,491 INFO L225 Difference]: With dead ends: 642 [2021-05-21 20:01:02,491 INFO L226 Difference]: Without dead ends: 546 [2021-05-21 20:01:02,491 INFO L777 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 [2021-05-21 20:01:02,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 546 states. [2021-05-21 20:01:02,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 546 to 536. [2021-05-21 20:01:02,495 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) [2021-05-21 20:01:02,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 536 states to 536 states and 1314 transitions. [2021-05-21 20:01:02,496 INFO L78 Accepts]: Start accepts. Automaton has 536 states and 1314 transitions. Word has length 26 [2021-05-21 20:01:02,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:01:02,496 INFO L482 AbstractCegarLoop]: Abstraction has 536 states and 1314 transitions. [2021-05-21 20:01:02,496 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) [2021-05-21 20:01:02,496 INFO L276 IsEmpty]: Start isEmpty. Operand 536 states and 1314 transitions. [2021-05-21 20:01:02,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 20:01:02,497 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:01:02,497 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:01:02,497 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable352 [2021-05-21 20:01:02,497 INFO L430 AbstractCegarLoop]: === Iteration 354 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 20:01:02,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:01:02,497 INFO L82 PathProgramCache]: Analyzing trace with hash -1505935746, now seen corresponding path program 352 times [2021-05-21 20:01:02,497 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:01:02,497 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1585318842] [2021-05-21 20:01:02,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:01:02,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:01:02,550 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:01:02,550 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:01:02,550 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1585318842] [2021-05-21 20:01:02,550 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1585318842] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:01:02,550 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:01:02,550 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-21 20:01:02,550 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1485537484] [2021-05-21 20:01:02,550 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:01:02,550 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:01:02,551 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:01:02,551 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:01:02,551 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) [2021-05-21 20:01:02,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:01:02,733 INFO L93 Difference]: Finished difference Result 646 states and 1576 transitions. [2021-05-21 20:01:02,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:01:02,733 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 [2021-05-21 20:01:02,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:01:02,734 INFO L225 Difference]: With dead ends: 646 [2021-05-21 20:01:02,734 INFO L226 Difference]: Without dead ends: 559 [2021-05-21 20:01:02,734 INFO L777 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 [2021-05-21 20:01:02,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 559 states. [2021-05-21 20:01:02,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 559 to 530. [2021-05-21 20:01:02,738 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) [2021-05-21 20:01:02,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 530 states to 530 states and 1295 transitions. [2021-05-21 20:01:02,739 INFO L78 Accepts]: Start accepts. Automaton has 530 states and 1295 transitions. Word has length 26 [2021-05-21 20:01:02,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:01:02,739 INFO L482 AbstractCegarLoop]: Abstraction has 530 states and 1295 transitions. [2021-05-21 20:01:02,739 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) [2021-05-21 20:01:02,739 INFO L276 IsEmpty]: Start isEmpty. Operand 530 states and 1295 transitions. [2021-05-21 20:01:02,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 20:01:02,739 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:01:02,739 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:01:02,739 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable353 [2021-05-21 20:01:02,739 INFO L430 AbstractCegarLoop]: === Iteration 355 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 20:01:02,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:01:02,739 INFO L82 PathProgramCache]: Analyzing trace with hash 1618588484, now seen corresponding path program 353 times [2021-05-21 20:01:02,740 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:01:02,740 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1314646910] [2021-05-21 20:01:02,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:01:02,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:01:02,794 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:01:02,794 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:01:02,794 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1314646910] [2021-05-21 20:01:02,794 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1314646910] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:01:02,794 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:01:02,794 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-21 20:01:02,794 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1706422488] [2021-05-21 20:01:02,794 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:01:02,794 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:01:02,794 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:01:02,794 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:01:02,794 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) [2021-05-21 20:01:02,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:01:02,955 INFO L93 Difference]: Finished difference Result 658 states and 1602 transitions. [2021-05-21 20:01:02,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:01:02,956 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 [2021-05-21 20:01:02,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:01:02,956 INFO L225 Difference]: With dead ends: 658 [2021-05-21 20:01:02,956 INFO L226 Difference]: Without dead ends: 567 [2021-05-21 20:01:02,956 INFO L777 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 [2021-05-21 20:01:02,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 567 states. [2021-05-21 20:01:02,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 567 to 530. [2021-05-21 20:01:02,961 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) [2021-05-21 20:01:02,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 530 states to 530 states and 1295 transitions. [2021-05-21 20:01:02,961 INFO L78 Accepts]: Start accepts. Automaton has 530 states and 1295 transitions. Word has length 26 [2021-05-21 20:01:02,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:01:02,961 INFO L482 AbstractCegarLoop]: Abstraction has 530 states and 1295 transitions. [2021-05-21 20:01:02,961 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:01:02,961 INFO L276 IsEmpty]: Start isEmpty. Operand 530 states and 1295 transitions. [2021-05-21 20:01:02,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 20:01:02,962 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:01:02,962 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:01:02,962 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable354 [2021-05-21 20:01:02,962 INFO L430 AbstractCegarLoop]: === Iteration 356 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 20:01:02,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:01:02,962 INFO L82 PathProgramCache]: Analyzing trace with hash 226443938, now seen corresponding path program 354 times [2021-05-21 20:01:02,962 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:01:02,962 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1328416692] [2021-05-21 20:01:02,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:01:02,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:01:03,039 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:01:03,039 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:01:03,040 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1328416692] [2021-05-21 20:01:03,040 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1328416692] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:01:03,040 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:01:03,040 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-21 20:01:03,040 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1845749764] [2021-05-21 20:01:03,040 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:01:03,040 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:01:03,040 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:01:03,040 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:01:03,040 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) [2021-05-21 20:01:03,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:01:03,193 INFO L93 Difference]: Finished difference Result 638 states and 1564 transitions. [2021-05-21 20:01:03,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:01:03,193 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-05-21 20:01:03,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:01:03,194 INFO L225 Difference]: With dead ends: 638 [2021-05-21 20:01:03,194 INFO L226 Difference]: Without dead ends: 541 [2021-05-21 20:01:03,194 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 70.3ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:01:03,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 541 states. [2021-05-21 20:01:03,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 541 to 528. [2021-05-21 20:01:03,198 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) [2021-05-21 20:01:03,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 528 states to 528 states and 1290 transitions. [2021-05-21 20:01:03,199 INFO L78 Accepts]: Start accepts. Automaton has 528 states and 1290 transitions. Word has length 26 [2021-05-21 20:01:03,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:01:03,199 INFO L482 AbstractCegarLoop]: Abstraction has 528 states and 1290 transitions. [2021-05-21 20:01:03,199 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) [2021-05-21 20:01:03,199 INFO L276 IsEmpty]: Start isEmpty. Operand 528 states and 1290 transitions. [2021-05-21 20:01:03,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 20:01:03,199 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:01:03,199 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:01:03,199 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable355 [2021-05-21 20:01:03,199 INFO L430 AbstractCegarLoop]: === Iteration 357 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 20:01:03,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:01:03,200 INFO L82 PathProgramCache]: Analyzing trace with hash 495599698, now seen corresponding path program 355 times [2021-05-21 20:01:03,200 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:01:03,200 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [89368724] [2021-05-21 20:01:03,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:01:03,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:01:03,253 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:01:03,253 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:01:03,253 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [89368724] [2021-05-21 20:01:03,253 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [89368724] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:01:03,254 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:01:03,254 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-21 20:01:03,254 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1952523600] [2021-05-21 20:01:03,254 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:01:03,254 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:01:03,254 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:01:03,254 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:01:03,254 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) [2021-05-21 20:01:03,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:01:03,409 INFO L93 Difference]: Finished difference Result 621 states and 1513 transitions. [2021-05-21 20:01:03,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:01:03,409 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 [2021-05-21 20:01:03,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:01:03,410 INFO L225 Difference]: With dead ends: 621 [2021-05-21 20:01:03,410 INFO L226 Difference]: Without dead ends: 536 [2021-05-21 20:01:03,410 INFO L777 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 [2021-05-21 20:01:03,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 536 states. [2021-05-21 20:01:03,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 536 to 516. [2021-05-21 20:01:03,414 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) [2021-05-21 20:01:03,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 516 states to 516 states and 1260 transitions. [2021-05-21 20:01:03,415 INFO L78 Accepts]: Start accepts. Automaton has 516 states and 1260 transitions. Word has length 26 [2021-05-21 20:01:03,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:01:03,415 INFO L482 AbstractCegarLoop]: Abstraction has 516 states and 1260 transitions. [2021-05-21 20:01:03,415 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) [2021-05-21 20:01:03,415 INFO L276 IsEmpty]: Start isEmpty. Operand 516 states and 1260 transitions. [2021-05-21 20:01:03,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 20:01:03,415 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:01:03,415 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:01:03,415 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable356 [2021-05-21 20:01:03,415 INFO L430 AbstractCegarLoop]: === Iteration 358 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 20:01:03,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:01:03,416 INFO L82 PathProgramCache]: Analyzing trace with hash -1679429906, now seen corresponding path program 356 times [2021-05-21 20:01:03,416 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:01:03,416 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [208242543] [2021-05-21 20:01:03,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:01:03,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:01:03,475 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:01:03,475 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:01:03,475 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [208242543] [2021-05-21 20:01:03,475 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [208242543] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:01:03,475 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:01:03,475 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-21 20:01:03,475 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971761933] [2021-05-21 20:01:03,476 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:01:03,476 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:01:03,476 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:01:03,476 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:01:03,476 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) [2021-05-21 20:01:03,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:01:03,627 INFO L93 Difference]: Finished difference Result 643 states and 1566 transitions. [2021-05-21 20:01:03,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:01:03,627 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-05-21 20:01:03,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:01:03,628 INFO L225 Difference]: With dead ends: 643 [2021-05-21 20:01:03,628 INFO L226 Difference]: Without dead ends: 541 [2021-05-21 20:01:03,628 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 52.7ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:01:03,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 541 states. [2021-05-21 20:01:03,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 541 to 501. [2021-05-21 20:01:03,632 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) [2021-05-21 20:01:03,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 501 states to 501 states and 1231 transitions. [2021-05-21 20:01:03,633 INFO L78 Accepts]: Start accepts. Automaton has 501 states and 1231 transitions. Word has length 26 [2021-05-21 20:01:03,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:01:03,633 INFO L482 AbstractCegarLoop]: Abstraction has 501 states and 1231 transitions. [2021-05-21 20:01:03,633 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:01:03,633 INFO L276 IsEmpty]: Start isEmpty. Operand 501 states and 1231 transitions. [2021-05-21 20:01:03,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 20:01:03,634 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:01:03,634 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:01:03,634 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable357 [2021-05-21 20:01:03,634 INFO L430 AbstractCegarLoop]: === Iteration 359 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 20:01:03,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:01:03,634 INFO L82 PathProgramCache]: Analyzing trace with hash 1763388200, now seen corresponding path program 357 times [2021-05-21 20:01:03,634 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:01:03,634 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [299199790] [2021-05-21 20:01:03,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:01:03,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:01:03,688 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:01:03,688 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:01:03,689 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [299199790] [2021-05-21 20:01:03,689 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [299199790] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:01:03,689 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:01:03,689 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-21 20:01:03,689 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [452378220] [2021-05-21 20:01:03,689 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:01:03,689 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:01:03,689 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:01:03,689 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:01:03,689 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) [2021-05-21 20:01:03,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:01:03,840 INFO L93 Difference]: Finished difference Result 600 states and 1466 transitions. [2021-05-21 20:01:03,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:01:03,840 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 [2021-05-21 20:01:03,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:01:03,840 INFO L225 Difference]: With dead ends: 600 [2021-05-21 20:01:03,840 INFO L226 Difference]: Without dead ends: 459 [2021-05-21 20:01:03,841 INFO L777 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 [2021-05-21 20:01:03,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 459 states. [2021-05-21 20:01:03,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 459 to 419. [2021-05-21 20:01:03,844 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) [2021-05-21 20:01:03,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 419 states to 419 states and 1031 transitions. [2021-05-21 20:01:03,845 INFO L78 Accepts]: Start accepts. Automaton has 419 states and 1031 transitions. Word has length 26 [2021-05-21 20:01:03,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:01:03,845 INFO L482 AbstractCegarLoop]: Abstraction has 419 states and 1031 transitions. [2021-05-21 20:01:03,845 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:01:03,845 INFO L276 IsEmpty]: Start isEmpty. Operand 419 states and 1031 transitions. [2021-05-21 20:01:03,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 20:01:03,845 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:01:03,845 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:01:03,845 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable358 [2021-05-21 20:01:03,845 INFO L430 AbstractCegarLoop]: === Iteration 360 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 20:01:03,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:01:03,845 INFO L82 PathProgramCache]: Analyzing trace with hash 323941484, now seen corresponding path program 358 times [2021-05-21 20:01:03,845 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:01:03,846 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1121523677] [2021-05-21 20:01:03,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:01:03,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:01:03,898 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:01:03,898 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:01:03,898 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1121523677] [2021-05-21 20:01:03,898 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1121523677] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:01:03,898 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:01:03,898 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-21 20:01:03,898 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [805295143] [2021-05-21 20:01:03,898 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:01:03,898 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:01:03,899 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:01:03,899 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:01:03,899 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) [2021-05-21 20:01:04,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:01:04,042 INFO L93 Difference]: Finished difference Result 544 states and 1325 transitions. [2021-05-21 20:01:04,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:01:04,042 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-05-21 20:01:04,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:01:04,043 INFO L225 Difference]: With dead ends: 544 [2021-05-21 20:01:04,043 INFO L226 Difference]: Without dead ends: 423 [2021-05-21 20:01:04,043 INFO L777 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 [2021-05-21 20:01:04,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 423 states. [2021-05-21 20:01:04,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 423 to 419. [2021-05-21 20:01:04,046 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) [2021-05-21 20:01:04,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 419 states to 419 states and 1021 transitions. [2021-05-21 20:01:04,047 INFO L78 Accepts]: Start accepts. Automaton has 419 states and 1021 transitions. Word has length 26 [2021-05-21 20:01:04,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:01:04,047 INFO L482 AbstractCegarLoop]: Abstraction has 419 states and 1021 transitions. [2021-05-21 20:01:04,047 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:01:04,047 INFO L276 IsEmpty]: Start isEmpty. Operand 419 states and 1021 transitions. [2021-05-21 20:01:04,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 20:01:04,047 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:01:04,047 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:01:04,047 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable359 [2021-05-21 20:01:04,047 INFO L430 AbstractCegarLoop]: === Iteration 361 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 20:01:04,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:01:04,047 INFO L82 PathProgramCache]: Analyzing trace with hash 2082614990, now seen corresponding path program 359 times [2021-05-21 20:01:04,048 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:01:04,048 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1078521423] [2021-05-21 20:01:04,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:01:04,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:01:04,100 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:01:04,100 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:01:04,100 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1078521423] [2021-05-21 20:01:04,100 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1078521423] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:01:04,100 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:01:04,100 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-21 20:01:04,100 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [812657136] [2021-05-21 20:01:04,100 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:01:04,100 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:01:04,101 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:01:04,101 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:01:04,101 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) [2021-05-21 20:01:04,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:01:04,242 INFO L93 Difference]: Finished difference Result 545 states and 1321 transitions. [2021-05-21 20:01:04,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:01:04,242 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-05-21 20:01:04,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:01:04,243 INFO L225 Difference]: With dead ends: 545 [2021-05-21 20:01:04,243 INFO L226 Difference]: Without dead ends: 429 [2021-05-21 20:01:04,243 INFO L777 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 [2021-05-21 20:01:04,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 429 states. [2021-05-21 20:01:04,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 429 to 423. [2021-05-21 20:01:04,246 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) [2021-05-21 20:01:04,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 423 states to 423 states and 1028 transitions. [2021-05-21 20:01:04,247 INFO L78 Accepts]: Start accepts. Automaton has 423 states and 1028 transitions. Word has length 26 [2021-05-21 20:01:04,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:01:04,247 INFO L482 AbstractCegarLoop]: Abstraction has 423 states and 1028 transitions. [2021-05-21 20:01:04,247 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:01:04,247 INFO L276 IsEmpty]: Start isEmpty. Operand 423 states and 1028 transitions. [2021-05-21 20:01:04,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 20:01:04,247 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:01:04,247 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:01:04,247 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable360 [2021-05-21 20:01:04,247 INFO L430 AbstractCegarLoop]: === Iteration 362 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 20:01:04,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:01:04,248 INFO L82 PathProgramCache]: Analyzing trace with hash 1483348368, now seen corresponding path program 360 times [2021-05-21 20:01:04,248 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:01:04,248 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [562096550] [2021-05-21 20:01:04,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:01:04,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:01:04,302 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:01:04,302 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:01:04,302 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [562096550] [2021-05-21 20:01:04,302 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [562096550] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:01:04,302 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:01:04,302 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-21 20:01:04,302 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1984097654] [2021-05-21 20:01:04,302 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:01:04,302 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:01:04,302 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:01:04,302 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:01:04,302 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) [2021-05-21 20:01:04,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:01:04,451 INFO L93 Difference]: Finished difference Result 536 states and 1302 transitions. [2021-05-21 20:01:04,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:01:04,451 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-05-21 20:01:04,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:01:04,452 INFO L225 Difference]: With dead ends: 536 [2021-05-21 20:01:04,452 INFO L226 Difference]: Without dead ends: 417 [2021-05-21 20:01:04,452 INFO L777 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 [2021-05-21 20:01:04,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 417 states. [2021-05-21 20:01:04,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 417 to 409. [2021-05-21 20:01:04,455 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) [2021-05-21 20:01:04,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 409 states to 409 states and 1001 transitions. [2021-05-21 20:01:04,456 INFO L78 Accepts]: Start accepts. Automaton has 409 states and 1001 transitions. Word has length 26 [2021-05-21 20:01:04,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:01:04,456 INFO L482 AbstractCegarLoop]: Abstraction has 409 states and 1001 transitions. [2021-05-21 20:01:04,456 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:01:04,456 INFO L276 IsEmpty]: Start isEmpty. Operand 409 states and 1001 transitions. [2021-05-21 20:01:04,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 20:01:04,456 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:01:04,456 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:01:04,456 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable361 [2021-05-21 20:01:04,456 INFO L430 AbstractCegarLoop]: === Iteration 363 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 20:01:04,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:01:04,457 INFO L82 PathProgramCache]: Analyzing trace with hash -1622263662, now seen corresponding path program 361 times [2021-05-21 20:01:04,457 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:01:04,457 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1876146696] [2021-05-21 20:01:04,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:01:04,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:01:04,503 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:01:04,504 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:01:04,504 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1876146696] [2021-05-21 20:01:04,504 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1876146696] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:01:04,504 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:01:04,504 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:01:04,504 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1221702196] [2021-05-21 20:01:04,504 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-21 20:01:04,504 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:01:04,504 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-21 20:01:04,504 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-05-21 20:01:04,504 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) [2021-05-21 20:01:04,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:01:04,632 INFO L93 Difference]: Finished difference Result 541 states and 1317 transitions. [2021-05-21 20:01:04,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-21 20:01:04,632 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 [2021-05-21 20:01:04,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:01:04,633 INFO L225 Difference]: With dead ends: 541 [2021-05-21 20:01:04,633 INFO L226 Difference]: Without dead ends: 430 [2021-05-21 20:01:04,633 INFO L777 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 [2021-05-21 20:01:04,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 430 states. [2021-05-21 20:01:04,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 430 to 426. [2021-05-21 20:01:04,636 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) [2021-05-21 20:01:04,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 426 states to 426 states and 1032 transitions. [2021-05-21 20:01:04,637 INFO L78 Accepts]: Start accepts. Automaton has 426 states and 1032 transitions. Word has length 26 [2021-05-21 20:01:04,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:01:04,637 INFO L482 AbstractCegarLoop]: Abstraction has 426 states and 1032 transitions. [2021-05-21 20:01:04,637 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) [2021-05-21 20:01:04,637 INFO L276 IsEmpty]: Start isEmpty. Operand 426 states and 1032 transitions. [2021-05-21 20:01:04,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 20:01:04,637 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:01:04,637 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:01:04,637 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable362 [2021-05-21 20:01:04,637 INFO L430 AbstractCegarLoop]: === Iteration 364 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 20:01:04,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:01:04,638 INFO L82 PathProgramCache]: Analyzing trace with hash 1764452498, now seen corresponding path program 362 times [2021-05-21 20:01:04,638 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:01:04,638 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [385433874] [2021-05-21 20:01:04,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:01:04,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:01:04,683 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:01:04,683 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:01:04,683 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [385433874] [2021-05-21 20:01:04,683 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [385433874] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:01:04,683 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:01:04,683 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:01:04,683 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [698845641] [2021-05-21 20:01:04,683 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-21 20:01:04,683 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:01:04,683 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-21 20:01:04,683 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-05-21 20:01:04,683 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) [2021-05-21 20:01:04,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:01:04,795 INFO L93 Difference]: Finished difference Result 544 states and 1316 transitions. [2021-05-21 20:01:04,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-21 20:01:04,795 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 [2021-05-21 20:01:04,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:01:04,795 INFO L225 Difference]: With dead ends: 544 [2021-05-21 20:01:04,795 INFO L226 Difference]: Without dead ends: 444 [2021-05-21 20:01:04,796 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 38.4ms TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-05-21 20:01:04,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 444 states. [2021-05-21 20:01:04,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 444 to 431. [2021-05-21 20:01:04,799 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) [2021-05-21 20:01:04,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 431 states to 431 states and 1043 transitions. [2021-05-21 20:01:04,800 INFO L78 Accepts]: Start accepts. Automaton has 431 states and 1043 transitions. Word has length 26 [2021-05-21 20:01:04,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:01:04,800 INFO L482 AbstractCegarLoop]: Abstraction has 431 states and 1043 transitions. [2021-05-21 20:01:04,800 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) [2021-05-21 20:01:04,800 INFO L276 IsEmpty]: Start isEmpty. Operand 431 states and 1043 transitions. [2021-05-21 20:01:04,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 20:01:04,800 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:01:04,800 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:01:04,800 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable363 [2021-05-21 20:01:04,800 INFO L430 AbstractCegarLoop]: === Iteration 365 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 20:01:04,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:01:04,800 INFO L82 PathProgramCache]: Analyzing trace with hash -1609938832, now seen corresponding path program 363 times [2021-05-21 20:01:04,801 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:01:04,801 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [160587977] [2021-05-21 20:01:04,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:01:04,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:01:04,846 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:01:04,846 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:01:04,846 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [160587977] [2021-05-21 20:01:04,846 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [160587977] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:01:04,846 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:01:04,846 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:01:04,846 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1500192735] [2021-05-21 20:01:04,846 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-21 20:01:04,846 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:01:04,846 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-21 20:01:04,846 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-05-21 20:01:04,846 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) [2021-05-21 20:01:04,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:01:04,958 INFO L93 Difference]: Finished difference Result 539 states and 1307 transitions. [2021-05-21 20:01:04,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-21 20:01:04,958 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 [2021-05-21 20:01:04,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:01:04,959 INFO L225 Difference]: With dead ends: 539 [2021-05-21 20:01:04,959 INFO L226 Difference]: Without dead ends: 431 [2021-05-21 20:01:04,959 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 38.4ms TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-05-21 20:01:04,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 431 states. [2021-05-21 20:01:04,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 431 to 414. [2021-05-21 20:01:04,962 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) [2021-05-21 20:01:04,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 414 states to 414 states and 1010 transitions. [2021-05-21 20:01:04,963 INFO L78 Accepts]: Start accepts. Automaton has 414 states and 1010 transitions. Word has length 26 [2021-05-21 20:01:04,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:01:04,963 INFO L482 AbstractCegarLoop]: Abstraction has 414 states and 1010 transitions. [2021-05-21 20:01:04,963 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) [2021-05-21 20:01:04,963 INFO L276 IsEmpty]: Start isEmpty. Operand 414 states and 1010 transitions. [2021-05-21 20:01:04,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 20:01:04,963 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:01:04,963 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:01:04,963 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable364 [2021-05-21 20:01:04,964 INFO L430 AbstractCegarLoop]: === Iteration 366 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 20:01:04,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:01:04,964 INFO L82 PathProgramCache]: Analyzing trace with hash 2058833742, now seen corresponding path program 364 times [2021-05-21 20:01:04,964 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:01:04,964 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1792277014] [2021-05-21 20:01:04,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:01:04,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:01:05,021 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:01:05,021 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:01:05,021 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1792277014] [2021-05-21 20:01:05,021 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1792277014] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:01:05,021 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:01:05,021 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-21 20:01:05,021 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1784540401] [2021-05-21 20:01:05,021 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:01:05,021 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:01:05,021 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:01:05,021 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:01:05,022 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) [2021-05-21 20:01:05,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:01:05,177 INFO L93 Difference]: Finished difference Result 552 states and 1354 transitions. [2021-05-21 20:01:05,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:01:05,177 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 [2021-05-21 20:01:05,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:01:05,178 INFO L225 Difference]: With dead ends: 552 [2021-05-21 20:01:05,178 INFO L226 Difference]: Without dead ends: 447 [2021-05-21 20:01:05,178 INFO L777 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 [2021-05-21 20:01:05,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 447 states. [2021-05-21 20:01:05,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 447 to 426. [2021-05-21 20:01:05,181 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) [2021-05-21 20:01:05,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 426 states to 426 states and 1049 transitions. [2021-05-21 20:01:05,182 INFO L78 Accepts]: Start accepts. Automaton has 426 states and 1049 transitions. Word has length 26 [2021-05-21 20:01:05,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:01:05,182 INFO L482 AbstractCegarLoop]: Abstraction has 426 states and 1049 transitions. [2021-05-21 20:01:05,182 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:01:05,182 INFO L276 IsEmpty]: Start isEmpty. Operand 426 states and 1049 transitions. [2021-05-21 20:01:05,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 20:01:05,182 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:01:05,182 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:01:05,182 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable365 [2021-05-21 20:01:05,183 INFO L430 AbstractCegarLoop]: === Iteration 367 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 20:01:05,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:01:05,183 INFO L82 PathProgramCache]: Analyzing trace with hash -331419052, now seen corresponding path program 365 times [2021-05-21 20:01:05,183 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:01:05,183 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [765056521] [2021-05-21 20:01:05,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:01:05,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:01:05,242 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:01:05,242 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:01:05,242 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [765056521] [2021-05-21 20:01:05,242 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [765056521] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:01:05,242 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:01:05,242 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-21 20:01:05,242 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [215212873] [2021-05-21 20:01:05,242 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:01:05,242 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:01:05,243 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:01:05,243 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:01:05,243 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) [2021-05-21 20:01:05,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:01:05,390 INFO L93 Difference]: Finished difference Result 587 states and 1441 transitions. [2021-05-21 20:01:05,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:01:05,390 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-05-21 20:01:05,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:01:05,391 INFO L225 Difference]: With dead ends: 587 [2021-05-21 20:01:05,391 INFO L226 Difference]: Without dead ends: 454 [2021-05-21 20:01:05,391 INFO L777 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 [2021-05-21 20:01:05,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 454 states. [2021-05-21 20:01:05,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 454 to 438. [2021-05-21 20:01:05,395 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) [2021-05-21 20:01:05,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 438 states to 438 states and 1076 transitions. [2021-05-21 20:01:05,395 INFO L78 Accepts]: Start accepts. Automaton has 438 states and 1076 transitions. Word has length 26 [2021-05-21 20:01:05,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:01:05,395 INFO L482 AbstractCegarLoop]: Abstraction has 438 states and 1076 transitions. [2021-05-21 20:01:05,395 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:01:05,395 INFO L276 IsEmpty]: Start isEmpty. Operand 438 states and 1076 transitions. [2021-05-21 20:01:05,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 20:01:05,396 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:01:05,396 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:01:05,396 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable366 [2021-05-21 20:01:05,396 INFO L430 AbstractCegarLoop]: === Iteration 368 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 20:01:05,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:01:05,396 INFO L82 PathProgramCache]: Analyzing trace with hash -2118876052, now seen corresponding path program 366 times [2021-05-21 20:01:05,396 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:01:05,396 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [683523347] [2021-05-21 20:01:05,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:01:05,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:01:05,450 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:01:05,450 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:01:05,450 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [683523347] [2021-05-21 20:01:05,450 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [683523347] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:01:05,450 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:01:05,450 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-21 20:01:05,450 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [964255307] [2021-05-21 20:01:05,450 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:01:05,450 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:01:05,450 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:01:05,450 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:01:05,450 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) [2021-05-21 20:01:05,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:01:05,601 INFO L93 Difference]: Finished difference Result 557 states and 1384 transitions. [2021-05-21 20:01:05,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:01:05,602 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-05-21 20:01:05,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:01:05,602 INFO L225 Difference]: With dead ends: 557 [2021-05-21 20:01:05,602 INFO L226 Difference]: Without dead ends: 460 [2021-05-21 20:01:05,602 INFO L777 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 [2021-05-21 20:01:05,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 460 states. [2021-05-21 20:01:05,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 460 to 443. [2021-05-21 20:01:05,606 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) [2021-05-21 20:01:05,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 443 states to 443 states and 1091 transitions. [2021-05-21 20:01:05,606 INFO L78 Accepts]: Start accepts. Automaton has 443 states and 1091 transitions. Word has length 26 [2021-05-21 20:01:05,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:01:05,606 INFO L482 AbstractCegarLoop]: Abstraction has 443 states and 1091 transitions. [2021-05-21 20:01:05,606 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) [2021-05-21 20:01:05,607 INFO L276 IsEmpty]: Start isEmpty. Operand 443 states and 1091 transitions. [2021-05-21 20:01:05,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 20:01:05,607 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:01:05,607 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:01:05,607 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable367 [2021-05-21 20:01:05,607 INFO L430 AbstractCegarLoop]: === Iteration 369 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 20:01:05,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:01:05,607 INFO L82 PathProgramCache]: Analyzing trace with hash 607162702, now seen corresponding path program 367 times [2021-05-21 20:01:05,607 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:01:05,607 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1359538591] [2021-05-21 20:01:05,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:01:05,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:01:05,663 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:01:05,663 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:01:05,663 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1359538591] [2021-05-21 20:01:05,663 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1359538591] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:01:05,663 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:01:05,663 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-21 20:01:05,663 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1260893438] [2021-05-21 20:01:05,663 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:01:05,663 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:01:05,664 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:01:05,664 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:01:05,664 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) [2021-05-21 20:01:05,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:01:05,803 INFO L93 Difference]: Finished difference Result 553 states and 1364 transitions. [2021-05-21 20:01:05,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:01:05,804 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-05-21 20:01:05,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:01:05,804 INFO L225 Difference]: With dead ends: 553 [2021-05-21 20:01:05,804 INFO L226 Difference]: Without dead ends: 448 [2021-05-21 20:01:05,804 INFO L777 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 [2021-05-21 20:01:05,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 448 states. [2021-05-21 20:01:05,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 448 to 426. [2021-05-21 20:01:05,808 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) [2021-05-21 20:01:05,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 426 states to 426 states and 1039 transitions. [2021-05-21 20:01:05,808 INFO L78 Accepts]: Start accepts. Automaton has 426 states and 1039 transitions. Word has length 26 [2021-05-21 20:01:05,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:01:05,808 INFO L482 AbstractCegarLoop]: Abstraction has 426 states and 1039 transitions. [2021-05-21 20:01:05,808 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) [2021-05-21 20:01:05,808 INFO L276 IsEmpty]: Start isEmpty. Operand 426 states and 1039 transitions. [2021-05-21 20:01:05,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 20:01:05,809 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:01:05,809 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:01:05,809 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable368 [2021-05-21 20:01:05,809 INFO L430 AbstractCegarLoop]: === Iteration 370 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 20:01:05,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:01:05,809 INFO L82 PathProgramCache]: Analyzing trace with hash 860847822, now seen corresponding path program 368 times [2021-05-21 20:01:05,809 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:01:05,809 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2022915750] [2021-05-21 20:01:05,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:01:05,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:01:05,863 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:01:05,863 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:01:05,863 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2022915750] [2021-05-21 20:01:05,863 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2022915750] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:01:05,863 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:01:05,863 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-21 20:01:05,864 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455973534] [2021-05-21 20:01:05,864 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:01:05,864 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:01:05,864 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:01:05,864 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:01:05,864 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) [2021-05-21 20:01:06,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:01:06,018 INFO L93 Difference]: Finished difference Result 558 states and 1354 transitions. [2021-05-21 20:01:06,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:01:06,018 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-05-21 20:01:06,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:01:06,019 INFO L225 Difference]: With dead ends: 558 [2021-05-21 20:01:06,019 INFO L226 Difference]: Without dead ends: 451 [2021-05-21 20:01:06,019 INFO L777 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 [2021-05-21 20:01:06,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 451 states. [2021-05-21 20:01:06,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 451 to 436. [2021-05-21 20:01:06,023 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) [2021-05-21 20:01:06,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 436 states to 436 states and 1061 transitions. [2021-05-21 20:01:06,023 INFO L78 Accepts]: Start accepts. Automaton has 436 states and 1061 transitions. Word has length 26 [2021-05-21 20:01:06,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:01:06,023 INFO L482 AbstractCegarLoop]: Abstraction has 436 states and 1061 transitions. [2021-05-21 20:01:06,023 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:01:06,023 INFO L276 IsEmpty]: Start isEmpty. Operand 436 states and 1061 transitions. [2021-05-21 20:01:06,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 20:01:06,024 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:01:06,024 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:01:06,024 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable369 [2021-05-21 20:01:06,024 INFO L430 AbstractCegarLoop]: === Iteration 371 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 20:01:06,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:01:06,024 INFO L82 PathProgramCache]: Analyzing trace with hash 261581200, now seen corresponding path program 369 times [2021-05-21 20:01:06,024 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:01:06,024 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [317504521] [2021-05-21 20:01:06,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:01:06,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:01:06,085 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:01:06,085 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:01:06,085 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [317504521] [2021-05-21 20:01:06,085 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [317504521] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:01:06,086 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:01:06,086 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-21 20:01:06,086 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1576274463] [2021-05-21 20:01:06,086 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:01:06,086 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:01:06,086 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:01:06,086 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:01:06,086 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) [2021-05-21 20:01:06,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:01:06,236 INFO L93 Difference]: Finished difference Result 542 states and 1322 transitions. [2021-05-21 20:01:06,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:01:06,237 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-05-21 20:01:06,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:01:06,237 INFO L225 Difference]: With dead ends: 542 [2021-05-21 20:01:06,237 INFO L226 Difference]: Without dead ends: 443 [2021-05-21 20:01:06,237 INFO L777 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 [2021-05-21 20:01:06,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 443 states. [2021-05-21 20:01:06,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 443 to 438. [2021-05-21 20:01:06,241 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) [2021-05-21 20:01:06,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 438 states to 438 states and 1066 transitions. [2021-05-21 20:01:06,241 INFO L78 Accepts]: Start accepts. Automaton has 438 states and 1066 transitions. Word has length 26 [2021-05-21 20:01:06,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:01:06,242 INFO L482 AbstractCegarLoop]: Abstraction has 438 states and 1066 transitions. [2021-05-21 20:01:06,242 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) [2021-05-21 20:01:06,242 INFO L276 IsEmpty]: Start isEmpty. Operand 438 states and 1066 transitions. [2021-05-21 20:01:06,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 20:01:06,242 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:01:06,242 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:01:06,242 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable370 [2021-05-21 20:01:06,242 INFO L430 AbstractCegarLoop]: === Iteration 372 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 20:01:06,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:01:06,242 INFO L82 PathProgramCache]: Analyzing trace with hash 654039856, now seen corresponding path program 370 times [2021-05-21 20:01:06,242 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:01:06,242 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [731901680] [2021-05-21 20:01:06,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:01:06,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:01:06,297 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:01:06,297 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:01:06,297 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [731901680] [2021-05-21 20:01:06,297 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [731901680] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:01:06,297 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:01:06,297 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-21 20:01:06,297 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1251602863] [2021-05-21 20:01:06,297 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:01:06,298 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:01:06,298 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:01:06,298 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:01:06,298 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) [2021-05-21 20:01:06,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:01:06,438 INFO L93 Difference]: Finished difference Result 571 states and 1384 transitions. [2021-05-21 20:01:06,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:01:06,438 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-05-21 20:01:06,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:01:06,438 INFO L225 Difference]: With dead ends: 571 [2021-05-21 20:01:06,438 INFO L226 Difference]: Without dead ends: 461 [2021-05-21 20:01:06,438 INFO L777 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 [2021-05-21 20:01:06,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 461 states. [2021-05-21 20:01:06,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 461 to 445. [2021-05-21 20:01:06,442 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) [2021-05-21 20:01:06,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 445 states to 445 states and 1082 transitions. [2021-05-21 20:01:06,443 INFO L78 Accepts]: Start accepts. Automaton has 445 states and 1082 transitions. Word has length 26 [2021-05-21 20:01:06,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:01:06,443 INFO L482 AbstractCegarLoop]: Abstraction has 445 states and 1082 transitions. [2021-05-21 20:01:06,443 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:01:06,443 INFO L276 IsEmpty]: Start isEmpty. Operand 445 states and 1082 transitions. [2021-05-21 20:01:06,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 20:01:06,443 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:01:06,443 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:01:06,443 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable371 [2021-05-21 20:01:06,443 INFO L430 AbstractCegarLoop]: === Iteration 373 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 20:01:06,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:01:06,443 INFO L82 PathProgramCache]: Analyzing trace with hash -850798962, now seen corresponding path program 371 times [2021-05-21 20:01:06,443 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:01:06,444 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1304200348] [2021-05-21 20:01:06,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:01:06,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:01:06,497 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:01:06,497 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:01:06,497 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1304200348] [2021-05-21 20:01:06,497 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1304200348] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:01:06,497 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:01:06,497 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-21 20:01:06,498 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [76362685] [2021-05-21 20:01:06,498 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:01:06,498 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:01:06,498 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:01:06,498 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:01:06,498 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) [2021-05-21 20:01:06,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:01:06,638 INFO L93 Difference]: Finished difference Result 570 states and 1380 transitions. [2021-05-21 20:01:06,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:01:06,639 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-05-21 20:01:06,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:01:06,639 INFO L225 Difference]: With dead ends: 570 [2021-05-21 20:01:06,639 INFO L226 Difference]: Without dead ends: 468 [2021-05-21 20:01:06,639 INFO L777 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 [2021-05-21 20:01:06,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 468 states. [2021-05-21 20:01:06,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 468 to 452. [2021-05-21 20:01:06,643 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) [2021-05-21 20:01:06,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 452 states to 452 states and 1097 transitions. [2021-05-21 20:01:06,643 INFO L78 Accepts]: Start accepts. Automaton has 452 states and 1097 transitions. Word has length 26 [2021-05-21 20:01:06,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:01:06,643 INFO L482 AbstractCegarLoop]: Abstraction has 452 states and 1097 transitions. [2021-05-21 20:01:06,643 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:01:06,644 INFO L276 IsEmpty]: Start isEmpty. Operand 452 states and 1097 transitions. [2021-05-21 20:01:06,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 20:01:06,644 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:01:06,644 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:01:06,644 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable372 [2021-05-21 20:01:06,644 INFO L430 AbstractCegarLoop]: === Iteration 374 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 20:01:06,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:01:06,644 INFO L82 PathProgramCache]: Analyzing trace with hash 1773999346, now seen corresponding path program 372 times [2021-05-21 20:01:06,644 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:01:06,644 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2114598604] [2021-05-21 20:01:06,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:01:06,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:01:06,704 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:01:06,704 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:01:06,704 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2114598604] [2021-05-21 20:01:06,704 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2114598604] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:01:06,704 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:01:06,704 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-21 20:01:06,704 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [378649464] [2021-05-21 20:01:06,704 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:01:06,704 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:01:06,704 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:01:06,704 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:01:06,705 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) [2021-05-21 20:01:06,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:01:06,857 INFO L93 Difference]: Finished difference Result 564 states and 1379 transitions. [2021-05-21 20:01:06,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:01:06,858 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 [2021-05-21 20:01:06,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:01:06,858 INFO L225 Difference]: With dead ends: 564 [2021-05-21 20:01:06,858 INFO L226 Difference]: Without dead ends: 467 [2021-05-21 20:01:06,858 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 52.6ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:01:06,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 467 states. [2021-05-21 20:01:06,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 467 to 457. [2021-05-21 20:01:06,862 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) [2021-05-21 20:01:06,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 457 states to 457 states and 1112 transitions. [2021-05-21 20:01:06,863 INFO L78 Accepts]: Start accepts. Automaton has 457 states and 1112 transitions. Word has length 26 [2021-05-21 20:01:06,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:01:06,863 INFO L482 AbstractCegarLoop]: Abstraction has 457 states and 1112 transitions. [2021-05-21 20:01:06,863 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:01:06,863 INFO L276 IsEmpty]: Start isEmpty. Operand 457 states and 1112 transitions. [2021-05-21 20:01:06,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 20:01:06,863 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:01:06,863 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:01:06,863 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable373 [2021-05-21 20:01:06,863 INFO L430 AbstractCegarLoop]: === Iteration 375 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 20:01:06,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:01:06,863 INFO L82 PathProgramCache]: Analyzing trace with hash 381854800, now seen corresponding path program 373 times [2021-05-21 20:01:06,864 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:01:06,864 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1703408241] [2021-05-21 20:01:06,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:01:06,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:01:06,918 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:01:06,918 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:01:06,918 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1703408241] [2021-05-21 20:01:06,918 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1703408241] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:01:06,918 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:01:06,918 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-21 20:01:06,918 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [55573564] [2021-05-21 20:01:06,919 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:01:06,919 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:01:06,919 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:01:06,919 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:01:06,919 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) [2021-05-21 20:01:07,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:01:07,058 INFO L93 Difference]: Finished difference Result 564 states and 1377 transitions. [2021-05-21 20:01:07,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:01:07,059 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-05-21 20:01:07,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:01:07,059 INFO L225 Difference]: With dead ends: 564 [2021-05-21 20:01:07,059 INFO L226 Difference]: Without dead ends: 460 [2021-05-21 20:01:07,059 INFO L777 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 [2021-05-21 20:01:07,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 460 states. [2021-05-21 20:01:07,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 460 to 445. [2021-05-21 20:01:07,063 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) [2021-05-21 20:01:07,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 445 states to 445 states and 1081 transitions. [2021-05-21 20:01:07,063 INFO L78 Accepts]: Start accepts. Automaton has 445 states and 1081 transitions. Word has length 26 [2021-05-21 20:01:07,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:01:07,063 INFO L482 AbstractCegarLoop]: Abstraction has 445 states and 1081 transitions. [2021-05-21 20:01:07,063 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:01:07,063 INFO L276 IsEmpty]: Start isEmpty. Operand 445 states and 1081 transitions. [2021-05-21 20:01:07,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 20:01:07,064 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:01:07,064 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:01:07,064 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable374 [2021-05-21 20:01:07,064 INFO L430 AbstractCegarLoop]: === Iteration 376 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 20:01:07,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:01:07,064 INFO L82 PathProgramCache]: Analyzing trace with hash 558338404, now seen corresponding path program 374 times [2021-05-21 20:01:07,064 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:01:07,064 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1790943226] [2021-05-21 20:01:07,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:01:07,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:01:07,116 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:01:07,116 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:01:07,116 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1790943226] [2021-05-21 20:01:07,117 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1790943226] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:01:07,117 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:01:07,117 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-21 20:01:07,117 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [571424977] [2021-05-21 20:01:07,117 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:01:07,117 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:01:07,117 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:01:07,117 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:01:07,117 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) [2021-05-21 20:01:07,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:01:07,255 INFO L93 Difference]: Finished difference Result 598 states and 1453 transitions. [2021-05-21 20:01:07,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:01:07,256 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-05-21 20:01:07,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:01:07,256 INFO L225 Difference]: With dead ends: 598 [2021-05-21 20:01:07,256 INFO L226 Difference]: Without dead ends: 471 [2021-05-21 20:01:07,256 INFO L777 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 [2021-05-21 20:01:07,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 471 states. [2021-05-21 20:01:07,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 471 to 445. [2021-05-21 20:01:07,260 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) [2021-05-21 20:01:07,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 445 states to 445 states and 1077 transitions. [2021-05-21 20:01:07,260 INFO L78 Accepts]: Start accepts. Automaton has 445 states and 1077 transitions. Word has length 26 [2021-05-21 20:01:07,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:01:07,260 INFO L482 AbstractCegarLoop]: Abstraction has 445 states and 1077 transitions. [2021-05-21 20:01:07,261 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) [2021-05-21 20:01:07,261 INFO L276 IsEmpty]: Start isEmpty. Operand 445 states and 1077 transitions. [2021-05-21 20:01:07,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 20:01:07,261 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:01:07,261 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:01:07,261 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable375 [2021-05-21 20:01:07,261 INFO L430 AbstractCegarLoop]: === Iteration 377 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 20:01:07,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:01:07,261 INFO L82 PathProgramCache]: Analyzing trace with hash 675595906, now seen corresponding path program 375 times [2021-05-21 20:01:07,261 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:01:07,261 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1694135004] [2021-05-21 20:01:07,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:01:07,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:01:07,314 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:01:07,314 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:01:07,314 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1694135004] [2021-05-21 20:01:07,314 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1694135004] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:01:07,314 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:01:07,315 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-21 20:01:07,315 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [643093043] [2021-05-21 20:01:07,315 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:01:07,315 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:01:07,315 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:01:07,315 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:01:07,315 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) [2021-05-21 20:01:07,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:01:07,460 INFO L93 Difference]: Finished difference Result 583 states and 1427 transitions. [2021-05-21 20:01:07,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:01:07,460 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-05-21 20:01:07,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:01:07,461 INFO L225 Difference]: With dead ends: 583 [2021-05-21 20:01:07,461 INFO L226 Difference]: Without dead ends: 464 [2021-05-21 20:01:07,461 INFO L777 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 [2021-05-21 20:01:07,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 464 states. [2021-05-21 20:01:07,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 464 to 450. [2021-05-21 20:01:07,464 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) [2021-05-21 20:01:07,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 450 states to 450 states and 1092 transitions. [2021-05-21 20:01:07,465 INFO L78 Accepts]: Start accepts. Automaton has 450 states and 1092 transitions. Word has length 26 [2021-05-21 20:01:07,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:01:07,465 INFO L482 AbstractCegarLoop]: Abstraction has 450 states and 1092 transitions. [2021-05-21 20:01:07,465 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:01:07,465 INFO L276 IsEmpty]: Start isEmpty. Operand 450 states and 1092 transitions. [2021-05-21 20:01:07,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 20:01:07,465 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:01:07,466 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:01:07,466 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable376 [2021-05-21 20:01:07,466 INFO L430 AbstractCegarLoop]: === Iteration 378 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 20:01:07,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:01:07,466 INFO L82 PathProgramCache]: Analyzing trace with hash -893332636, now seen corresponding path program 376 times [2021-05-21 20:01:07,466 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:01:07,466 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1702833398] [2021-05-21 20:01:07,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:01:07,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:01:07,534 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:01:07,534 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:01:07,534 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1702833398] [2021-05-21 20:01:07,535 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1702833398] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:01:07,535 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:01:07,535 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-21 20:01:07,535 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [653781222] [2021-05-21 20:01:07,535 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:01:07,535 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:01:07,535 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:01:07,535 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:01:07,535 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) [2021-05-21 20:01:07,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:01:07,686 INFO L93 Difference]: Finished difference Result 599 states and 1449 transitions. [2021-05-21 20:01:07,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:01:07,686 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-05-21 20:01:07,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:01:07,686 INFO L225 Difference]: With dead ends: 599 [2021-05-21 20:01:07,687 INFO L226 Difference]: Without dead ends: 472 [2021-05-21 20:01:07,687 INFO L777 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 [2021-05-21 20:01:07,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 472 states. [2021-05-21 20:01:07,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 472 to 450. [2021-05-21 20:01:07,690 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) [2021-05-21 20:01:07,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 450 states to 450 states and 1072 transitions. [2021-05-21 20:01:07,691 INFO L78 Accepts]: Start accepts. Automaton has 450 states and 1072 transitions. Word has length 26 [2021-05-21 20:01:07,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:01:07,691 INFO L482 AbstractCegarLoop]: Abstraction has 450 states and 1072 transitions. [2021-05-21 20:01:07,691 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) [2021-05-21 20:01:07,691 INFO L276 IsEmpty]: Start isEmpty. Operand 450 states and 1072 transitions. [2021-05-21 20:01:07,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 20:01:07,691 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:01:07,691 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:01:07,691 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable377 [2021-05-21 20:01:07,691 INFO L430 AbstractCegarLoop]: === Iteration 379 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 20:01:07,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:01:07,692 INFO L82 PathProgramCache]: Analyzing trace with hash -700651216, now seen corresponding path program 377 times [2021-05-21 20:01:07,692 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:01:07,692 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1179637041] [2021-05-21 20:01:07,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:01:07,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:01:07,744 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:01:07,744 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:01:07,744 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1179637041] [2021-05-21 20:01:07,744 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1179637041] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:01:07,744 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:01:07,744 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-21 20:01:07,744 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [87163436] [2021-05-21 20:01:07,745 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:01:07,745 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:01:07,745 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:01:07,745 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:01:07,745 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) [2021-05-21 20:01:07,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:01:07,879 INFO L93 Difference]: Finished difference Result 553 states and 1321 transitions. [2021-05-21 20:01:07,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:01:07,879 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-05-21 20:01:07,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:01:07,880 INFO L225 Difference]: With dead ends: 553 [2021-05-21 20:01:07,880 INFO L226 Difference]: Without dead ends: 420 [2021-05-21 20:01:07,880 INFO L777 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 [2021-05-21 20:01:07,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 420 states. [2021-05-21 20:01:07,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 420 to 403. [2021-05-21 20:01:07,883 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) [2021-05-21 20:01:07,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 403 states to 403 states and 960 transitions. [2021-05-21 20:01:07,884 INFO L78 Accepts]: Start accepts. Automaton has 403 states and 960 transitions. Word has length 26 [2021-05-21 20:01:07,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:01:07,884 INFO L482 AbstractCegarLoop]: Abstraction has 403 states and 960 transitions. [2021-05-21 20:01:07,884 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:01:07,884 INFO L276 IsEmpty]: Start isEmpty. Operand 403 states and 960 transitions. [2021-05-21 20:01:07,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 20:01:07,884 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:01:07,884 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:01:07,884 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable378 [2021-05-21 20:01:07,884 INFO L430 AbstractCegarLoop]: === Iteration 380 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 20:01:07,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:01:07,885 INFO L82 PathProgramCache]: Analyzing trace with hash 25600402, now seen corresponding path program 378 times [2021-05-21 20:01:07,885 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:01:07,885 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1691168217] [2021-05-21 20:01:07,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:01:07,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:01:07,951 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:01:07,951 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:01:07,951 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1691168217] [2021-05-21 20:01:07,951 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1691168217] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:01:07,951 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:01:07,951 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:01:07,951 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1314967412] [2021-05-21 20:01:07,951 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-21 20:01:07,951 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:01:07,951 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-21 20:01:07,951 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-05-21 20:01:07,952 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) [2021-05-21 20:01:08,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:01:08,073 INFO L93 Difference]: Finished difference Result 542 states and 1283 transitions. [2021-05-21 20:01:08,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-21 20:01:08,073 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 [2021-05-21 20:01:08,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:01:08,073 INFO L225 Difference]: With dead ends: 542 [2021-05-21 20:01:08,074 INFO L226 Difference]: Without dead ends: 426 [2021-05-21 20:01:08,074 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 54.3ms TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-05-21 20:01:08,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 426 states. [2021-05-21 20:01:08,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 426 to 413. [2021-05-21 20:01:08,077 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) [2021-05-21 20:01:08,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 413 states to 413 states and 974 transitions. [2021-05-21 20:01:08,077 INFO L78 Accepts]: Start accepts. Automaton has 413 states and 974 transitions. Word has length 26 [2021-05-21 20:01:08,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:01:08,077 INFO L482 AbstractCegarLoop]: Abstraction has 413 states and 974 transitions. [2021-05-21 20:01:08,077 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) [2021-05-21 20:01:08,078 INFO L276 IsEmpty]: Start isEmpty. Operand 413 states and 974 transitions. [2021-05-21 20:01:08,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 20:01:08,078 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:01:08,078 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:01:08,078 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable379 [2021-05-21 20:01:08,078 INFO L430 AbstractCegarLoop]: === Iteration 381 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 20:01:08,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:01:08,078 INFO L82 PathProgramCache]: Analyzing trace with hash -573666220, now seen corresponding path program 379 times [2021-05-21 20:01:08,078 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:01:08,078 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [27371346] [2021-05-21 20:01:08,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:01:08,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:01:08,136 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:01:08,136 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:01:08,136 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [27371346] [2021-05-21 20:01:08,136 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [27371346] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:01:08,136 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:01:08,137 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-21 20:01:08,137 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1664336945] [2021-05-21 20:01:08,137 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:01:08,137 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:01:08,137 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:01:08,137 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:01:08,137 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) [2021-05-21 20:01:08,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:01:08,278 INFO L93 Difference]: Finished difference Result 537 states and 1263 transitions. [2021-05-21 20:01:08,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:01:08,278 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-05-21 20:01:08,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:01:08,278 INFO L225 Difference]: With dead ends: 537 [2021-05-21 20:01:08,278 INFO L226 Difference]: Without dead ends: 418 [2021-05-21 20:01:08,279 INFO L777 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 [2021-05-21 20:01:08,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 418 states. [2021-05-21 20:01:08,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 418 to 403. [2021-05-21 20:01:08,282 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) [2021-05-21 20:01:08,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 403 states to 403 states and 952 transitions. [2021-05-21 20:01:08,282 INFO L78 Accepts]: Start accepts. Automaton has 403 states and 952 transitions. Word has length 26 [2021-05-21 20:01:08,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:01:08,282 INFO L482 AbstractCegarLoop]: Abstraction has 403 states and 952 transitions. [2021-05-21 20:01:08,282 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) [2021-05-21 20:01:08,283 INFO L276 IsEmpty]: Start isEmpty. Operand 403 states and 952 transitions. [2021-05-21 20:01:08,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 20:01:08,283 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:01:08,283 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:01:08,283 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable380 [2021-05-21 20:01:08,283 INFO L430 AbstractCegarLoop]: === Iteration 382 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 20:01:08,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:01:08,283 INFO L82 PathProgramCache]: Analyzing trace with hash -1455837904, now seen corresponding path program 380 times [2021-05-21 20:01:08,283 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:01:08,283 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [847496310] [2021-05-21 20:01:08,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:01:08,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:01:08,340 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:01:08,340 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:01:08,340 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [847496310] [2021-05-21 20:01:08,340 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [847496310] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:01:08,340 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:01:08,340 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-21 20:01:08,340 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1416148249] [2021-05-21 20:01:08,340 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:01:08,340 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:01:08,340 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:01:08,341 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:01:08,341 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) [2021-05-21 20:01:08,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:01:08,484 INFO L93 Difference]: Finished difference Result 526 states and 1249 transitions. [2021-05-21 20:01:08,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:01:08,484 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-05-21 20:01:08,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:01:08,484 INFO L225 Difference]: With dead ends: 526 [2021-05-21 20:01:08,484 INFO L226 Difference]: Without dead ends: 416 [2021-05-21 20:01:08,485 INFO L777 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 [2021-05-21 20:01:08,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 416 states. [2021-05-21 20:01:08,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 416 to 401. [2021-05-21 20:01:08,488 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) [2021-05-21 20:01:08,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 401 states to 401 states and 946 transitions. [2021-05-21 20:01:08,488 INFO L78 Accepts]: Start accepts. Automaton has 401 states and 946 transitions. Word has length 26 [2021-05-21 20:01:08,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:01:08,488 INFO L482 AbstractCegarLoop]: Abstraction has 401 states and 946 transitions. [2021-05-21 20:01:08,488 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:01:08,488 INFO L276 IsEmpty]: Start isEmpty. Operand 401 states and 946 transitions. [2021-05-21 20:01:08,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 20:01:08,489 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:01:08,489 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:01:08,489 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable381 [2021-05-21 20:01:08,489 INFO L430 AbstractCegarLoop]: === Iteration 383 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 20:01:08,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:01:08,489 INFO L82 PathProgramCache]: Analyzing trace with hash -2055104526, now seen corresponding path program 381 times [2021-05-21 20:01:08,489 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:01:08,489 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [954850032] [2021-05-21 20:01:08,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:01:08,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:01:08,545 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:01:08,545 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:01:08,545 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [954850032] [2021-05-21 20:01:08,545 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [954850032] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:01:08,545 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:01:08,545 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-21 20:01:08,545 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870363720] [2021-05-21 20:01:08,545 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:01:08,545 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:01:08,545 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:01:08,545 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:01:08,546 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) [2021-05-21 20:01:08,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:01:08,690 INFO L93 Difference]: Finished difference Result 506 states and 1204 transitions. [2021-05-21 20:01:08,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:01:08,690 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-05-21 20:01:08,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:01:08,690 INFO L225 Difference]: With dead ends: 506 [2021-05-21 20:01:08,690 INFO L226 Difference]: Without dead ends: 407 [2021-05-21 20:01:08,691 INFO L777 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 [2021-05-21 20:01:08,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 407 states. [2021-05-21 20:01:08,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 407 to 401. [2021-05-21 20:01:08,694 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) [2021-05-21 20:01:08,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 401 states to 401 states and 945 transitions. [2021-05-21 20:01:08,694 INFO L78 Accepts]: Start accepts. Automaton has 401 states and 945 transitions. Word has length 26 [2021-05-21 20:01:08,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:01:08,694 INFO L482 AbstractCegarLoop]: Abstraction has 401 states and 945 transitions. [2021-05-21 20:01:08,694 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:01:08,694 INFO L276 IsEmpty]: Start isEmpty. Operand 401 states and 945 transitions. [2021-05-21 20:01:08,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 20:01:08,695 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:01:08,695 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:01:08,695 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable382 [2021-05-21 20:01:08,695 INFO L430 AbstractCegarLoop]: === Iteration 384 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 20:01:08,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:01:08,695 INFO L82 PathProgramCache]: Analyzing trace with hash -542686380, now seen corresponding path program 382 times [2021-05-21 20:01:08,695 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:01:08,695 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1755152548] [2021-05-21 20:01:08,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:01:08,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:01:08,758 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:01:08,759 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:01:08,759 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1755152548] [2021-05-21 20:01:08,759 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1755152548] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:01:08,759 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:01:08,759 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-21 20:01:08,759 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1154585086] [2021-05-21 20:01:08,760 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:01:08,760 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:01:08,760 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:01:08,760 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:01:08,760 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) [2021-05-21 20:01:08,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:01:08,907 INFO L93 Difference]: Finished difference Result 513 states and 1227 transitions. [2021-05-21 20:01:08,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:01:08,908 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-05-21 20:01:08,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:01:08,908 INFO L225 Difference]: With dead ends: 513 [2021-05-21 20:01:08,908 INFO L226 Difference]: Without dead ends: 416 [2021-05-21 20:01:08,909 INFO L777 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 [2021-05-21 20:01:08,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 416 states. [2021-05-21 20:01:08,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 416 to 406. [2021-05-21 20:01:08,912 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) [2021-05-21 20:01:08,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 406 states to 406 states and 960 transitions. [2021-05-21 20:01:08,912 INFO L78 Accepts]: Start accepts. Automaton has 406 states and 960 transitions. Word has length 26 [2021-05-21 20:01:08,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:01:08,912 INFO L482 AbstractCegarLoop]: Abstraction has 406 states and 960 transitions. [2021-05-21 20:01:08,912 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) [2021-05-21 20:01:08,912 INFO L276 IsEmpty]: Start isEmpty. Operand 406 states and 960 transitions. [2021-05-21 20:01:08,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 20:01:08,913 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:01:08,913 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:01:08,913 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable383 [2021-05-21 20:01:08,913 INFO L430 AbstractCegarLoop]: === Iteration 385 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 20:01:08,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:01:08,913 INFO L82 PathProgramCache]: Analyzing trace with hash -1934830926, now seen corresponding path program 383 times [2021-05-21 20:01:08,913 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:01:08,913 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1503045373] [2021-05-21 20:01:08,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:01:08,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:01:08,967 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:01:08,968 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:01:08,968 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1503045373] [2021-05-21 20:01:08,968 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1503045373] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:01:08,968 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:01:08,968 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-21 20:01:08,968 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1952893755] [2021-05-21 20:01:08,968 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:01:08,968 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:01:08,968 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:01:08,969 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:01:08,969 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) [2021-05-21 20:01:09,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:01:09,109 INFO L93 Difference]: Finished difference Result 532 states and 1254 transitions. [2021-05-21 20:01:09,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:01:09,110 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-05-21 20:01:09,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:01:09,110 INFO L225 Difference]: With dead ends: 532 [2021-05-21 20:01:09,110 INFO L226 Difference]: Without dead ends: 430 [2021-05-21 20:01:09,110 INFO L777 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 [2021-05-21 20:01:09,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 430 states. [2021-05-21 20:01:09,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 430 to 416. [2021-05-21 20:01:09,114 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) [2021-05-21 20:01:09,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 416 states to 416 states and 974 transitions. [2021-05-21 20:01:09,114 INFO L78 Accepts]: Start accepts. Automaton has 416 states and 974 transitions. Word has length 26 [2021-05-21 20:01:09,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:01:09,114 INFO L482 AbstractCegarLoop]: Abstraction has 416 states and 974 transitions. [2021-05-21 20:01:09,114 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) [2021-05-21 20:01:09,115 INFO L276 IsEmpty]: Start isEmpty. Operand 416 states and 974 transitions. [2021-05-21 20:01:09,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 20:01:09,115 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:01:09,115 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:01:09,115 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable384 [2021-05-21 20:01:09,115 INFO L430 AbstractCegarLoop]: === Iteration 386 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 20:01:09,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:01:09,115 INFO L82 PathProgramCache]: Analyzing trace with hash -1603464470, now seen corresponding path program 384 times [2021-05-21 20:01:09,115 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:01:09,115 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1523287163] [2021-05-21 20:01:09,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:01:09,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:01:09,169 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:01:09,169 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:01:09,169 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1523287163] [2021-05-21 20:01:09,170 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1523287163] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:01:09,170 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:01:09,170 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-21 20:01:09,170 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [12049244] [2021-05-21 20:01:09,170 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:01:09,170 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:01:09,170 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:01:09,170 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:01:09,170 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) [2021-05-21 20:01:09,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:01:09,308 INFO L93 Difference]: Finished difference Result 513 states and 1207 transitions. [2021-05-21 20:01:09,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:01:09,308 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 [2021-05-21 20:01:09,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:01:09,308 INFO L225 Difference]: With dead ends: 513 [2021-05-21 20:01:09,308 INFO L226 Difference]: Without dead ends: 404 [2021-05-21 20:01:09,309 INFO L777 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 [2021-05-21 20:01:09,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 404 states. [2021-05-21 20:01:09,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 404 to 381. [2021-05-21 20:01:09,312 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) [2021-05-21 20:01:09,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 381 states to 381 states and 898 transitions. [2021-05-21 20:01:09,312 INFO L78 Accepts]: Start accepts. Automaton has 381 states and 898 transitions. Word has length 26 [2021-05-21 20:01:09,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:01:09,312 INFO L482 AbstractCegarLoop]: Abstraction has 381 states and 898 transitions. [2021-05-21 20:01:09,312 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:01:09,312 INFO L276 IsEmpty]: Start isEmpty. Operand 381 states and 898 transitions. [2021-05-21 20:01:09,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 20:01:09,313 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:01:09,313 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:01:09,313 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable385 [2021-05-21 20:01:09,313 INFO L430 AbstractCegarLoop]: === Iteration 387 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 20:01:09,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:01:09,313 INFO L82 PathProgramCache]: Analyzing trace with hash 1538144538, now seen corresponding path program 385 times [2021-05-21 20:01:09,313 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:01:09,313 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1477547788] [2021-05-21 20:01:09,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:01:09,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:01:09,366 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:01:09,366 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:01:09,366 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1477547788] [2021-05-21 20:01:09,366 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1477547788] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:01:09,366 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:01:09,366 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-21 20:01:09,366 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [607676476] [2021-05-21 20:01:09,366 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:01:09,366 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:01:09,366 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:01:09,366 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:01:09,366 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) [2021-05-21 20:01:09,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:01:09,502 INFO L93 Difference]: Finished difference Result 499 states and 1177 transitions. [2021-05-21 20:01:09,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:01:09,503 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 [2021-05-21 20:01:09,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:01:09,503 INFO L225 Difference]: With dead ends: 499 [2021-05-21 20:01:09,503 INFO L226 Difference]: Without dead ends: 381 [2021-05-21 20:01:09,503 INFO L777 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 [2021-05-21 20:01:09,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 381 states. [2021-05-21 20:01:09,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 381 to 381. [2021-05-21 20:01:09,506 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) [2021-05-21 20:01:09,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 381 states to 381 states and 886 transitions. [2021-05-21 20:01:09,507 INFO L78 Accepts]: Start accepts. Automaton has 381 states and 886 transitions. Word has length 26 [2021-05-21 20:01:09,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:01:09,507 INFO L482 AbstractCegarLoop]: Abstraction has 381 states and 886 transitions. [2021-05-21 20:01:09,507 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:01:09,507 INFO L276 IsEmpty]: Start isEmpty. Operand 381 states and 886 transitions. [2021-05-21 20:01:09,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 20:01:09,507 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:01:09,507 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:01:09,507 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable386 [2021-05-21 20:01:09,507 INFO L430 AbstractCegarLoop]: === Iteration 388 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 20:01:09,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:01:09,507 INFO L82 PathProgramCache]: Analyzing trace with hash 629893402, now seen corresponding path program 386 times [2021-05-21 20:01:09,507 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:01:09,507 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [624673637] [2021-05-21 20:01:09,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:01:09,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:01:09,561 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:01:09,561 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:01:09,561 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [624673637] [2021-05-21 20:01:09,561 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [624673637] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:01:09,561 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:01:09,561 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-21 20:01:09,561 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [809179292] [2021-05-21 20:01:09,561 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:01:09,561 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:01:09,561 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:01:09,561 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:01:09,562 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) [2021-05-21 20:01:09,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:01:09,696 INFO L93 Difference]: Finished difference Result 491 states and 1149 transitions. [2021-05-21 20:01:09,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:01:09,696 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-05-21 20:01:09,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:01:09,696 INFO L225 Difference]: With dead ends: 491 [2021-05-21 20:01:09,696 INFO L226 Difference]: Without dead ends: 384 [2021-05-21 20:01:09,697 INFO L777 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 [2021-05-21 20:01:09,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 384 states. [2021-05-21 20:01:09,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 384 to 381. [2021-05-21 20:01:09,699 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) [2021-05-21 20:01:09,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 381 states to 381 states and 884 transitions. [2021-05-21 20:01:09,700 INFO L78 Accepts]: Start accepts. Automaton has 381 states and 884 transitions. Word has length 26 [2021-05-21 20:01:09,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:01:09,700 INFO L482 AbstractCegarLoop]: Abstraction has 381 states and 884 transitions. [2021-05-21 20:01:09,700 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:01:09,700 INFO L276 IsEmpty]: Start isEmpty. Operand 381 states and 884 transitions. [2021-05-21 20:01:09,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 20:01:09,700 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:01:09,700 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:01:09,701 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable387 [2021-05-21 20:01:09,701 INFO L430 AbstractCegarLoop]: === Iteration 389 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 20:01:09,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:01:09,701 INFO L82 PathProgramCache]: Analyzing trace with hash 1550469368, now seen corresponding path program 387 times [2021-05-21 20:01:09,701 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:01:09,701 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [927161453] [2021-05-21 20:01:09,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:01:09,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:01:09,759 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:01:09,760 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:01:09,760 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [927161453] [2021-05-21 20:01:09,760 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [927161453] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:01:09,760 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:01:09,760 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-21 20:01:09,760 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [567025669] [2021-05-21 20:01:09,760 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:01:09,760 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:01:09,760 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:01:09,760 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:01:09,760 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) [2021-05-21 20:01:09,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:01:09,897 INFO L93 Difference]: Finished difference Result 484 states and 1132 transitions. [2021-05-21 20:01:09,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:01:09,897 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-05-21 20:01:09,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:01:09,897 INFO L225 Difference]: With dead ends: 484 [2021-05-21 20:01:09,897 INFO L226 Difference]: Without dead ends: 369 [2021-05-21 20:01:09,897 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 52.2ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:01:09,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 369 states. [2021-05-21 20:01:09,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 369 to 369. [2021-05-21 20:01:09,900 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) [2021-05-21 20:01:09,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 369 states to 369 states and 860 transitions. [2021-05-21 20:01:09,901 INFO L78 Accepts]: Start accepts. Automaton has 369 states and 860 transitions. Word has length 26 [2021-05-21 20:01:09,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:01:09,901 INFO L482 AbstractCegarLoop]: Abstraction has 369 states and 860 transitions. [2021-05-21 20:01:09,901 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:01:09,901 INFO L276 IsEmpty]: Start isEmpty. Operand 369 states and 860 transitions. [2021-05-21 20:01:09,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 20:01:09,901 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:01:09,901 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:01:09,901 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable388 [2021-05-21 20:01:09,901 INFO L430 AbstractCegarLoop]: === Iteration 390 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 20:01:09,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:01:09,902 INFO L82 PathProgramCache]: Analyzing trace with hash 924274646, now seen corresponding path program 388 times [2021-05-21 20:01:09,902 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:01:09,902 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1076691392] [2021-05-21 20:01:09,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:01:09,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:01:09,957 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:01:09,957 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:01:09,957 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1076691392] [2021-05-21 20:01:09,957 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1076691392] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:01:09,957 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:01:09,957 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-21 20:01:09,957 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1743804100] [2021-05-21 20:01:09,957 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:01:09,958 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:01:09,958 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:01:09,958 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:01:09,958 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) [2021-05-21 20:01:10,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:01:10,096 INFO L93 Difference]: Finished difference Result 497 states and 1163 transitions. [2021-05-21 20:01:10,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:01:10,096 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-05-21 20:01:10,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:01:10,096 INFO L225 Difference]: With dead ends: 497 [2021-05-21 20:01:10,096 INFO L226 Difference]: Without dead ends: 349 [2021-05-21 20:01:10,096 INFO L777 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 [2021-05-21 20:01:10,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 349 states. [2021-05-21 20:01:10,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 349 to 345. [2021-05-21 20:01:10,099 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) [2021-05-21 20:01:10,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 345 states to 345 states and 798 transitions. [2021-05-21 20:01:10,099 INFO L78 Accepts]: Start accepts. Automaton has 345 states and 798 transitions. Word has length 26 [2021-05-21 20:01:10,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:01:10,099 INFO L482 AbstractCegarLoop]: Abstraction has 345 states and 798 transitions. [2021-05-21 20:01:10,099 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:01:10,100 INFO L276 IsEmpty]: Start isEmpty. Operand 345 states and 798 transitions. [2021-05-21 20:01:10,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 20:01:10,100 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:01:10,100 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:01:10,100 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable389 [2021-05-21 20:01:10,100 INFO L430 AbstractCegarLoop]: === Iteration 391 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 20:01:10,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:01:10,100 INFO L82 PathProgramCache]: Analyzing trace with hash -1465978148, now seen corresponding path program 389 times [2021-05-21 20:01:10,100 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:01:10,100 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [57608809] [2021-05-21 20:01:10,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:01:10,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:01:10,153 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:01:10,153 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:01:10,153 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [57608809] [2021-05-21 20:01:10,153 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [57608809] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:01:10,153 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:01:10,153 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-21 20:01:10,153 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [150538659] [2021-05-21 20:01:10,153 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:01:10,154 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:01:10,154 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:01:10,154 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:01:10,154 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) [2021-05-21 20:01:10,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:01:10,287 INFO L93 Difference]: Finished difference Result 469 states and 1098 transitions. [2021-05-21 20:01:10,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:01:10,287 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-05-21 20:01:10,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:01:10,288 INFO L225 Difference]: With dead ends: 469 [2021-05-21 20:01:10,288 INFO L226 Difference]: Without dead ends: 357 [2021-05-21 20:01:10,288 INFO L777 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 [2021-05-21 20:01:10,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 357 states. [2021-05-21 20:01:10,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 357 to 357. [2021-05-21 20:01:10,290 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) [2021-05-21 20:01:10,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 357 states to 357 states and 822 transitions. [2021-05-21 20:01:10,291 INFO L78 Accepts]: Start accepts. Automaton has 357 states and 822 transitions. Word has length 26 [2021-05-21 20:01:10,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:01:10,291 INFO L482 AbstractCegarLoop]: Abstraction has 357 states and 822 transitions. [2021-05-21 20:01:10,291 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:01:10,291 INFO L276 IsEmpty]: Start isEmpty. Operand 357 states and 822 transitions. [2021-05-21 20:01:10,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 20:01:10,291 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:01:10,291 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:01:10,291 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable390 [2021-05-21 20:01:10,292 INFO L430 AbstractCegarLoop]: === Iteration 392 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 20:01:10,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:01:10,292 INFO L82 PathProgramCache]: Analyzing trace with hash 1041532148, now seen corresponding path program 390 times [2021-05-21 20:01:10,292 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:01:10,292 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [213276437] [2021-05-21 20:01:10,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:01:10,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:01:10,345 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:01:10,345 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:01:10,345 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [213276437] [2021-05-21 20:01:10,345 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [213276437] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:01:10,345 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:01:10,345 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-21 20:01:10,345 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2130235236] [2021-05-21 20:01:10,345 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:01:10,345 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:01:10,345 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:01:10,345 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:01:10,345 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) [2021-05-21 20:01:10,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:01:10,483 INFO L93 Difference]: Finished difference Result 474 states and 1113 transitions. [2021-05-21 20:01:10,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:01:10,484 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-05-21 20:01:10,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:01:10,484 INFO L225 Difference]: With dead ends: 474 [2021-05-21 20:01:10,484 INFO L226 Difference]: Without dead ends: 376 [2021-05-21 20:01:10,484 INFO L777 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 [2021-05-21 20:01:10,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 376 states. [2021-05-21 20:01:10,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 376 to 362. [2021-05-21 20:01:10,487 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) [2021-05-21 20:01:10,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 362 states to 362 states and 837 transitions. [2021-05-21 20:01:10,487 INFO L78 Accepts]: Start accepts. Automaton has 362 states and 837 transitions. Word has length 26 [2021-05-21 20:01:10,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:01:10,487 INFO L482 AbstractCegarLoop]: Abstraction has 362 states and 837 transitions. [2021-05-21 20:01:10,487 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) [2021-05-21 20:01:10,488 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states and 837 transitions. [2021-05-21 20:01:10,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 20:01:10,488 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:01:10,488 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:01:10,488 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable391 [2021-05-21 20:01:10,488 INFO L430 AbstractCegarLoop]: === Iteration 393 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 20:01:10,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:01:10,488 INFO L82 PathProgramCache]: Analyzing trace with hash -527396394, now seen corresponding path program 391 times [2021-05-21 20:01:10,488 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:01:10,488 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1873816899] [2021-05-21 20:01:10,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:01:10,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:01:10,542 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:01:10,542 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:01:10,542 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1873816899] [2021-05-21 20:01:10,542 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1873816899] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:01:10,542 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:01:10,542 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-21 20:01:10,542 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1949158647] [2021-05-21 20:01:10,542 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:01:10,542 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:01:10,543 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:01:10,543 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:01:10,543 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) [2021-05-21 20:01:10,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:01:10,675 INFO L93 Difference]: Finished difference Result 470 states and 1093 transitions. [2021-05-21 20:01:10,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:01:10,675 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-05-21 20:01:10,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:01:10,675 INFO L225 Difference]: With dead ends: 470 [2021-05-21 20:01:10,675 INFO L226 Difference]: Without dead ends: 364 [2021-05-21 20:01:10,675 INFO L777 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 [2021-05-21 20:01:10,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 364 states. [2021-05-21 20:01:10,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 364 to 345. [2021-05-21 20:01:10,678 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) [2021-05-21 20:01:10,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 345 states to 345 states and 793 transitions. [2021-05-21 20:01:10,679 INFO L78 Accepts]: Start accepts. Automaton has 345 states and 793 transitions. Word has length 26 [2021-05-21 20:01:10,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:01:10,679 INFO L482 AbstractCegarLoop]: Abstraction has 345 states and 793 transitions. [2021-05-21 20:01:10,679 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:01:10,679 INFO L276 IsEmpty]: Start isEmpty. Operand 345 states and 793 transitions. [2021-05-21 20:01:10,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 20:01:10,679 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:01:10,679 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:01:10,679 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable392 [2021-05-21 20:01:10,679 INFO L430 AbstractCegarLoop]: === Iteration 394 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 20:01:10,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:01:10,679 INFO L82 PathProgramCache]: Analyzing trace with hash -273711274, now seen corresponding path program 392 times [2021-05-21 20:01:10,679 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:01:10,680 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1358596679] [2021-05-21 20:01:10,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:01:10,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:01:10,734 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:01:10,735 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:01:10,735 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1358596679] [2021-05-21 20:01:10,735 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1358596679] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:01:10,735 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:01:10,735 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-21 20:01:10,735 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1969101073] [2021-05-21 20:01:10,735 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:01:10,735 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:01:10,735 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:01:10,735 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:01:10,735 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) [2021-05-21 20:01:10,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:01:10,866 INFO L93 Difference]: Finished difference Result 452 states and 1049 transitions. [2021-05-21 20:01:10,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:01:10,867 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 [2021-05-21 20:01:10,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:01:10,867 INFO L225 Difference]: With dead ends: 452 [2021-05-21 20:01:10,867 INFO L226 Difference]: Without dead ends: 346 [2021-05-21 20:01:10,867 INFO L777 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 [2021-05-21 20:01:10,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 346 states. [2021-05-21 20:01:10,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 346 to 341. [2021-05-21 20:01:10,870 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) [2021-05-21 20:01:10,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 341 states to 341 states and 784 transitions. [2021-05-21 20:01:10,870 INFO L78 Accepts]: Start accepts. Automaton has 341 states and 784 transitions. Word has length 26 [2021-05-21 20:01:10,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:01:10,870 INFO L482 AbstractCegarLoop]: Abstraction has 341 states and 784 transitions. [2021-05-21 20:01:10,870 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:01:10,871 INFO L276 IsEmpty]: Start isEmpty. Operand 341 states and 784 transitions. [2021-05-21 20:01:10,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 20:01:10,871 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:01:10,871 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:01:10,871 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable393 [2021-05-21 20:01:10,871 INFO L430 AbstractCegarLoop]: === Iteration 395 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 20:01:10,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:01:10,871 INFO L82 PathProgramCache]: Analyzing trace with hash -872977896, now seen corresponding path program 393 times [2021-05-21 20:01:10,871 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:01:10,871 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1666294802] [2021-05-21 20:01:10,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:01:10,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:01:10,925 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:01:10,925 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:01:10,925 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1666294802] [2021-05-21 20:01:10,925 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1666294802] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:01:10,925 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:01:10,926 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-21 20:01:10,926 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [344282017] [2021-05-21 20:01:10,926 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:01:10,926 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:01:10,926 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:01:10,926 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:01:10,926 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) [2021-05-21 20:01:11,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:01:11,059 INFO L93 Difference]: Finished difference Result 448 states and 1039 transitions. [2021-05-21 20:01:11,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:01:11,060 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-05-21 20:01:11,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:01:11,060 INFO L225 Difference]: With dead ends: 448 [2021-05-21 20:01:11,060 INFO L226 Difference]: Without dead ends: 348 [2021-05-21 20:01:11,060 INFO L777 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 [2021-05-21 20:01:11,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 348 states. [2021-05-21 20:01:11,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 348 to 344. [2021-05-21 20:01:11,063 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) [2021-05-21 20:01:11,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 344 states to 344 states and 788 transitions. [2021-05-21 20:01:11,063 INFO L78 Accepts]: Start accepts. Automaton has 344 states and 788 transitions. Word has length 26 [2021-05-21 20:01:11,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:01:11,063 INFO L482 AbstractCegarLoop]: Abstraction has 344 states and 788 transitions. [2021-05-21 20:01:11,063 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:01:11,063 INFO L276 IsEmpty]: Start isEmpty. Operand 344 states and 788 transitions. [2021-05-21 20:01:11,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 20:01:11,064 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:01:11,064 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:01:11,064 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable394 [2021-05-21 20:01:11,064 INFO L430 AbstractCegarLoop]: === Iteration 396 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 20:01:11,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:01:11,064 INFO L82 PathProgramCache]: Analyzing trace with hash -480519240, now seen corresponding path program 394 times [2021-05-21 20:01:11,064 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:01:11,064 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1954458327] [2021-05-21 20:01:11,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:01:11,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:01:11,118 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:01:11,118 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:01:11,118 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1954458327] [2021-05-21 20:01:11,118 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1954458327] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:01:11,118 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:01:11,118 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-21 20:01:11,118 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1972787562] [2021-05-21 20:01:11,119 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:01:11,119 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:01:11,119 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:01:11,119 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:01:11,119 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) [2021-05-21 20:01:11,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:01:11,265 INFO L93 Difference]: Finished difference Result 453 states and 1051 transitions. [2021-05-21 20:01:11,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:01:11,266 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-05-21 20:01:11,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:01:11,266 INFO L225 Difference]: With dead ends: 453 [2021-05-21 20:01:11,266 INFO L226 Difference]: Without dead ends: 352 [2021-05-21 20:01:11,266 INFO L777 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 [2021-05-21 20:01:11,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 352 states. [2021-05-21 20:01:11,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 352 to 345. [2021-05-21 20:01:11,269 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) [2021-05-21 20:01:11,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 345 states to 345 states and 789 transitions. [2021-05-21 20:01:11,269 INFO L78 Accepts]: Start accepts. Automaton has 345 states and 789 transitions. Word has length 26 [2021-05-21 20:01:11,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:01:11,269 INFO L482 AbstractCegarLoop]: Abstraction has 345 states and 789 transitions. [2021-05-21 20:01:11,269 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:01:11,269 INFO L276 IsEmpty]: Start isEmpty. Operand 345 states and 789 transitions. [2021-05-21 20:01:11,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 20:01:11,270 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:01:11,270 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:01:11,270 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable395 [2021-05-21 20:01:11,270 INFO L430 AbstractCegarLoop]: === Iteration 397 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 20:01:11,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:01:11,270 INFO L82 PathProgramCache]: Analyzing trace with hash -1985358058, now seen corresponding path program 395 times [2021-05-21 20:01:11,270 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:01:11,270 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [267100179] [2021-05-21 20:01:11,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:01:11,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:01:11,324 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:01:11,324 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:01:11,324 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [267100179] [2021-05-21 20:01:11,324 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [267100179] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:01:11,324 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:01:11,325 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-21 20:01:11,325 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1222896588] [2021-05-21 20:01:11,325 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:01:11,325 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:01:11,325 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:01:11,325 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:01:11,325 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) [2021-05-21 20:01:11,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:01:11,460 INFO L93 Difference]: Finished difference Result 452 states and 1045 transitions. [2021-05-21 20:01:11,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:01:11,460 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-05-21 20:01:11,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:01:11,461 INFO L225 Difference]: With dead ends: 452 [2021-05-21 20:01:11,461 INFO L226 Difference]: Without dead ends: 349 [2021-05-21 20:01:11,461 INFO L777 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 [2021-05-21 20:01:11,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 349 states. [2021-05-21 20:01:11,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 349 to 346. [2021-05-21 20:01:11,464 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) [2021-05-21 20:01:11,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 346 states to 346 states and 790 transitions. [2021-05-21 20:01:11,464 INFO L78 Accepts]: Start accepts. Automaton has 346 states and 790 transitions. Word has length 26 [2021-05-21 20:01:11,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:01:11,464 INFO L482 AbstractCegarLoop]: Abstraction has 346 states and 790 transitions. [2021-05-21 20:01:11,464 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) [2021-05-21 20:01:11,464 INFO L276 IsEmpty]: Start isEmpty. Operand 346 states and 790 transitions. [2021-05-21 20:01:11,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 20:01:11,465 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:01:11,465 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:01:11,465 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable396 [2021-05-21 20:01:11,465 INFO L430 AbstractCegarLoop]: === Iteration 398 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 20:01:11,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:01:11,465 INFO L82 PathProgramCache]: Analyzing trace with hash 639440250, now seen corresponding path program 396 times [2021-05-21 20:01:11,465 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:01:11,465 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [796144211] [2021-05-21 20:01:11,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:01:11,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:01:11,524 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:01:11,524 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:01:11,524 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [796144211] [2021-05-21 20:01:11,524 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [796144211] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:01:11,524 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:01:11,524 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-21 20:01:11,524 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1501012976] [2021-05-21 20:01:11,524 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:01:11,524 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:01:11,525 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:01:11,525 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:01:11,525 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) [2021-05-21 20:01:11,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:01:11,666 INFO L93 Difference]: Finished difference Result 456 states and 1063 transitions. [2021-05-21 20:01:11,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:01:11,666 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 [2021-05-21 20:01:11,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:01:11,666 INFO L225 Difference]: With dead ends: 456 [2021-05-21 20:01:11,667 INFO L226 Difference]: Without dead ends: 358 [2021-05-21 20:01:11,667 INFO L777 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 [2021-05-21 20:01:11,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 358 states. [2021-05-21 20:01:11,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 358 to 351. [2021-05-21 20:01:11,669 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) [2021-05-21 20:01:11,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 351 states to 351 states and 805 transitions. [2021-05-21 20:01:11,670 INFO L78 Accepts]: Start accepts. Automaton has 351 states and 805 transitions. Word has length 26 [2021-05-21 20:01:11,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:01:11,670 INFO L482 AbstractCegarLoop]: Abstraction has 351 states and 805 transitions. [2021-05-21 20:01:11,670 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:01:11,670 INFO L276 IsEmpty]: Start isEmpty. Operand 351 states and 805 transitions. [2021-05-21 20:01:11,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 20:01:11,670 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:01:11,670 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:01:11,670 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable397 [2021-05-21 20:01:11,670 INFO L430 AbstractCegarLoop]: === Iteration 399 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 20:01:11,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:01:11,671 INFO L82 PathProgramCache]: Analyzing trace with hash -752704296, now seen corresponding path program 397 times [2021-05-21 20:01:11,671 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:01:11,671 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1855684517] [2021-05-21 20:01:11,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:01:11,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:01:11,733 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:01:11,733 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:01:11,733 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1855684517] [2021-05-21 20:01:11,733 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1855684517] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:01:11,733 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:01:11,733 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-21 20:01:11,733 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1304449879] [2021-05-21 20:01:11,733 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:01:11,733 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:01:11,733 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:01:11,733 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:01:11,733 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) [2021-05-21 20:01:11,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:01:11,873 INFO L93 Difference]: Finished difference Result 456 states and 1056 transitions. [2021-05-21 20:01:11,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:01:11,873 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-05-21 20:01:11,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:01:11,874 INFO L225 Difference]: With dead ends: 456 [2021-05-21 20:01:11,874 INFO L226 Difference]: Without dead ends: 351 [2021-05-21 20:01:11,874 INFO L777 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 [2021-05-21 20:01:11,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 351 states. [2021-05-21 20:01:11,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 351 to 339. [2021-05-21 20:01:11,876 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) [2021-05-21 20:01:11,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 339 states to 339 states and 777 transitions. [2021-05-21 20:01:11,877 INFO L78 Accepts]: Start accepts. Automaton has 339 states and 777 transitions. Word has length 26 [2021-05-21 20:01:11,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:01:11,877 INFO L482 AbstractCegarLoop]: Abstraction has 339 states and 777 transitions. [2021-05-21 20:01:11,877 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) [2021-05-21 20:01:11,877 INFO L276 IsEmpty]: Start isEmpty. Operand 339 states and 777 transitions. [2021-05-21 20:01:11,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 20:01:11,877 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:01:11,877 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:01:11,877 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable398 [2021-05-21 20:01:11,877 INFO L430 AbstractCegarLoop]: === Iteration 400 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 20:01:11,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:01:11,878 INFO L82 PathProgramCache]: Analyzing trace with hash 1846084458, now seen corresponding path program 398 times [2021-05-21 20:01:11,878 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:01:11,878 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [224915484] [2021-05-21 20:01:11,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:01:11,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:01:11,944 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:01:11,944 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:01:11,944 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [224915484] [2021-05-21 20:01:11,944 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [224915484] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:01:11,944 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:01:11,944 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-21 20:01:11,944 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1600922976] [2021-05-21 20:01:11,944 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:01:11,944 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:01:11,944 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:01:11,944 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:01:11,945 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) [2021-05-21 20:01:12,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:01:12,071 INFO L93 Difference]: Finished difference Result 462 states and 1071 transitions. [2021-05-21 20:01:12,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:01:12,071 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-05-21 20:01:12,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:01:12,071 INFO L225 Difference]: With dead ends: 462 [2021-05-21 20:01:12,071 INFO L226 Difference]: Without dead ends: 311 [2021-05-21 20:01:12,071 INFO L777 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 [2021-05-21 20:01:12,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 311 states. [2021-05-21 20:01:12,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 311 to 311. [2021-05-21 20:01:12,074 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) [2021-05-21 20:01:12,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 311 states to 311 states and 705 transitions. [2021-05-21 20:01:12,074 INFO L78 Accepts]: Start accepts. Automaton has 311 states and 705 transitions. Word has length 26 [2021-05-21 20:01:12,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:01:12,074 INFO L482 AbstractCegarLoop]: Abstraction has 311 states and 705 transitions. [2021-05-21 20:01:12,074 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:01:12,074 INFO L276 IsEmpty]: Start isEmpty. Operand 311 states and 705 transitions. [2021-05-21 20:01:12,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 20:01:12,075 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:01:12,075 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:01:12,075 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable399 [2021-05-21 20:01:12,075 INFO L430 AbstractCegarLoop]: === Iteration 401 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 20:01:12,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:01:12,075 INFO L82 PathProgramCache]: Analyzing trace with hash 58627458, now seen corresponding path program 399 times [2021-05-21 20:01:12,075 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:01:12,075 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1336491206] [2021-05-21 20:01:12,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:01:12,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:01:12,132 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:01:12,132 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:01:12,132 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1336491206] [2021-05-21 20:01:12,132 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1336491206] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:01:12,132 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:01:12,132 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-21 20:01:12,132 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [949432555] [2021-05-21 20:01:12,132 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:01:12,132 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:01:12,132 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:01:12,133 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:01:12,133 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) [2021-05-21 20:01:12,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:01:12,266 INFO L93 Difference]: Finished difference Result 447 states and 1032 transitions. [2021-05-21 20:01:12,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:01:12,266 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-05-21 20:01:12,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:01:12,266 INFO L225 Difference]: With dead ends: 447 [2021-05-21 20:01:12,266 INFO L226 Difference]: Without dead ends: 326 [2021-05-21 20:01:12,266 INFO L777 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 [2021-05-21 20:01:12,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 326 states. [2021-05-21 20:01:12,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 326 to 326. [2021-05-21 20:01:12,269 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) [2021-05-21 20:01:12,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 326 states to 326 states and 732 transitions. [2021-05-21 20:01:12,270 INFO L78 Accepts]: Start accepts. Automaton has 326 states and 732 transitions. Word has length 26 [2021-05-21 20:01:12,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:01:12,270 INFO L482 AbstractCegarLoop]: Abstraction has 326 states and 732 transitions. [2021-05-21 20:01:12,270 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:01:12,270 INFO L276 IsEmpty]: Start isEmpty. Operand 326 states and 732 transitions. [2021-05-21 20:01:12,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 20:01:12,270 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:01:12,270 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:01:12,270 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable400 [2021-05-21 20:01:12,270 INFO L430 AbstractCegarLoop]: === Iteration 402 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 20:01:12,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:01:12,270 INFO L82 PathProgramCache]: Analyzing trace with hash -1510301084, now seen corresponding path program 400 times [2021-05-21 20:01:12,270 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:01:12,271 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [912697382] [2021-05-21 20:01:12,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:01:12,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:01:12,341 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:01:12,342 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:01:12,342 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [912697382] [2021-05-21 20:01:12,342 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [912697382] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:01:12,342 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:01:12,342 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-21 20:01:12,342 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2008909241] [2021-05-21 20:01:12,342 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:01:12,342 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:01:12,342 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:01:12,342 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:01:12,342 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) [2021-05-21 20:01:12,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:01:12,464 INFO L93 Difference]: Finished difference Result 451 states and 1024 transitions. [2021-05-21 20:01:12,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:01:12,465 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-05-21 20:01:12,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:01:12,465 INFO L225 Difference]: With dead ends: 451 [2021-05-21 20:01:12,465 INFO L226 Difference]: Without dead ends: 322 [2021-05-21 20:01:12,465 INFO L777 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 [2021-05-21 20:01:12,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 322 states. [2021-05-21 20:01:12,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 322 to 314. [2021-05-21 20:01:12,467 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) [2021-05-21 20:01:12,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 314 states to 314 states and 701 transitions. [2021-05-21 20:01:12,468 INFO L78 Accepts]: Start accepts. Automaton has 314 states and 701 transitions. Word has length 26 [2021-05-21 20:01:12,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:01:12,468 INFO L482 AbstractCegarLoop]: Abstraction has 314 states and 701 transitions. [2021-05-21 20:01:12,468 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) [2021-05-21 20:01:12,468 INFO L276 IsEmpty]: Start isEmpty. Operand 314 states and 701 transitions. [2021-05-21 20:01:12,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 20:01:12,468 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:01:12,468 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:01:12,468 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable401 [2021-05-21 20:01:12,468 INFO L430 AbstractCegarLoop]: === Iteration 403 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 20:01:12,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:01:12,469 INFO L82 PathProgramCache]: Analyzing trace with hash -1667639142, now seen corresponding path program 401 times [2021-05-21 20:01:12,469 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:01:12,469 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1709290936] [2021-05-21 20:01:12,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:01:12,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:01:12,522 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:01:12,523 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:01:12,523 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1709290936] [2021-05-21 20:01:12,523 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1709290936] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:01:12,523 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:01:12,523 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-21 20:01:12,523 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1062265376] [2021-05-21 20:01:12,523 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:01:12,523 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:01:12,523 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:01:12,523 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:01:12,523 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) [2021-05-21 20:01:12,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:01:12,642 INFO L93 Difference]: Finished difference Result 411 states and 939 transitions. [2021-05-21 20:01:12,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:01:12,642 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-05-21 20:01:12,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:01:12,643 INFO L225 Difference]: With dead ends: 411 [2021-05-21 20:01:12,643 INFO L226 Difference]: Without dead ends: 282 [2021-05-21 20:01:12,643 INFO L777 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 [2021-05-21 20:01:12,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2021-05-21 20:01:12,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 273. [2021-05-21 20:01:12,645 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) [2021-05-21 20:01:12,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273 states to 273 states and 610 transitions. [2021-05-21 20:01:12,645 INFO L78 Accepts]: Start accepts. Automaton has 273 states and 610 transitions. Word has length 26 [2021-05-21 20:01:12,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:01:12,645 INFO L482 AbstractCegarLoop]: Abstraction has 273 states and 610 transitions. [2021-05-21 20:01:12,645 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:01:12,645 INFO L276 IsEmpty]: Start isEmpty. Operand 273 states and 610 transitions. [2021-05-21 20:01:12,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 20:01:12,646 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:01:12,646 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:01:12,646 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable402 [2021-05-21 20:01:12,646 INFO L430 AbstractCegarLoop]: === Iteration 404 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 20:01:12,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:01:12,646 INFO L82 PathProgramCache]: Analyzing trace with hash 1477860122, now seen corresponding path program 402 times [2021-05-21 20:01:12,646 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:01:12,646 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [559077807] [2021-05-21 20:01:12,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:01:12,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:01:12,711 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:01:12,711 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:01:12,711 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [559077807] [2021-05-21 20:01:12,711 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [559077807] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:01:12,711 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:01:12,712 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-21 20:01:12,712 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [614876744] [2021-05-21 20:01:12,712 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:01:12,712 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:01:12,712 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:01:12,712 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:01:12,712 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) [2021-05-21 20:01:12,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:01:12,842 INFO L93 Difference]: Finished difference Result 364 states and 835 transitions. [2021-05-21 20:01:12,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:01:12,842 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-05-21 20:01:12,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:01:12,843 INFO L225 Difference]: With dead ends: 364 [2021-05-21 20:01:12,843 INFO L226 Difference]: Without dead ends: 253 [2021-05-21 20:01:12,843 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 55.1ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:01:12,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2021-05-21 20:01:12,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 244. [2021-05-21 20:01:12,845 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) [2021-05-21 20:01:12,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 553 transitions. [2021-05-21 20:01:12,845 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 553 transitions. Word has length 26 [2021-05-21 20:01:12,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:01:12,845 INFO L482 AbstractCegarLoop]: Abstraction has 244 states and 553 transitions. [2021-05-21 20:01:12,845 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:01:12,845 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 553 transitions. [2021-05-21 20:01:12,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 20:01:12,846 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:01:12,846 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:01:12,846 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable403 [2021-05-21 20:01:12,846 INFO L430 AbstractCegarLoop]: === Iteration 405 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 20:01:12,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:01:12,846 INFO L82 PathProgramCache]: Analyzing trace with hash -26978696, now seen corresponding path program 403 times [2021-05-21 20:01:12,846 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:01:12,846 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [293175937] [2021-05-21 20:01:12,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:01:12,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:01:12,899 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:01:12,899 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:01:12,899 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [293175937] [2021-05-21 20:01:12,899 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [293175937] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:01:12,900 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:01:12,900 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-21 20:01:12,900 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [276957695] [2021-05-21 20:01:12,900 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:01:12,900 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:01:12,900 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:01:12,900 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:01:12,900 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) [2021-05-21 20:01:13,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:01:13,031 INFO L93 Difference]: Finished difference Result 350 states and 808 transitions. [2021-05-21 20:01:13,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:01:13,031 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-05-21 20:01:13,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:01:13,032 INFO L225 Difference]: With dead ends: 350 [2021-05-21 20:01:13,032 INFO L226 Difference]: Without dead ends: 250 [2021-05-21 20:01:13,032 INFO L777 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 [2021-05-21 20:01:13,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2021-05-21 20:01:13,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 244. [2021-05-21 20:01:13,034 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) [2021-05-21 20:01:13,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 552 transitions. [2021-05-21 20:01:13,034 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 552 transitions. Word has length 26 [2021-05-21 20:01:13,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:01:13,034 INFO L482 AbstractCegarLoop]: Abstraction has 244 states and 552 transitions. [2021-05-21 20:01:13,034 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:01:13,034 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 552 transitions. [2021-05-21 20:01:13,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 20:01:13,034 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:01:13,035 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:01:13,035 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable404 [2021-05-21 20:01:13,035 INFO L430 AbstractCegarLoop]: === Iteration 406 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 20:01:13,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:01:13,035 INFO L82 PathProgramCache]: Analyzing trace with hash -1697147684, now seen corresponding path program 404 times [2021-05-21 20:01:13,035 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:01:13,035 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1974077012] [2021-05-21 20:01:13,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:01:13,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:01:13,092 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:01:13,092 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:01:13,092 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1974077012] [2021-05-21 20:01:13,092 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1974077012] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:01:13,092 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:01:13,092 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-21 20:01:13,092 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1684484974] [2021-05-21 20:01:13,092 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:01:13,092 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:01:13,092 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:01:13,092 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:01:13,093 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) [2021-05-21 20:01:13,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:01:13,233 INFO L93 Difference]: Finished difference Result 360 states and 826 transitions. [2021-05-21 20:01:13,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:01:13,234 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-05-21 20:01:13,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:01:13,234 INFO L225 Difference]: With dead ends: 360 [2021-05-21 20:01:13,234 INFO L226 Difference]: Without dead ends: 265 [2021-05-21 20:01:13,234 INFO L777 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 [2021-05-21 20:01:13,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265 states. [2021-05-21 20:01:13,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265 to 259. [2021-05-21 20:01:13,236 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) [2021-05-21 20:01:13,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 579 transitions. [2021-05-21 20:01:13,237 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 579 transitions. Word has length 26 [2021-05-21 20:01:13,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:01:13,237 INFO L482 AbstractCegarLoop]: Abstraction has 259 states and 579 transitions. [2021-05-21 20:01:13,237 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:01:13,237 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 579 transitions. [2021-05-21 20:01:13,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 20:01:13,237 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:01:13,237 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:01:13,237 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable405 [2021-05-21 20:01:13,237 INFO L430 AbstractCegarLoop]: === Iteration 407 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 20:01:13,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:01:13,237 INFO L82 PathProgramCache]: Analyzing trace with hash 1205675066, now seen corresponding path program 405 times [2021-05-21 20:01:13,237 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:01:13,237 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1049043677] [2021-05-21 20:01:13,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:01:13,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:01:13,290 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:01:13,291 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:01:13,291 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1049043677] [2021-05-21 20:01:13,291 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1049043677] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:01:13,291 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:01:13,291 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-21 20:01:13,291 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [636233372] [2021-05-21 20:01:13,291 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:01:13,291 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:01:13,291 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:01:13,291 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:01:13,291 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) [2021-05-21 20:01:13,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:01:13,418 INFO L93 Difference]: Finished difference Result 368 states and 838 transitions. [2021-05-21 20:01:13,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:01:13,419 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-05-21 20:01:13,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:01:13,419 INFO L225 Difference]: With dead ends: 368 [2021-05-21 20:01:13,419 INFO L226 Difference]: Without dead ends: 268 [2021-05-21 20:01:13,419 INFO L777 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 [2021-05-21 20:01:13,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 268 states. [2021-05-21 20:01:13,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 268 to 257. [2021-05-21 20:01:13,421 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) [2021-05-21 20:01:13,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 575 transitions. [2021-05-21 20:01:13,422 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 575 transitions. Word has length 26 [2021-05-21 20:01:13,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:01:13,422 INFO L482 AbstractCegarLoop]: Abstraction has 257 states and 575 transitions. [2021-05-21 20:01:13,422 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:01:13,422 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 575 transitions. [2021-05-21 20:01:13,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 20:01:13,422 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:01:13,422 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:01:13,422 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable406 [2021-05-21 20:01:13,422 INFO L430 AbstractCegarLoop]: === Iteration 408 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 20:01:13,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:01:13,422 INFO L82 PathProgramCache]: Analyzing trace with hash -1087756786, now seen corresponding path program 406 times [2021-05-21 20:01:13,422 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:01:13,422 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1390124749] [2021-05-21 20:01:13,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:01:13,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:01:13,475 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:01:13,476 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:01:13,476 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1390124749] [2021-05-21 20:01:13,476 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1390124749] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:01:13,476 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:01:13,476 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-21 20:01:13,476 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [143851529] [2021-05-21 20:01:13,476 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:01:13,476 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:01:13,476 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:01:13,476 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:01:13,476 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) [2021-05-21 20:01:13,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:01:13,599 INFO L93 Difference]: Finished difference Result 366 states and 838 transitions. [2021-05-21 20:01:13,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:01:13,600 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-05-21 20:01:13,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:01:13,600 INFO L225 Difference]: With dead ends: 366 [2021-05-21 20:01:13,600 INFO L226 Difference]: Without dead ends: 247 [2021-05-21 20:01:13,600 INFO L777 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 [2021-05-21 20:01:13,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247 states. [2021-05-21 20:01:13,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247 to 247. [2021-05-21 20:01:13,602 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) [2021-05-21 20:01:13,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247 states to 247 states and 553 transitions. [2021-05-21 20:01:13,602 INFO L78 Accepts]: Start accepts. Automaton has 247 states and 553 transitions. Word has length 26 [2021-05-21 20:01:13,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:01:13,602 INFO L482 AbstractCegarLoop]: Abstraction has 247 states and 553 transitions. [2021-05-21 20:01:13,602 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:01:13,602 INFO L276 IsEmpty]: Start isEmpty. Operand 247 states and 553 transitions. [2021-05-21 20:01:13,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 20:01:13,603 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:01:13,603 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:01:13,603 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable407 [2021-05-21 20:01:13,603 INFO L430 AbstractCegarLoop]: === Iteration 409 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 20:01:13,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:01:13,603 INFO L82 PathProgramCache]: Analyzing trace with hash -703725496, now seen corresponding path program 407 times [2021-05-21 20:01:13,603 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:01:13,603 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1976054990] [2021-05-21 20:01:13,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:01:13,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:01:13,667 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:01:13,667 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:01:13,667 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1976054990] [2021-05-21 20:01:13,667 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1976054990] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:01:13,667 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:01:13,667 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-21 20:01:13,667 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1997365266] [2021-05-21 20:01:13,667 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:01:13,667 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:01:13,667 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:01:13,667 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:01:13,668 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) [2021-05-21 20:01:13,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:01:13,791 INFO L93 Difference]: Finished difference Result 339 states and 779 transitions. [2021-05-21 20:01:13,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:01:13,791 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-05-21 20:01:13,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:01:13,791 INFO L225 Difference]: With dead ends: 339 [2021-05-21 20:01:13,791 INFO L226 Difference]: Without dead ends: 230 [2021-05-21 20:01:13,792 INFO L777 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 [2021-05-21 20:01:13,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2021-05-21 20:01:13,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 217. [2021-05-21 20:01:13,793 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) [2021-05-21 20:01:13,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 493 transitions. [2021-05-21 20:01:13,794 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 493 transitions. Word has length 26 [2021-05-21 20:01:13,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:01:13,794 INFO L482 AbstractCegarLoop]: Abstraction has 217 states and 493 transitions. [2021-05-21 20:01:13,794 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) [2021-05-21 20:01:13,794 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 493 transitions. [2021-05-21 20:01:13,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 20:01:13,794 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:01:13,794 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:01:13,794 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable408 [2021-05-21 20:01:13,794 INFO L430 AbstractCegarLoop]: === Iteration 410 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 20:01:13,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:01:13,794 INFO L82 PathProgramCache]: Analyzing trace with hash -1474886448, now seen corresponding path program 408 times [2021-05-21 20:01:13,795 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:01:13,795 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [923295537] [2021-05-21 20:01:13,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:01:13,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:01:13,849 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:01:13,849 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:01:13,849 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [923295537] [2021-05-21 20:01:13,849 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [923295537] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:01:13,849 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:01:13,849 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-21 20:01:13,849 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1583516229] [2021-05-21 20:01:13,850 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:01:13,850 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:01:13,850 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:01:13,850 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:01:13,850 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) [2021-05-21 20:01:13,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:01:13,971 INFO L93 Difference]: Finished difference Result 318 states and 736 transitions. [2021-05-21 20:01:13,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:01:13,971 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 [2021-05-21 20:01:13,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:01:13,971 INFO L225 Difference]: With dead ends: 318 [2021-05-21 20:01:13,971 INFO L226 Difference]: Without dead ends: 213 [2021-05-21 20:01:13,972 INFO L777 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 [2021-05-21 20:01:13,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2021-05-21 20:01:13,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 213. [2021-05-21 20:01:13,973 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) [2021-05-21 20:01:13,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 485 transitions. [2021-05-21 20:01:13,974 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 485 transitions. Word has length 26 [2021-05-21 20:01:13,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:01:13,974 INFO L482 AbstractCegarLoop]: Abstraction has 213 states and 485 transitions. [2021-05-21 20:01:13,974 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:01:13,974 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 485 transitions. [2021-05-21 20:01:13,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 20:01:13,974 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:01:13,974 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:01:13,974 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable409 [2021-05-21 20:01:13,974 INFO L430 AbstractCegarLoop]: === Iteration 411 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 20:01:13,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:01:13,974 INFO L82 PathProgramCache]: Analyzing trace with hash 1707700686, now seen corresponding path program 409 times [2021-05-21 20:01:13,974 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:01:13,974 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [238473331] [2021-05-21 20:01:13,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:01:13,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:01:14,023 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:01:14,023 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:01:14,023 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [238473331] [2021-05-21 20:01:14,023 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [238473331] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:01:14,023 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:01:14,023 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:01:14,023 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [503382087] [2021-05-21 20:01:14,023 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-21 20:01:14,023 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:01:14,024 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-21 20:01:14,024 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-05-21 20:01:14,024 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) [2021-05-21 20:01:14,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:01:14,120 INFO L93 Difference]: Finished difference Result 318 states and 737 transitions. [2021-05-21 20:01:14,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-21 20:01:14,121 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 [2021-05-21 20:01:14,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:01:14,121 INFO L225 Difference]: With dead ends: 318 [2021-05-21 20:01:14,121 INFO L226 Difference]: Without dead ends: 215 [2021-05-21 20:01:14,121 INFO L777 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 [2021-05-21 20:01:14,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2021-05-21 20:01:14,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 215. [2021-05-21 20:01:14,123 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) [2021-05-21 20:01:14,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 487 transitions. [2021-05-21 20:01:14,123 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 487 transitions. Word has length 26 [2021-05-21 20:01:14,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:01:14,123 INFO L482 AbstractCegarLoop]: Abstraction has 215 states and 487 transitions. [2021-05-21 20:01:14,123 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) [2021-05-21 20:01:14,123 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 487 transitions. [2021-05-21 20:01:14,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 20:01:14,124 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:01:14,124 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:01:14,124 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable410 [2021-05-21 20:01:14,124 INFO L430 AbstractCegarLoop]: === Iteration 412 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 20:01:14,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:01:14,124 INFO L82 PathProgramCache]: Analyzing trace with hash 37531698, now seen corresponding path program 410 times [2021-05-21 20:01:14,124 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:01:14,124 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1016709755] [2021-05-21 20:01:14,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:01:14,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:01:14,177 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:01:14,177 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:01:14,177 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1016709755] [2021-05-21 20:01:14,177 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1016709755] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:01:14,177 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:01:14,177 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-21 20:01:14,177 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1360905299] [2021-05-21 20:01:14,177 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:01:14,177 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:01:14,177 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:01:14,178 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:01:14,178 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) [2021-05-21 20:01:14,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:01:14,301 INFO L93 Difference]: Finished difference Result 325 states and 750 transitions. [2021-05-21 20:01:14,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:01:14,302 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 [2021-05-21 20:01:14,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:01:14,302 INFO L225 Difference]: With dead ends: 325 [2021-05-21 20:01:14,302 INFO L226 Difference]: Without dead ends: 227 [2021-05-21 20:01:14,302 INFO L777 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 [2021-05-21 20:01:14,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2021-05-21 20:01:14,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 220. [2021-05-21 20:01:14,304 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) [2021-05-21 20:01:14,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 499 transitions. [2021-05-21 20:01:14,304 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 499 transitions. Word has length 26 [2021-05-21 20:01:14,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:01:14,304 INFO L482 AbstractCegarLoop]: Abstraction has 220 states and 499 transitions. [2021-05-21 20:01:14,304 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:01:14,304 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 499 transitions. [2021-05-21 20:01:14,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 20:01:14,305 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:01:14,305 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:01:14,305 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable411 [2021-05-21 20:01:14,305 INFO L430 AbstractCegarLoop]: === Iteration 413 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 20:01:14,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:01:14,305 INFO L82 PathProgramCache]: Analyzing trace with hash -1354612848, now seen corresponding path program 411 times [2021-05-21 20:01:14,305 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:01:14,305 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1381470366] [2021-05-21 20:01:14,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:01:14,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:01:14,360 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:01:14,361 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:01:14,361 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1381470366] [2021-05-21 20:01:14,361 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1381470366] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:01:14,361 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:01:14,361 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-21 20:01:14,361 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [45533224] [2021-05-21 20:01:14,361 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:01:14,361 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:01:14,361 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:01:14,361 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:01:14,361 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) [2021-05-21 20:01:14,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:01:14,479 INFO L93 Difference]: Finished difference Result 331 states and 761 transitions. [2021-05-21 20:01:14,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:01:14,479 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 [2021-05-21 20:01:14,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:01:14,480 INFO L225 Difference]: With dead ends: 331 [2021-05-21 20:01:14,480 INFO L226 Difference]: Without dead ends: 220 [2021-05-21 20:01:14,480 INFO L777 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 [2021-05-21 20:01:14,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2021-05-21 20:01:14,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 218. [2021-05-21 20:01:14,481 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) [2021-05-21 20:01:14,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 492 transitions. [2021-05-21 20:01:14,482 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 492 transitions. Word has length 26 [2021-05-21 20:01:14,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:01:14,482 INFO L482 AbstractCegarLoop]: Abstraction has 218 states and 492 transitions. [2021-05-21 20:01:14,482 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:01:14,482 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 492 transitions. [2021-05-21 20:01:14,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 20:01:14,482 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:01:14,482 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:01:14,482 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable412 [2021-05-21 20:01:14,482 INFO L430 AbstractCegarLoop]: === Iteration 414 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 20:01:14,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:01:14,482 INFO L82 PathProgramCache]: Analyzing trace with hash -1023246392, now seen corresponding path program 412 times [2021-05-21 20:01:14,483 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:01:14,483 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1151222098] [2021-05-21 20:01:14,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:01:14,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:01:14,535 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:01:14,535 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:01:14,535 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1151222098] [2021-05-21 20:01:14,535 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1151222098] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:01:14,535 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:01:14,535 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-21 20:01:14,536 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [417439772] [2021-05-21 20:01:14,536 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:01:14,536 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:01:14,536 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:01:14,536 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:01:14,536 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) [2021-05-21 20:01:14,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:01:14,648 INFO L93 Difference]: Finished difference Result 313 states and 725 transitions. [2021-05-21 20:01:14,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:01:14,648 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-05-21 20:01:14,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:01:14,649 INFO L225 Difference]: With dead ends: 313 [2021-05-21 20:01:14,649 INFO L226 Difference]: Without dead ends: 199 [2021-05-21 20:01:14,649 INFO L777 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 [2021-05-21 20:01:14,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2021-05-21 20:01:14,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 196. [2021-05-21 20:01:14,650 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) [2021-05-21 20:01:14,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 451 transitions. [2021-05-21 20:01:14,651 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 451 transitions. Word has length 26 [2021-05-21 20:01:14,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:01:14,651 INFO L482 AbstractCegarLoop]: Abstraction has 196 states and 451 transitions. [2021-05-21 20:01:14,651 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:01:14,651 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 451 transitions. [2021-05-21 20:01:14,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 20:01:14,651 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:01:14,651 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:01:14,651 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable413 [2021-05-21 20:01:14,651 INFO L430 AbstractCegarLoop]: === Iteration 415 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 20:01:14,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:01:14,651 INFO L82 PathProgramCache]: Analyzing trace with hash 1170207830, now seen corresponding path program 413 times [2021-05-21 20:01:14,651 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:01:14,651 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1288939802] [2021-05-21 20:01:14,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:01:14,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:01:14,704 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:01:14,704 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:01:14,704 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1288939802] [2021-05-21 20:01:14,704 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1288939802] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:01:14,705 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:01:14,705 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-21 20:01:14,705 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2140685110] [2021-05-21 20:01:14,705 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:01:14,705 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:01:14,705 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:01:14,705 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:01:14,705 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) [2021-05-21 20:01:14,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:01:14,815 INFO L93 Difference]: Finished difference Result 296 states and 693 transitions. [2021-05-21 20:01:14,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:01:14,815 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-05-21 20:01:14,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:01:14,815 INFO L225 Difference]: With dead ends: 296 [2021-05-21 20:01:14,815 INFO L226 Difference]: Without dead ends: 191 [2021-05-21 20:01:14,815 INFO L777 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 [2021-05-21 20:01:14,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2021-05-21 20:01:14,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 191. [2021-05-21 20:01:14,817 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) [2021-05-21 20:01:14,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 441 transitions. [2021-05-21 20:01:14,817 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 441 transitions. Word has length 26 [2021-05-21 20:01:14,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:01:14,817 INFO L482 AbstractCegarLoop]: Abstraction has 191 states and 441 transitions. [2021-05-21 20:01:14,817 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) [2021-05-21 20:01:14,817 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 441 transitions. [2021-05-21 20:01:14,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 20:01:14,817 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:01:14,817 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:01:14,818 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable414 [2021-05-21 20:01:14,818 INFO L430 AbstractCegarLoop]: === Iteration 416 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 20:01:14,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:01:14,818 INFO L82 PathProgramCache]: Analyzing trace with hash -499961158, now seen corresponding path program 414 times [2021-05-21 20:01:14,818 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:01:14,818 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1506810276] [2021-05-21 20:01:14,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:01:14,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:01:14,876 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:01:14,876 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:01:14,876 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1506810276] [2021-05-21 20:01:14,876 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1506810276] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:01:14,876 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:01:14,876 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-21 20:01:14,876 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [752923321] [2021-05-21 20:01:14,876 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:01:14,876 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:01:14,876 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:01:14,876 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:01:14,877 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) [2021-05-21 20:01:14,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:01:14,988 INFO L93 Difference]: Finished difference Result 294 states and 685 transitions. [2021-05-21 20:01:14,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:01:14,988 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-05-21 20:01:14,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:01:14,988 INFO L225 Difference]: With dead ends: 294 [2021-05-21 20:01:14,989 INFO L226 Difference]: Without dead ends: 181 [2021-05-21 20:01:14,989 INFO L777 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 [2021-05-21 20:01:14,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2021-05-21 20:01:14,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 181. [2021-05-21 20:01:14,990 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) [2021-05-21 20:01:14,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 415 transitions. [2021-05-21 20:01:14,990 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 415 transitions. Word has length 26 [2021-05-21 20:01:14,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:01:14,990 INFO L482 AbstractCegarLoop]: Abstraction has 181 states and 415 transitions. [2021-05-21 20:01:14,991 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:01:14,991 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 415 transitions. [2021-05-21 20:01:14,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 20:01:14,991 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:01:14,991 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:01:14,991 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable415 [2021-05-21 20:01:14,991 INFO L430 AbstractCegarLoop]: === Iteration 417 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 20:01:14,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:01:14,991 INFO L82 PathProgramCache]: Analyzing trace with hash -1892105704, now seen corresponding path program 415 times [2021-05-21 20:01:14,991 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:01:14,991 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1995530892] [2021-05-21 20:01:14,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:01:14,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:01:15,055 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:01:15,055 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:01:15,055 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1995530892] [2021-05-21 20:01:15,055 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1995530892] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:01:15,055 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:01:15,055 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-21 20:01:15,055 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1753474648] [2021-05-21 20:01:15,055 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:01:15,055 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:01:15,055 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:01:15,055 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:01:15,055 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) [2021-05-21 20:01:15,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:01:15,158 INFO L93 Difference]: Finished difference Result 282 states and 659 transitions. [2021-05-21 20:01:15,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:01:15,158 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-05-21 20:01:15,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:01:15,159 INFO L225 Difference]: With dead ends: 282 [2021-05-21 20:01:15,159 INFO L226 Difference]: Without dead ends: 179 [2021-05-21 20:01:15,159 INFO L777 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 [2021-05-21 20:01:15,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2021-05-21 20:01:15,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 179. [2021-05-21 20:01:15,160 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) [2021-05-21 20:01:15,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 411 transitions. [2021-05-21 20:01:15,161 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 411 transitions. Word has length 26 [2021-05-21 20:01:15,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:01:15,161 INFO L482 AbstractCegarLoop]: Abstraction has 179 states and 411 transitions. [2021-05-21 20:01:15,161 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) [2021-05-21 20:01:15,161 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 411 transitions. [2021-05-21 20:01:15,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-21 20:01:15,161 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:01:15,161 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:01:15,161 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable416 [2021-05-21 20:01:15,161 INFO L430 AbstractCegarLoop]: === Iteration 418 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 20:01:15,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:01:15,161 INFO L82 PathProgramCache]: Analyzing trace with hash 493461030, now seen corresponding path program 416 times [2021-05-21 20:01:15,161 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:01:15,161 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1400186329] [2021-05-21 20:01:15,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:01:15,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:01:15,219 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:01:15,219 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:01:15,219 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1400186329] [2021-05-21 20:01:15,219 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1400186329] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:01:15,219 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:01:15,219 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-21 20:01:15,219 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [885389207] [2021-05-21 20:01:15,220 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:01:15,220 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:01:15,220 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:01:15,220 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:01:15,220 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) [2021-05-21 20:01:15,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:01:15,307 INFO L93 Difference]: Finished difference Result 178 states and 410 transitions. [2021-05-21 20:01:15,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:01:15,307 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-05-21 20:01:15,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:01:15,307 INFO L225 Difference]: With dead ends: 178 [2021-05-21 20:01:15,307 INFO L226 Difference]: Without dead ends: 0 [2021-05-21 20:01:15,308 INFO L777 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 [2021-05-21 20:01:15,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-05-21 20:01:15,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-05-21 20:01:15,308 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) [2021-05-21 20:01:15,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-05-21 20:01:15,308 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 26 [2021-05-21 20:01:15,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:01:15,308 INFO L482 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-05-21 20:01:15,308 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:01:15,308 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-05-21 20:01:15,308 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-05-21 20:01:15,308 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable417 [2021-05-21 20:01:15,310 INFO L246 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-05-21 20:01:15,312 INFO L202 PluginConnector]: Adding new model sum_invariant.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.05 08:01:15 BasicIcfg [2021-05-21 20:01:15,312 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-05-21 20:01:15,312 INFO L168 Benchmark]: Toolchain (without parser) took 93721.12 ms. Allocated memory was 381.7 MB in the beginning and 767.6 MB in the end (delta: 385.9 MB). Free memory was 361.2 MB in the beginning and 618.1 MB in the end (delta: -256.9 MB). Peak memory consumption was 128.8 MB. Max. memory is 16.0 GB. [2021-05-21 20:01:15,312 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.12 ms. Allocated memory is still 381.7 MB. Free memory is still 362.2 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-05-21 20:01:15,312 INFO L168 Benchmark]: Boogie Procedure Inliner took 16.39 ms. Allocated memory is still 381.7 MB. Free memory was 361.1 MB in the beginning and 359.6 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-05-21 20:01:15,312 INFO L168 Benchmark]: Boogie Preprocessor took 9.08 ms. Allocated memory is still 381.7 MB. Free memory was 359.6 MB in the beginning and 358.8 MB in the end (delta: 836.6 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-05-21 20:01:15,313 INFO L168 Benchmark]: RCFGBuilder took 163.41 ms. Allocated memory is still 381.7 MB. Free memory was 358.7 MB in the beginning and 349.8 MB in the end (delta: 8.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.0 GB. [2021-05-21 20:01:15,313 INFO L168 Benchmark]: TraceAbstraction took 93527.27 ms. Allocated memory was 381.7 MB in the beginning and 767.6 MB in the end (delta: 385.9 MB). Free memory was 349.4 MB in the beginning and 618.1 MB in the end (delta: -268.7 MB). Peak memory consumption was 116.2 MB. Max. memory is 16.0 GB. [2021-05-21 20:01:15,313 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 0.12 ms. Allocated memory is still 381.7 MB. Free memory is still 362.2 MB. There was no memory consumed. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 16.39 ms. Allocated memory is still 381.7 MB. Free memory was 361.1 MB in the beginning and 359.6 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 9.08 ms. Allocated memory is still 381.7 MB. Free memory was 359.6 MB in the beginning and 358.8 MB in the end (delta: 836.6 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 163.41 ms. Allocated memory is still 381.7 MB. Free memory was 358.7 MB in the beginning and 349.8 MB in the end (delta: 8.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.0 GB. * TraceAbstraction took 93527.27 ms. Allocated memory was 381.7 MB in the beginning and 767.6 MB in the end (delta: 385.9 MB). Free memory was 349.4 MB in the beginning and 618.1 MB in the end (delta: -268.7 MB). Peak memory consumption was 116.2 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 with 1 thread instances CFG has 6 procedures, 42 locations, 5 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 93348.7ms, OverallIterations: 418, TraceHistogramMax: 1, EmptinessCheckTime: 488.6ms, AutomataDifference: 62993.9ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 98.5ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 33617 SDtfs, 21628 SDslu, 185475 SDs, 0 SdLazy, 149233 SolverSat, 3871 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 46100.0ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 3750 GetRequests, 109 SyntacticMatches, 416 SemanticMatches, 3225 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 19372.1ms 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: 5151.1ms AutomataMinimizationTime, 418 MinimizatonAttempts, 33805 StatesRemovedByMinimization, 402 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 110.6ms SsaConstructionTime, 370.6ms SatisfiabilityAnalysisTime, 23050.4ms InterpolantComputationTime, 10868 NumberOfCodeBlocks, 10868 NumberOfCodeBlocksAsserted, 418 NumberOfCheckSat, 10450 ConstructedInterpolants, 0 QuantifiedInterpolants, 87168 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...